renderPlot() (and plotPNG())
now uses ragg::agg_png() by default when the {ragg} package is
installed. To restore the previous behavior, set
options(shiny.useragg = FALSE). (#3654)Closed #1545: insertUI() now executes
<script> tags. (#3630)
fileInput() can set the capture
attribute to facilitates user access to a device’s media capture
mechanism, such as a camera, or microphone, from within a file upload
control (W3C HTML
Media Capture). (Thanks to khaled-alshamaa, #3481)
Closed tidyverse/dplyr#5552: Compatibility of dplyr 1.0 (and
rlang chained errors in general) with req(),
validate(), and friends.
Closed tidyverse/dplyr#6154: Values from an
actionButton() had S3 classes in the incorrect
order.
Closed #3346: Default for ref input in
runGithub() changed from "master" to
"HEAD". (#3564)
Closed #3619: In R 4.2, splitLayout() no longer
raises warnings about incorrect length in an if statement.
(Thanks to @dmenne,
#3625)
Closed #3250:{rlang}/{tidyeval}
conditions (i.e., warnings and errors) are no longer filtered from stack
traces. (#3602)
Closed #3581: Errors in throttled/debounced reactive expressions no longer cause the session to exit. (#3624)
Closed #3657: throttle.ts and the
Throttler typescript objects it provides now function as
intended. (Thanks gto @dvg-p4, #3659)
The auto-reload feature
(options(shiny.autoreload=TRUE)) was not being activated by
devmode(TRUE), despite a console message asserting that it
was. (#3620)
Closed #2297: If an error occurred in parsing a value in a bookmark query string, an error would be thrown and nothing would be restored. Now a message is displayed and that value is ignored. (Thanks to @daattali, #3385)
Restored the previous behavior of automatically guessing the
Content-Type header for downloadHandler
functions when no explicit contentType argument is
supplied. (#3393)
Previously, updating an input value without a corresponding Input
binding element did not trigger a JavaScript
shiny:inputchanged event. Now, if no Input binding element
is found, the shiny:inputchanged event is triggered on
window.document. (#3584)
Closed #2955: Input and output bindings previously attempted to
use el['data-input-id'], but that never worked. They now
use el.getAttribute('data-input-id') instead.
(#3538)
When taking a test snapshot, the sort order of the json keys of
the input, output, and export
fields is currently sorted using the locale of the machine. This can
lead to inconsistent test snapshot results. To opt-in to a consistent
ordering of snapshot fields with {shinytest}, please set
the global option options(shiny.snapshotsortc = TRUE).
{shinytest2} users do not need to set this value.
(#3515)
Closed rstudio/shinytest2#222: When restoring a context (i.e.,
bookmarking) from a URL, Shiny now better handles a trailing
= after _inputs_ and _values_.
(#3648)
Shiny’s internal HTML dependencies are now mounted dynamically instead of statically. (#3537)
HTML dependencies that are sent to dynamic UI now have better
type checking, and no longer require a dep.src.href field.
(#3537)
Closed #3516: Fix regression in repeated calls to
appendTab() when navbarMenu() is already
present within a tabsetPanel()/navbarPage().
(#3518)
Re-arranged conditions for testthat 1.0.0 compatibility. (#3512)
The format and locale arguments to
sliderInput() have been removed. They have been deprecated
since 0.10.2.2 (released on 2014-12-08).
Closed #3403: insertTab()’s position
parameter now defaults to "after" instead of
"before". This has the benefit of allowing us to fix a bug
in positioning when target = NULL, but has the drawback of
changing the default behavior when target is not
NULL. (#3404)
Bootstrap 5 support. (#3410 and rstudio/bslib#304)
bslib::bs_theme(version = 5) to a page layout function with
a theme argument (e.g., fluidPage(),
navbarPage(), etc).Closed #3322, #3313, #1823, #3321, #3320, #1928, and #2310:
Various improvements to navbarPage(),
tabsetPanel(), tabPanel(),
navbarMenu(), etc. Also, these functions are now powered by
the {bslib} package’s new nav() API (consider
using {bslib}’s API to create better looking and more fully
featured navs). (#3388)
All uses of list(...) have been replaced with
rlang::list2(...). This means that you can use trailing
, without error and use rlang’s !!! operator
to “splice” a list of argument values into .... We think
this’ll be particularly useful for passing a list of
tabPanel() to their consumers (i.e.,
tabsetPanel(), navbarPage(), etc). For
example,
tabs <- list(tabPanel("A", "a"), tabPanel("B", "b")); navbarPage(!!!tabs).
(#3315 and #3328)
installExprFunction() and
exprToFunction() are now able to handle quosures when
quoted = TRUE. So render-functions which call
these functions (such as with htmlwidgets) can now
understand quosures. Users can also use rlang::inject() to
unquote a quosure for evaluation. This also means that
render function no longer need env and
quoted parameters; that information can be embedded into a
quosure which is then passed to the render function. Better
documentation was added for how to create render functions.
(#3472)
icon(lib="fontawesome") is now powered by the
{fontawesome} package, which will make it easier to use the
latest FA icons in the future (by updating the
{fontawesome} package). (#3302)
Closed #3397: renderPlot() new uses
ggplot2::get_alt_text() to inform an alt text
default (for {ggplot2} plots). (#3398)
modalDialog() gains support for
size = "xl". (#3410)
Addressed #2521: Updated the list of TCP ports that will be rejected by default in runapp.R, adding 5060, 5061 and 6566. Added documentation describing the port range (3000:8000) and which ports are rejected. (#3456)
Shiny’s core JavaScript code was converted to TypeScript. For the
latest development information, please see the README.md in
./srcts. (#3296)
Switched from digest::digest() to
rlang::hash() for hashing. (#3264)
Switched from internal Stack class to
fastmap::faststack(), and used
fastmap::fastqueue(). (#3176)
Some long-deprecated functions and function parameters were removed. (#3137)
Closed #3345: Shiny now correctly renders
htmltools::htmlDependency()(s) with a list()
of script attributes when used in a dynamic UI context.
This fairly new htmlDependency() feature was added in
{htmltools} v0.5.1. (#3395)
Fixed #2666 and #2670:
nearPoints() and brushedPoints() weren’t
properly account for missing values (#2666 was introduced in v1.4.0).
(#2668)
Closed #3374: quoToFunction() now works correctly
with nested quosures; and as a result, quasi-quotation with rendering
function (e.g., renderPrint(), renderPlot(),
etc) now works as expected with nested quosures. (#3373)
Exported register_devmode_option(). This method was
described in the documentation for devmode() but was never
exported. See ?devmode() for more details on how to
register Shiny Developer options using
register_devmode_option(). (#3364)
Closed #3484: In the RStudio IDE on Mac 11.5, selected checkboxes and radio buttons were not visible. (#3485)
Closed #3286: Updated to Font-Awesome 5.15.2. (#3288)
Updated to jQuery 3.6.0. (#3311)
This release focuses on improvements in three main areas:
theme argument of fluidPage(),
navbarPage(), and bootstrapPage() all now
understand bslib::bs_theme() objects, which can be used to
opt-into Bootstrap 4, use any Bootswatch theme, and/or implement custom
themes without writing any CSS.session object now includes
$setCurrentTheme() and $getCurrentTheme()
methods to dynamically update (or obtain) the page’s theme
after initial load, which is useful for things such as adding
a dark mode switch to an app or some other “real-time” theming tool
like bslib::bs_themer().{bslib}’s
websitereactive() and render*()
(e.g. renderText(), renderTable(), etc)
expressions.bindCache() function can be
used to cache all previous values (as long as they fit in the
cache). This cache may be optionally scoped within and/or across user
sessions, possibly leading to huge performance gains, especially when
deployed at scale across user sessions.help(bindCache, package = "shiny")Closed #3074: Shiny no longer supports file uploads for Internet Explorer 8 or 9. (#3075)
Subtle changes, and some soft-deprecations, have come to
freezeReactiveValue and freezeReactiveVal
(#3055). These functions have been fragile at best in previous releases
(issues #1791, #2463, #2946). In this release, we’ve solved all the
problems we know about with
freezeReactiveValue(input, "x"), by 1) invalidating
input$x and set it to NULL whenever we freeze,
and 2) ensuring that, after a freeze, even if the effect of
renderUI or updateXXXInput is to set
input$x to the same value it already has, this will result
in an invalidation (whereas by default, Shiny filters out such spurious
assignments).
Similar problems may exist when using freezeReactiveVal,
and when using freezeReactiveValue with
non-input reactive values objects. But support for those
was added mostly for symmetry with
freezeReactiveValue(input), and given the above issues,
it’s not clear to us how you could have used these successfully in the
past, or why you would even want to. For this release, we’re
soft-deprecating both of those uses, but we’re more than willing to
un-deprecate if it turns out people are using these; if that includes
you, please join the conversation at
https://github.com/rstudio/shiny/issues/3063. In the meantime, you can
squelch the deprecation messages for these functions specifically, by
setting
options(shiny.deprecation.messages.freeze = FALSE).
Added bootstrap accessibility plugin under the hood to improve accessibility of shiny apps for screen-reader and keyboard users: the enhancements include better navigations for alert, tooltip, popover, modal dialog, dropdown, tab Panel, collapse, and carousel elements. (#2911)
Closed #2987: Improved accessibility of “live regions” – namely,
*Output() bindings and update*Input().
(#3042)
Added appropriate labels to icon() element to
provide screen-reader users with alternative descriptions for the
fontawesome and glyphicon:
aria-label is automatically applied based on the
fontawesome name. For example, icon("calendar") will be
announced as “calendar icon” to screen readers. “presentation” aria role
has also been attached to icon() to remove redundant
semantic info for screen readers. (#2917)
Closed #2929: Fixed keyboard accessibility for file picker
button: keyboard users can now tab to focus on fileInput()
widget. (#2937)
Fixed #2951: screen readers correctly announce labels and date
formats for dateInput() and dateRangeInput()
widgets. (#2978)
Closed #2847: selectInput() is reasonably accessible
for screen readers even when selectize option is set to
TRUE. To improve selectize.js accessibility, we have added
selectize-plugin-a11y
by default. (#2993)
Closed #612: Added alt argument to
renderPlot() and renderCachedPlot() to specify
descriptive texts for plotOutput() objects, which is
essential for screen readers. By default, alt text is set to the static
text, “Plot object,” but even dynamic text can be made with reactive
function. (#3006, thanks @trafficonese and @leonawicz for the
original PR and discussion via #2494)
Added semantic landmarks for mainPanel() and
sidebarPanel() so that assistive technologies can recognize
them as “main” and “complementary” region respectively. (#3009)
Closed #2844: Added lang argument to ui
*Page() functions (e.g., fluidPage,
bootstrapPage) that specifies document-level language
within the app for the accessibility of screen readers and search-engine
parsers. By default, it is set to empty string which is commonly
recognized as a browser’s default locale. (#2920)
Improved accessibility for radioButtons() and
checkboxGroupInput(): All options are now grouped together
semantically for assistive technologies. (thanks @jooyoungseo, #3187).
Added support for Shiny Developer Mode. Developer Mode enables a
number of options() to make a developer’s life easier, like
enabling non-minified JS and printing messages about deprecated
functions and options. See ?devmode() for more details.
(#3174)
New reactiveConsole() makes it easier to
interactively experiment with reactivity at the console
(#2518).
When UI is specified as a function
(e.g. ui <- function(req) { ... }), the response can now
be an HTTP response as returned from the (newly exported)
httpResponse() function. (#2970)
selectInput and selectizeInput now warn
about performance implications when thousands of choices are used, and
recommend server-side
selectize be used instead. (#2959)
Closed #2980: addResourcePath() now allows paths
with a leading . (thanks to @ColinFay). (#2981)
Closed #2972: runExample() now supports the
shiny.port option (thanks to @ColinFay). (#2982)
Closed #2692: downloadButton() icon can now be
changed via the icon parameter (thanks to @ColinFay).
(#3010)
Closed #2984: improved documentation for
renderCachedPlot() (thanks to @aalucaci). (#3016)
reactiveValuesToList() will save its
reactlog label as
reactiveValuesToList(<ID>) vs
as.list(<ID>) (#3017)
Removed unused (and non-exported) cacheContext
class.
testServer() can accept a single server function as
input (#2965).
shinyOptions() now has session-level scoping, in
addition to global and application-level scoping. (#3080)
runApp() now warns when running an application in an
R package directory. (#3114)
Shiny now uses cache_mem from the cachem package,
instead of memoryCache and diskCache.
(#3118)
Closed #3140: Added support for ... argument in
icon(). (#3143)
Closed #629: All update* functions now have a
default value for session, and issue an informative warning
if it is missing. (#3195, #3199)
Improved error messages when reading reactive values outside of a
reactive domain (e.g., reactiveVal()()). (#3007)
Fixed #1942: Calling runApp("app.R") no longer
ignores options passed into shinyApp(). This makes it
possible for Shiny apps to specify what port/host should be used by
default. (#2969)
Fixed #3033: When a DiskCache was created with both
max_n and max_size, too many items could get
pruned when prune() was called. (#3034)
Fixed #2703: Fixed numerous issues with some combinations of
min/value/max causing issues with
date[Range]Input() and
updateDate[Range]Input(). (#3038, #3201)
Fixed #2936: dateYMD was giving a warning when
passed a vector of dates from dateInput which was greater
than length 1. The length check was removed because it was not needed.
(#3061)
Fixed #2266, #2688: radioButtons and
updateRadioButtons now accept character(0) to
indicate that none of the options should be selected (thanks to @ColinFay).
(#3043)
Fixed a bug that textAreaInput() doesn’t work as
expected for relative width (thanks to @shrektan).
(#2049)
Fixed #2859: renderPlot() wasn’t correctly setting
showtext::showtext_opts()’s dpi setting with
the correct resolution on high resolution displays; which means, if the
font was rendered by showtext, font sizes would look smaller than they
should on such displays. (#2941)
Closed #2910, #2909, #1552: sliderInput() warns if
the value is outside of min and
max, and errors if value is NULL
or NA. (#3194)
Removed html5shiv and respond.js, which were used for IE 8 and IE 9 compatibility. (#2973)
Removed es5-shim library, which was internally used within
selectInput() for ECMAScript 5 compatibility.
(#2993)
renderImage() had a
dangerous default of deleteFile = TRUE. (Sorry!) Going
forward, calls to renderImage() will need an explicit
deleteFile argument; for now, failing to provide one will
result in a warning message, and the file will be deleted if it appears
to be within the tempdir(). (#2881)The new shinyAppTemplate() function creates a new
template Shiny application, where components are optional, such as
helper files in an R/ subdirectory, a module, and various kinds of
tests. (#2704)
runTests() is a new function that behaves much like
R CMD check. runTests() invokes all of the top-level R
files in the tests/ directory inside an application, in that
application’s environment. (#2585)
testServer() is a new function for testing reactive
behavior inside server functions and modules. (#2682, #2764, #2807)
The new moduleServer function provides a simpler
interface for creating and using modules. (#2773)
Resolved #2732: markdown() is a new function for
writing Markdown with Github extensions directly in Shiny UIs. Markdown
rendering is performed by the commonmark package.
(#2737)
The getCurrentOutputInfo() function can now return
the background color (bg), foreground color
(fg), accent (i.e., hyperlink) color, and
font information of the output’s HTML container. This
information is reported by plotOutput(),
imageOutput(), and any other output bindings containing a
class of .shiny-report-theme. This feature allows
developers to style an output’s contents based on the container’s CSS
styling. (#2740)
Fixed #2042, #2628: In a dateInput and
dateRangeInput, disabled months and years are now a lighter
gray, to make it easier to see that they are disabled. (#2690)
getCurrentOutputInfo() previously threw an error
when called from outside of an output; now it returns NULL.
(#2707 and #2858)
Added a label to observer that auto-reloads R/
directory to avoid confusion when using reactlog.
(#58)
getDefaultReactiveDomain() can now be called inside
a session$onSessionEnded callback and will return the
calling session information. (#2757)
Added a 'function' class to reactive()
and reactiveVal() objects. (#2793)
Added a new option (type = "hidden") to
tabsetPanel(), making it easier to set the active tab via
other input controls (e.g., radioButtons()) rather than
tabs or pills. Use this option in conjunction with
updateTabsetPanel() and the new
tabsetPanelBody() function (see
help(tabsetPanel) for an example and more details).
(#2814)
Added function updateActionLink() to update an
actionLink() label and/or icon value. (#2811)
Fixed #2856: Bumped jQuery 3 from 3.4.1 to 3.5.1. (#2857)
Fixed #2606: debounce() would not work properly if
the code in the reactive expression threw an error on the first run.
(#2652)
Fixed #2653: The dataTableOutput() could have
incorrect output if certain characters were in the column names.
(#2658)
Minor patch release: fixed some timing-dependent tests failed intermittently on CRAN build machines.
Minor patch release to account for changes to the grid package that will be upcoming in the R 4.0 release (#2776).
options(shiny.jquery.version = 1). If you’ve hard-coded
shared/jquery[.min].js in the HTML of your Shiny app, in
order to downgrade, you’ll have to change that filepath to
shared/legacy/jquery[.min].js.Resolved #1433: plotOutput()’s coordmap info now
includes discrete axis limits for ggplot2 plots. As a
result, any shinytest tests that contain
ggplot2 plots with discrete axes (that were recorded
before this change) will now report differences that can safely be
updated. This new coordmap info was added to correctly infer what data
points are within an input brush and/or near input click/hover in
scenarios where a non-trivial discrete axis scale is involved (e.g.,
whenever scale_[x/y]_discrete(limits = ...) and/or free
scales across multiple discrete axes are used). (#2410)
Resolved #2402: An informative warning is now thrown for
mis-specified (date) strings in dateInput(),
updateDateInput(), dateRangeInput(), and
updateDateRangeInput(). (#2403)
If the shiny.autoload.r option is set to
TRUE, all files ending in .r or
.R contained in a directory named R/ adjacent
to your application are sourced when your app is started. This will
become the default Shiny behavior in a future release (#2547)
Resolved #2442: The shiny:inputchanged JavaScript
event now triggers on the related input element instead of
document. Existing event listeners bound to
document will still detect the event due to event bubbling.
(#2446)
Fixed #1393, #2223: For plots with any interactions enabled, the image is no longer draggable. (#2460)
Resolved #2469: renderText now takes a
sep argument that is passed to cat.
(#2497)
Added resourcePaths() and
removeResourcePaths() functions. (#2459)
Resolved #2433: An informative warning is now thrown if
subdirectories of the app’s www/ directory are masked by
other resource prefixes and/or the same resource prefix is mapped to
different local file paths. (#2434)
Resolved #2478: cmd + shift + f3 and
ctrl + shift + f3 can now be used to add a reactlog mark.
If reactlog keybindings are used and the reactlog is not enabled, an
error page is displayed showing how to enable reactlog recordings.
(#2560)
Partially resolved #2423: Reactivity in Shiny leaked some memory, because R can leak memory whenever a new symbols is interned, which happens whenever a new name/key is used in an environment. R now uses the fastmap package, which avoids this problem. (#2429)
Fixed #2267: Fixed a memory leak with
invalidateLater. (#2555)
Fixed #1548: The reactivePoll function leaked an
observer; that is the observer would continue to exist even if the
reactivePoll object was no longer accessible.
#2522
Fixed #2116: Fixed an issue where dynamic tabs could not be added when on a hosted platform. (#2545)
Resolved #2515: selectInput() and
selectizeInput() now deal appropriately with named factors.
Note that updateSelectInput() and
updateSelectizeInput() do not yet handle
factors; their behavior is unchanged. (#2524, #2540, #2625)
Resolved #2471: Large file uploads to a Windows computer were slow. (#2579)
Fixed #2387: Updating a sliderInput()’s type from
numeric to date no longer changes the rate policy from debounced to
immediate. More generally, updating an input binding with a new type
should (no longer) incorrectly alter the input rate policy.
(#2404)
Fixed #868: If an input is initialized with a NULL
label, it can now be updated with a string. Moreover, if an input label
is initialized with a string, it can now be removed by updating with
label=character(0) (similar to how choices and
selected can be cleared in
updateSelectInput()). (#2406)
Fixed #2250: updateSliderInput() now works with
un-specified (or zero-length) min, max, and
value. (#2416)
Fixed #2396: selectInput("myID", ...) resulting in
an extra myID-selectized input (introduced in v1.2.0).
(#2418)
Fixed #2233: verbatimTextOutput() produced wrapped
text on Safari, but the text should not be wrapped. (#2353)
Fixed #2335: When dateInput()’s value
was unspecified, and max and/or min was set to
Sys.Date(), the value was not being set properly.
(#2526)
Fixed #2591: Providing malformed date-strings to min
or max no longer results in JS errors for
dateInput() and dateRangeInput().
(#2592)
Fixed rstudio/reactlog#36: Changes to reactive values not displaying accurately in reactlog. (#2424)
Fixed #2598: Showcase files don’t appear with a wide window. (#2582)
Fixed #2329, #1817: These bugs were reported as fixed in Shiny
1.3.0 but were not actually fixed because some JavaScript changes were
accidentally not included in the release. The fix resolves issues that
occur when withProgressBar() or bookmarking are combined
with the networkD3
package’s Sankey plot.
Fixed #2385: Static CSS/JS resources in subapps in R Markdown documents did not render properly. (#2386)
Fixed #2280: Shiny applications that used a www/index.html file did not serve up the index file. (#2382)
Revamped Shiny’s reactlog viewer which
debugs reactivity within a shiny application. This allows users to
traverse the reactivity history of a shiny application, filter to the
dependency tree of a selected reactive object, and search for matching
reactive objects. See ?reactlogShow for more details and
how to enable this feature. (#2107)
Shiny now serves static files on a background thread. This means that things like JavaScript and CSS assets can be served without blocking or being blocked by the main R thread, and should result in significantly better performance for heavily loaded servers. (#2280)
Shiny-Shared-Secret security header is now checked
using constant-time comparison to prevent timing attacks (thanks @dirkschumacher!).
(#2319)Fixed #2245: updateSelectizeInput() did not update
labels. (#2248)
Fixed #2308: When restoring a bookmarked application, inputs with
a leading . would not be restored. (#2311)
Fixed #2305, #2322, #2351: When an input in dynamic UI is restored from bookmarks, it would keep getting set to the same value. (#2360)
Fixed #2349, #2329, #1817: These were various bugs triggered by
the presence of the networkD3
package’s Sankey plot in an app. Impacted features included
dateRangeInput, withProgressBar, and
bookmarking (#2359)
renderCachedPlot now supports using
promises for either expr or cacheKeyExpr.
(Shiny v1.2.0 supported async expr, but only if
cacheKeyExpr was async as well; now you can use any
combination of sync/async for expr and
cacheKeyExpr.) #2261This release features plot caching, an important new tool for
improving performance and scalability. Using
renderCachedPlot in place of renderPlot can
greatly improve responsiveness for apps that show the same plot many
times (for example, a dashboard or report where all users view the same
data). Shiny gives you a fair amount of control in where the cache is
stored and how cached plots are invalidated, so be sure to read this
article to get the most out of this feature.
www/index.html to provide your UI and have
hardcoded the old FontAwesome paths into your HTML. If that’s you,
consider switching to HTML
templates, which give you the syntax of raw HTML while still taking
advantage of Shiny’s automatic management of web dependencies.renderCachedPlot(), which stores plots in a cache
so that they can be served up almost instantly. (#1997)Upgrade FontAwesome from 4.7.0 to 5.3.1 and made
icon tags browsable, which means they will display in a web
browser or RStudio viewer by default (#2186). Note that if your
application or library depends on FontAwesome directly using custom CSS,
you may need to make some or all of the changes recommended in Upgrade
from Version 4. Font Awesome icons can also now be used in static R
Markdown documents.
Address #174: Added datesdisabled and
daysofweekdisabled as new parameters to
dateInput(). This resolves #174 and exposes the underlying
arguments of Bootstrap
Datepicker. datesdisabled expects a character vector
with values in yyyy/mm/dd format and
daysofweekdisabled expects an integer vector with day
interger ids (Sunday=0, Saturday=6). The default value for both is
NULL, which leaves all days selectable. Thanks, @nathancday!
(#2147)
Support for selecting variables of a data frame with the output
values to be used within tidy evaluation. Added functions:
varSelectInput, varSelectizeInput,
updateVarSelectInput, updateVarSelectizeInput.
(#2091)
Addressed #2042: dates outside of
min/max date range are now a lighter shade of
grey to highlight the allowed range. (#2087)
Added support for plot interaction when the plot is scaled. (#2125)
Fixed #1933: extended server-side selectize to lists and optgroups. (#2102)
Added namespace support when freezing reactiveValue keys. #2080
Upgrade selectize.js from 0.12.1 to 0.12.4 #2028
Addressed #2079: Added coords_img,
coords_css, and img_css_ratio fields
containing x and y location information for plot brush, hover, and click
events. #2183
Fixed #2033: RStudio Viewer window not closed on
shiny::stopApp(). Thanks, @vnijs! #2047
Fixed #1935: correctly returns plot coordinates when using outer margins. (#2108)
Resolved #2019: updateSliderInput now changes the
slider formatting if the input type changes. (#2099)
Fixed #2138: Inputs that are part of a renderUI were
no longer restoring correctly from bookmarked state. #2139
The knit_print methods from htmltools are no longer
imported into shiny and then exported. Also, shiny’s
knit_print methods are no longer exported. #2166
Fixed #2093: Make sure bookmark scope directory does not exist before trying to create it. #2168
Fixed #2177: The session name is now being recorded when exiting a context. Multiple sessions can now view their respective reactlogs. #2180
Fixed #2162: selectInput was sending spurious
duplicate values to the server when using backspace. Thanks, @sada1993! #2187
Fixed #2142: Dropping files on fileInputs stopped
working on recent releases of Firefox. Thanks @dmenne for reporting! #2203
Fixed #2204: updateDateInput could set the wrong
date on days where DST begins. (Thanks @GaGaMan1101!) #2212
Fixed #2225: Input event queue can stall in apps that use async. #2226
Fixed #2228: reactiveTimer fails when not owned by a
session. Thanks, @P-Bettega! #2229
optgroup documentation to
use list instead of c. (#2084)This is a significant release for Shiny, with a major new feature that was nearly a year in the making: support for asynchronous operations! Until now, R’s single-threaded nature meant that performing long-running calculations or tasks from Shiny would bring your app to a halt for other users of that process. This release of Shiny deeply integrates the promises package to allow you to execute some tasks asynchronously, including as part of reactive expressions and outputs. See the promises documentation to learn more.
extractStackTrace and formatStackTrace are
deprecated and will be removed in a future version of Shiny. As far as
we can tell, nobody has been using these functions, and a refactor has
made them vestigial; if you need this functionality, please file an
issue.Support for asynchronous operations! Built-in render functions
that expected a certain kind of object to be yielded from their
expr, now generally can handle a promise for that kind of
object. Reactive expressions and observers are now promise-aware as
well. (#1932)
Introduced two changes to the (undocumented but widely used)
JavaScript function Shiny.onInputChange(name, value).
First, we changed the function name to Shiny.setInputValue
(but don’t worry–the old function name will continue to work). Second,
until now, all calls to Shiny.onInputChange(inputId, value)
have been “deduplicated”; that is, anytime an input is set to the same
value it already has, the set is ignored. With Shiny v1.1, you can now
add an options object as the third parameter:
Shiny.setInputValue("name", value, {priority: "event"}).
When the priority option is set to "event", Shiny will
always send the value and trigger reactivity, whether it is a duplicate
or not. This closes #928, which was the most upvoted open issue by far!
Thanks, @daattali.
(#2018)
Addressed #1978: shiny:value is now triggered when
duplicate output data is received from the server. (Thanks, @andrewsali!
#1999)
If a shiny output contains a css class of
shiny-report-size, its container height and width are now
reported in session$clientData. So, for an output with an
id with "myID", the height/width can be accessed via
session$clientData[['output_myID_height']]/session$clientData[['output_myID_width']].
Addresses #1980. (Thanks, @cpsievert! #1981)
Added a new autoclose = TRUE parameter to
dateInput() and dateRangeInput(). This closed
#1969 which was a duplicate of much older issue, #173. The default value
is TRUE since that seems to be the common use case.
However, this will cause existing apps with date inputs (that update to
this version of Shiny) to have the datepicker be immediately closed once
a date is selected. For most apps, this is actually desired behavior; if
you wish to keep the datepicker open until the user clicks out of it use
autoclose = FALSE. (#1987)
The version of Shiny is now accessible from Javascript, with
Shiny.version. There is also a new function for comparing
version strings, Shiny.compareVersion(). (#1826,
#1830)
Addressed #1851: Stack traces are now smaller in some places
do.call() is used. (#1856)
Stack traces have been improved, with more aggressive de-noising and support for deep stack traces (stitching together multiple stack traces that are conceptually part of the same async operation).
Addressed #1859: Server-side selectize is now significantly faster. (Thanks to @dselivanov #1861)
#1989: The server side of outputs can now be removed
(e.g. output$plot <- NULL). This is not usually
necessary but it does allow some objects to be garbage collected, which
might matter if you are dynamically creating and destroying many
outputs. (Thanks, @mmuurr! #2011)
Removed the (ridiculously outdated) “experimental feature” tag
from the reference documentation for renderUI.
(#2036)
Addressed #1907: the ignoreInit argument was first
added only to observeEvent. Later, we also added it to
eventReactive, but forgot to update the documentation. Now
done, thanks @flo12392! (#2036)
Fixed #1006: Slider inputs sometimes showed too many digits. (#1956)
Fixed #1958: Slider inputs previously displayed commas after a decimal point. (#1960)
The internal URLdecode() function previously was a
copy of httpuv::decodeURIComponent(), assigned at build
time; now it invokes the httpuv function at run time.
Fixed #1840: with the release of Shiny 1.0.5, we accidently
changed the relative positioning of the icon and the title text in
navbarMenus and tabPanels. This fix reverts
this behavior back (i.e. the icon should be to the left of the text
and/or the downward arrow in case of navbarMenus).
(#1848)
Fixed #1600: URL-encoded bookmarking did not work with sliders that had dates or date-times. (#1961)
Fixed #1962: File dragging and dropping broke in the presence of jQuery version 3.0 as introduced by the rhandsontable htmlwidget. (#2005)
Improved the error handling inside the
addResourcePath() function, to give end users more
informative error messages when the directoryPath argument
cannot be normalized. This is especially useful for
runtime: shiny_prerendered Rmd documents, like
learnr tutorials. (#1968)
Changed script tags in reactlog (inst/www/reactive-graph.html) from HTTP to HTTPS in order to avoid mixed content blocking by most browsers. (Thanks, @jekriske-lilly! #1844)
Addressed #1784: runApp() will avoid port 6697,
which is considered unsafe by Chrome.
Fixed #2000: Implicit calls to xxxOutput not working
inside modules. (Thanks, @GregorDeCillia! #2010)
Fixed #2021: Memory leak with reactiveTimer and
invalidateLater. (#2022)
In some rare cases, interrupting an application (by pressing Ctrl-C
or Esc) may result in the message
Error in execCallbacks(timeoutSecs) : c++ exception (unknown reason).
Although this message sounds alarming, it is harmless, and will go away
in a future version of the later package (more information here).
Fixed #1818: conditionalPanel() expressions that
have a newline character in them caused the application to not work.
(#1820)
Added a safe wrapper function for internal calls to
jsonlite::fromJSON(). (#1822)
Fixed #1824: HTTP HEAD requests on static files caused the application to stop. (#1825)
There are three headlining features in this release of Shiny. It is
now possible to add and remove tabs from a tabPanel; there
is a new function, onStop(), which registers callbacks that
execute when an application exits; and fileInputs now can
have files dragged and dropped on them. In addition to these features,
this release has a number of minor features and bug fixes. See the full
changelog below for more details.
Implemented #1668: dynamic tabs: added functions
(insertTab, appendTab,
prependTab, removeTab, showTab
and hideTab) that allow you to do those actions for an
existing tabsetPanel. (#1794)
Implemented #1213: Added a new function, onStop(),
which can be used to register callback functions that are invoked when
an application exits, or when a user session ends. (Multiple sessions
can be connected to a single running Shiny application.) This is useful
if you have finalization/clean-up code that should be run after the
application exits. (#1770
Implemented #1155: Files can now be drag-and-dropped on
fileInput controls. The appearance of
fileInput controls while files are being dragged can be
modified by overriding the shiny-file-input-active and
shiny-file-input-over classes. (#1782)
Addressed #1688: trigger a new
shiny:outputinvalidated event when an output gets
invalidated, at the same time that the recalculating CSS
class is added. (#1758, thanks @andrewsali!)
Addressed #1508: fileInput now permits the same file
to be uploaded multiple times. (#1719)
Addressed #1501: The fileInput control now retains
uploaded file extensions on the server. This fixes readxl’s
readxl::read_excel and other functions that must recognize
a file’s extension in order to work. (#1706)
For conditionalPanels, Shiny now gives more
informative messages if there are errors evaluating or parsing the
JavaScript conditional expression. (#1727)
Addressed #1586: The conditionalPanel function now
accepts an ns argument. The ns argument can be
used in a module UI
function to scope the condition expression to the module’s
own input and output IDs. (#1735)
With options(shiny.testmode=TRUE), the Shiny process
will send a message to the client in response to a changed input, even
if no outputs have changed. This helps to streamline testing using the
shinytest package. (#1747)
Addressed #1738: The updateTextInput and
updateTextAreaInput functions can now update the
placeholder. (#1742)
Converted examples to single file apps, and made updates and enhancements to comments in the example app scripts. (#1685)
Added new snapshotPreprocessInput() and
snapshotPreprocessOutput() functions, which is used for
preprocessing and input and output values before taking a test snapshot.
(#1760, #1789)
The HTML generated by renderTable() no longer
includes comments with the R version, xtable version, and timestamp.
(#1771)
Added a function isRunning to test whether a Shiny
app is currently running. (#1785)
Added a function setSerializer, which allows authors
to specify a function for serializing the value of a custom input.
(#1791)
Fixed #1546: make it possible (without any hacks) to write
arbitrary data into a module’s session$userData (which is
exactly the same environment as the parent’s
session$userData). To be clear, it allows something like
session$userData$x <- TRUE, but not something like
session$userData <- TRUE (that is not allowed in any
context, whether you’re in the main app, or in a module)
(#1732).
Fixed #1701: There was a partial argument match in the
generateOptions function. (#1702)
Fixed #1710: ReactiveVal objects did not have
separate dependents. (#1712)
Fixed #1438: unbindAll() should not be called when
inserting content with insertUI(). A previous fix (#1449)
did not work correctly. (#1736)
Fixed #1755: dynamic htmlwidgets sent the path of the package on the server to the client. (#1756)
Fixed #1763: Shiny’s private random stream leaked out into the main random stream. (#1768)
Fixed #1680: options(warn=2) was not respected when
running an app. (#1790)
Fixed #1772: ensure that runApp() respects the
shinyApp(onStart = function()) argument. (#1770)
Fixed #1474: A browser() call in an observer could
cause an error in the RStudio IDE on Windows. (#1802)
This is a hotfix release of Shiny. With previous versions of Shiny,
when running an application on the newly-released version of R, 3.4.0,
it would print a message:
Warning in body(fun) : argument is not a function. This has
no effect on the application, but because the message could be alarming
to users, we are releasing a new version of Shiny that fixes this
issue.
Fixed #1672: When an error occurred while uploading a file, the progress bar did not change colors. (#1673)
Fixed #1676: On R 3.4.0, running a Shiny application gave a
warning: Warning in body(fun) : argument is not a function.
(#1677)
This is a hotfix release of Shiny. The primary reason for this release is because the web host for MathJax JavaScript library is scheduled to be shut down in the next few weeks. After it is shut down, Shiny applications that use MathJax will no longer be able to load the MathJax library if they are run with Shiny 1.0.1 and below. (If you don’t know whether your application uses MathJax, it probably does not.) For more information about why the MathJax CDN is shutting down, see https://www.mathjax.org/cdn-shutting-down/.
Added a shiny:sessioninitialized Javascript event,
which is fired at the end of the initialize method of the Session
object. This allows us to listen for this event when we want to get the
value of things like Shiny.user. (#1568)
Fixed #1649: allow the choices argument in
checkboxGroupInput() to be NULL (or
c()) to keep backward compatibility with Shiny < 1.0.1.
This will result in the same thing as providing
choices = character(0). (#1652)
The official URL for accessing MathJax libraries over CDN has been deprecated and will be removed soon. We have switched to a new rstudio.com URL that we will support going forward. (#1664)
This is a maintenance release of Shiny, mostly aimed at fixing bugs
and introducing minor features. The most notable additions in this
version of Shiny are the introduction of the reactiveVal()
function (it’s like reactiveValues(), but it only stores a
single value), and that the choices of radioButtons() and
checkboxGroupInput() can now contain HTML content instead
of just plain text.
radioButtons(),
checkboxGroupInput() and selectInput() (and
the corresponding updateXXX() functions) no longer accept a
selected argument whose value is the name of a choice,
instead of the value of the choice. This feature had been deprecated
since Shiny 0.10 (it printed a warning message, but still tried to match
the name to the right choice) and it’s now completely unsupported.reactiveVal function, for storing a single value
which can be (reactively) read and written. Similar to
reactiveValues, except that reactiveVal just
lets you store a single value instead of storing multiple values by
name. (#1614)Fixed #1637: Outputs stay faded on MS Edge. (#1640)
Addressed #1348 and #1437 by adding two new arguments to
radioButtons() and checkboxGroupInput():
choiceNames (list or vector) and choiceValues
(list or vector). These can be passed in as an alternative to
choices, with the added benefit that the elements in
choiceNames can be arbitrary UI (i.e. anything created by
HTML() and the tags() functions, like icons
and images). While the underlying values for each choice (passed in
through choiceValues) must still be simple text, their
visual representation on the app (what the user actually clicks to
select a different option) can be any valid HTML element. See
?radioButtons for a small example. (#1521)
Updated tools/README.md with more detailed
instructions. (#1616)
Fixed #1565, which meant that resources with spaces in their names return HTTP 404. (#1566)
Exported session$user (if it exists) to the
client-side; it’s accessible in the Shiny object:
Shiny.user. (#1563)
Added support for HTML5’s pushState which allows for
pseudo-navigation in shiny apps. For more info, see the documentation
(?updateQueryString and ?getQueryString).
(#1447)
Fixed #1121: plot interactions with ggplot2 now support
coord_fixed(). (#1525)
Added snapshotExclude function, which marks an
output so that it is not recorded in a test snapshot. (#1559)
Added shiny:filedownload JavaScript event, which is
triggered when a downloadButton or
downloadLink is clicked. Also, the values of
downloadHandlers are not recorded in test snapshots,
because the values change every time the application is run.
(#1559)
Added support for plot interactions with ggplot2 > 2.2.1. (#1578)
Fixed #1577: Improved escapeHTML (util.js) in terms
of the order dependency of replacing, XSS risk attack and performance.
(#1579)
The shiny:inputchanged JavaScript event now includes
two new fields, binding and el, which contain
the input binding and DOM element, respectively. Additionally,
Shiny.onInputChange() now accepts an optional argument,
opts, which can contain the same fields. (#1596)
The NS() function now returns a vectorized function.
(#1613)
Fixed #1617: fileInput can have customized text for
the button and the placeholder. (#1619)
Fixed #1511: fileInputs did not trigger the
shiny:inputchanged event on the client. Also removed
shiny:fileuploaded JavaScript event, because it is no
longer needed after this fix. (#1541, #1570)
Fixed #1472: With a Progress object, calling
set(value=NULL) made the progress bar go to 100%. Now it
does not change the value of the progress bar. The documentation also
incorrectly said that setting the value to
NULL would hide the progress bar. (#1547)
Fixed #162: When a dynamically-generated input changed to a
different inputType, it might be incorrectly deduplicated.
(#1594)
Removed redundant call to inputs.setInput.
(#1595)
Fixed bug where dateRangeInput did not respect
weekstart argument. (#1592)
Fixed #1598: setBookmarkExclude() did not work
properly inside of modules. (#1599)
Fixed #1605: sliders did not move when clicked on the bar area. (#1610)
Fixed #1621: if a reactiveTimer’s session was closed
before the first time that the reactiveTimer fired, then
the reactiveTimer would not get cleared and would keep
firing indefinitely. (#1623)
Fixed #1634: If brushing on a plot causes the plot to redraw, then the redraw could in turn trigger the plot to redraw again and again. This was due to spurious changes in values of floating point numbers. (#1641)
Shiny has reached a milestone: version 1.0.0! In the last year, we’ve added two major features that we considered essential for a 1.0.0 release: bookmarking, and support for testing Shiny applications. As usual, this version of Shiny also includes many minor features and bug fixes.
Here are some highlights from this release. For more details, see the full changelog below.
Shiny now supports automated testing of applications, with the shinytest package. Shinytest has not yet been released on CRAN, but will be soon. (#18, #1464)
Now there’s an official way to slow down reactive values and
expressions that invalidate too quickly. Pass a reactive expression to
the new debounce or throttle function, and get
back a modified reactive expression that doesn’t invalidate as often.
(#1510)
placeholder argument to
verbatimTextOutput(). The default is FALSE,
which means that, if there is no content for this output, no
representation of this slot will be made in the UI. Previsouly, even if
there was no content, you’d see an empty rectangle in the UI that served
as a placeholder. You can set placeholder = TRUE to revert
back to that look. (#1480)Added support for testing Shiny applications with the shinytest package. (#18, #1464)
Added debounce and throttle functions,
to control the rate at which reactive values and expressions invalidate.
(#1510)
Addressed #1486 by adding a new argument to
observeEvent and eventReactive, called
ignoreInit (defaults to FALSE for backwards
compatibility). When set to TRUE, the action (i.e. the
second argument: handlerExpr and valueExpr,
respectively) will not be triggered when the observer/reactive is first
created/initialized. In other words, ignoreInit = TRUE
ensures that the observeEvent (or
eventReactive) is never run right away. For more
info, see the documentation (?observeEvent).
(#1494)
Added a new argument to observeEvent called
once. When set to TRUE, it results in the
observer being destroyed (stop observing) after the first time that
handlerExpr is run (i.e. once = TRUE
guarantees that the observer only runs, at most, once). For more info,
see the documentation (?observeEvent). (#1494)
Addressed #1358: more informative error message when calling
runApp() inside of an app’s app.R (or inside ui.R or
server.R). (#1482)
Added a more descriptive JS warning for insertUI()
when the selector argument does not match anything in DOM.
(#1488)
Added support for injecting JavaScript code when the
shiny.testmode option is set to TRUE. This
makes it possible to record test events interactively. (#1464)
Added ability through arguments to the a tag
function called inside downloadButton() and
downloadLink(). Closes #986. (#1492)
Implemented #1512: added a userData environment to
session, for storing arbitrary session-related variables.
Generally, session-scoped variables are created just by declaring normal
variables that are local to the Shiny server function, but
session$userData may be more convenient for some advanced
scenarios. (#1513)
Relaxed naming requirements for addResourcePath()
(the first character no longer needs to be a letter). (#1529)
Fixed #969: allow navbarPage’s fluid param to
control both containers. (#1481)
Fixed #1438: unbindAll() should not be called when
inserting content with insertUI() (#1449)
Fixed bug causing <meta> tags associated with
HTML dependencies of Shiny R Markdown files to be rendered incorrectly.
(#1463)
Fixed #1359: shinyApp() options argument ignored
when passed to runApp(). (#1483)
Fixed #117: Reactive expressions now release references to cached values as soon as they are invalidated, potentially making those cached values eligible for garbage collection sooner. Previously, this would not occur until the next cached value was calculated and stored. (#1504)
Fixed #1013: flushReact should be called after app
loads. Observers set up outside of server functions were not running
until after the first user connects. (#1503)
Fixed #1453: When using a modal dialog with
easyClose=TRUE in a Shiny gadget, pressing Esc would close
both the modal and the gadget. Now pressing Esc only closes the modal.
(#1523)
This is a maintenance release of Shiny, with some bug fixes and minor new features.
Added a fade argument to modalDialog()
– setting it to FALSE will remove the usual fade-in
animation for that modal window. (#1414)
Fixed a “duplicate binding” error that occurred in some edge
cases involving insertUI and nested uiOutput.
(#1402)
Fixed #1422: When using the shiny.trace option,
allow specifying to only log SEND or RECV messages, or both. (PR
#1428)
Fixed #1419: Allow overriding a JS custom message handler. (PR #1445)
Added exportTestValues() function, which allows a
test driver to query the session for values internal to an application’s
server function. This only has an effect if the
shiny.testmode option is set to TRUE.
(#1436)
Fixed #1427: make sure that modals do not close incorrectly when an element inside them is triggered as hidden. (#1430)
Fixed #1404: stack trace tests were not compatible with the byte-code compiler in R-devel, which now tracks source references.
sliderInputBinding.setValue() now sends a slider’s
value immediately, instead of waiting for the usual 250ms debounce
delay. (#1429)
Fixed a bug where, in versions of R before 3.2, Shiny
applications could crash due to a bug in R’s implementation of
list2env(). (#1446)
This is a maintenance release of Shiny, with some bug fixes and minor new features.
Restored file inputs are now copied on restore, so that the restored application can’t modify the bookmarked file. (#1370)
Added support for plot interaction in the development version of
ggplot2, 2.1.0.9000. Also added support for ggplot2 plots with
coord_flip() (in the development version of ggplot2). (hadley/ggplot2#1781,
#1392)
Fixed #1093 better: updateRadioButtons() and
updateCheckboxGroupInput() were not working correctly if
the choices were given as a numeric vector. This had been solved in
#1291, but that introduced a different bug #1396 that this better fix
avoids. (#1370)
Fixed #1368: If an app with a file input was bookmarked and restored, and then the restored app was bookmarked and restored (without uploading a new file), then it would fail to restore the file the second time. (#1370)
Fixed #1369: sliderInput() did not allow showing
numbers without a thousands separator.
Fixed #1346 and #1107 : jQuery UI’s datepicker conflicted with
the bootstrap-datepicker used by Shiny’s dateInput() and
dateRangeInput(). (#1374)
Updated to bootstrap-datepicker 1.6.4. (#1218, #1374)
Updated to jQuery UI 1.12.1. Previously, Shiny included a build
of 1.11.4 which was missing the datepicker component due to a conflict
with the bootstrap-datepicker used by Shiny’s dateInput()
and dateRangeInput(). (#1374)
A new Shiny release is upon us! There are many new exciting features, bug fixes, and library updates. We’ll just highlight the most important changes here, but you can browse through the full changelog below for details. This will likely be the last release before shiny 1.0, so get out your party hats!
Shiny now supports bookmarkable state: users can save the state of an application and get a URL which will restore the application with that state. There are two types of bookmarking: encoding the state in a URL, and saving the state to the server. With an encoded state, the entire state of the application is contained in the URL’s query string. You can see this in action with this app: https://gallery.shinyapps.io/113-bookmarking-url/. An example of a bookmark URL for this app is https://gallery.shinyapps.io/113-bookmarking-url/?inputs&n=200. When the state is saved to the server, the URL might look something like: https://gallery.shinyapps.io/bookmark-saved/?state_id=d80625dc681e913a (note that this URL is not for an active app).
Important note: > Saved-to-server bookmarking currently works with Shiny Server Open Source. Support on Shiny Server Pro, RStudio Connect, and shinyapps.io is under development and testing. However, URL-encoded bookmarking works on all hosting platforms.
See this article to get started with bookmarkable state. There is also an advanced-level article (for apps that have a complex state), and a modules article that details how to use bookmarking in conjunction with modules.
Shiny can now display notifications on the client browser by using
the showNotification() function. Use this demo app
to play around with the notification API. Here’s a screenshot of a very
simple notification (shown when the button is clicked):
Here’s our article about it, and the reference documentation.
If your Shiny app contains computations that take a long time to complete, a progress bar can improve the user experience by communicating how far along the computation is, and how much is left. Progress bars were added in Shiny 0.10.2. In Shiny 0.14, they were changed to use the notifications system, which gives them a different look.
Important note: > If you were already
using progress bars and had customized them with your own CSS, you can
add the style = "old" argument to your
withProgress() call (or Progress$new()). This
will result in the same appearance as before. You can also call
shinyOptions(progress.style = "old") in your app’s server
function to make all progress indicators use the old styling.
To see new progress bars in action, see this app in the
gallery. You can also learn more about this in our article
and in the reference documentation (either for the easier withProgress
functional API or the more complicated, but more powerful, Progress
object-oriented API.
Shiny can now automatically reconnect to your Shiny session if you temporarily lose network access.
Shiny has now built-in support for displaying modal dialogs like the one below (live app here):
To learn more about this, read our article and the reference documentation.
insertUI and
removeUISometimes in a Shiny app, arbitrary HTML UI may need to be created
on-the-fly in response to user input. The existing uiOutput
and renderUI functions let you continue using reactive
logic to call UI functions and make the results appear in a
predetermined place in the UI. The insertUI and
removeUI functions, which are used in the server code,
allow you to use imperative logic to add and remove arbitrary chunks of
HTML (all independent from one another), as many times as you want,
whenever you want, wherever you want. This option may be more convenient
when you want to, for example, add a new model to your app each time the
user selects a different option (and leave previous models unchanged,
rather than substitute the previous one for the latest one).
See this simple
demo app of how one could use insertUI and
removeUI to insert and remove text elements using a queue.
Also see this other
app that demonstrates how to insert and remove a few common Shiny
input objects. Finally, this app shows
how to dynamically insert modules using insertUI.
For more, read our
article about dynamic UI generation and the reference documentation
about insertUI
and removeUI.
Many Shiny users have asked about best practices for accessing external databases from their Shiny applications. Although database access has long been possible using various database connector packages in R, it can be challenging to use them robustly in the dynamic environment that Shiny provides. So far, it has been mostly up to application authors to find the appropriate database drivers and to discover how to manage the database connections within an application. In order to demystify this process, we wrote a series of articles (first one here) that covers the basics of connecting to an external database, as well as some security precautions to keep in mind (e.g. how to avoid SQL injection attacks).
There are a few packages that you should look at if you’re using a
relational database in a Shiny app: the dplyr and
DBI packages (both featured in the article linked to
above), and the brand new pool package, which provides a
further layer of abstraction to make it easier and safer to use either
DBI or dplyr. pool is not yet on
CRAN. In particular, pool will take care of managing
connections, preventing memory leaks, and ensuring the best performance.
See this pool
basics article and the more
advanced-level article if you’re feeling adventurous! (Both of these
articles contain Shiny app examples that use DBI to connect
to an external MySQL database.) If you are more comfortable with
dplyr than DBI, don’t miss the article about
the integration of
pool and dplyr.
If you’re new to databases in the Shiny world, we recommend using
dplyr and pool if possible. If you need
greater control than dplyr offers (for example, if you need
to modify data in the database or use transactions), then use
DBI and pool. The pool package
was introduced to make your life easier, but in no way constrains you,
so we don’t envision any situation in which you’d be better off
not using it. The only caveat is that pool is not
yet on CRAN, so you may prefer to wait for that.
There are many more minor features, small improvements, and bug fixes than we can cover here, so we’ll just mention a few of the more noteworthy ones (the full changelog, with links to all the relevant issues and pull requests, is right below this section):
Error Sanitization: you now have the option to
sanitize error messages; in other words, the content of the original
error message can be suppressed so that it doesn’t leak any sensitive
information. To sanitize errors everywhere in your app, just add
options(shiny.sanitize.errors = TRUE) somewhere in your
app. Read this
article for more, or play with the demo
app.
Code Diagnostics: if there is an error parsing
ui.R, server.R, app.R, or
global.R, Shiny will search the code for missing commas,
extra commas, and unmatched braces, parens, and brackets, and will print
out messages pointing out those problems. (#1126)
Reactlog visualization: by default, the showReactLog()
function (which brings up the reactive graph) also displays the time
that each reactive and observer were active for:
This new feature can be turned off with
showReactLog(time = FALSE). This may be convenient if you
have a large graph and don’t want to have this new information
cluttering it up. The elapsed time info shows up above each relevant
node’s label, and the time is also coded by color: the slowest reactive
will be dark red and the fastest will be light red.
Additionally, to organize the graph, you can now drag any of the nodes to a specific position and leave it there.
Nicer-looking tables: we’ve made tables
generated with renderTable() look cleaner and more modern.
While this won’t break any older code, the finished look of your table
will be quite a bit different, as the following image shows:
For more, read our short article about this update, experiment with all the new features in this demo app, or check out the reference documentation.
Progress indicators can now either use the new notification API,
using style = "notification" (default), or be displayed
with the previous styling, using style = "old". You can
also call shinyOptions(progress.style = "old") in the
server function to make all progress indicators use the old styling.
Note that if you had customized your progress indicators with additional
CSS, you’ll need to use the old style if you want your UI to look the
same (#1160 and #1329).
Closed #1161: Deprecated the position argument to
tabsetPanel() since Bootstrap 3 stopped supporting this
feature.
The long-deprecated ability to pass a func argument
to many of the render functions has been removed.
Added the ability to bookmark and restore application state. (main PR: #1209)
Added a new notification API. From R, there are new functions
showNotification and hideNotification. From
JavaScript, there is a new Shiny.notification object that
controls notifications. (#1141)
Progress indicators now use the notification API. (#1160)
Added the ability for the client browser to reconnect to a new
session on the server, by setting
session$allowReconnect(TRUE). This requires a version of
Shiny Server that supports reconnections. (#1074)
Added modal dialogs. (#1157)
Added insertUI and removeUI functions to be able to add and remove chunks of UI, standalone, and all independent of one another. (#1174 and #1189)
Improved renderTable() function to make the tables
look prettier and also provide the user with a lot more parameters to
customize their tables with. (#1129)
Added support for the pool package (use Shiny’s
timer/scheduler). (#1226)
Added cancelOutput argument to req().
This causes the currently executing reactive to cancel its execution,
and leave its previous state alone (as opposed to clearing the output).
(#1272)
Display: Showcase now displays the .js, .html and
.css files in the www directory by default. In order to use
showcase mode and not display these, include a new line in your
Description file: IncludeWWW: False. (#1185)
Added an error sanitization option:
options(shiny.sanitize.errors = TRUE). By default, this
option is FALSE. When TRUE, normal errors will
be sanitized, displaying only a generic error message. This changes the
look of an app when errors are printed (but the console log remains the
same). (#1156)
Added the option of passing arguments to an
xxxOutput() function through the corresponding
renderXXX() function via an outputArgs
parameter to the latter. This is only valid for snippets of Shiny code
in an interactive runtime: shiny Rmd document (never for
full apps, even if embedded in an Rmd). (#1443)
Added updateActionButton() function, so the user can
change an actionButton’s (or actionLink’s)
label and/or icon. It also checks that the icon argument (for both
creation and updating of a button) is valid and throws a warning
otherwise. (#1134)
Added code diagnostics: if there is an error parsing ui.R, server.R, app.R, or global.R, Shiny will search the code for missing commas, extra commas, and unmatched braces, parens, and brackets, and will print out messages pointing out those problems. (#1126)
Added support for horizontal dividers in navbarMenu.
(#1147)
Added placeholder option to
passwordInput. (#1152)
Added session$resetBrush(brushId) (R) and
Shiny.resetBrush(brushId) (JS) to programatically clear
brushes from imageOutput/plotOutput.
(#1197)
Added textAreaInput. (thanks, @nuno-agostinho! #1300)
Added session$sendBinaryMessage(type, message)
method for sending custom binary data to the client. See
?session. (thanks, @daef! #1316 and
#1320)
Almost all code examples now have a runnable example with
shinyApp(), so that users can run the examples and see them
in action. (#1158)
When resized, plots are drawn with replayPlot(),
instead of re-executing all plotting code. This results in faster plot
rendering. (#1112)
Exported the isTruthy() function. (part of PR
#1272)
Reactive log now shows elapsed time for reactives and observers. (#1132)
Nodes in the reactlog visualization are now sticky if the user drags them. (#1283)
Fixed #1350: Highlighting of reactives didn’t work in showcase mode.
Fixed #1331: renderPlot() now correctly records and
replays plots when execOnResize = FALSE.
updateDateInput() and
updateDateRangeInput() can now clear the date input fields.
(thanks, @gaborcsardi! #1299, #1315 and
#1317)
Fixed #561: DataTables previously might pop up a warning when the data was updated extremely frequently.
Fixed #776: In some browsers, plots sometimes flickered when updated.
Fixed #543 and #855: When navbarPage() had a
navbarMenu() as the first item, it did not automatically
select an item.
Fixed #970: navbarPage() previously did not have an
option to set the selected tab.
Fixed #1253: Memory could leak when an observer was destroyed without first being invalidated.
Fixed #931: Nested observers could leak memory.
Fixed #1144: updateRadioButton() and
updateCheckboxGroupInput() broke controls when used in
modules (thanks, @sipemu!).
Fixed #1093: updateRadioButtons() and
updateCheckboxGroupInput() didn’t work if
choices was numeric vector.
Fixed #1122: downloadHandler() popped up empty
browser window if the file wasn’t present. It now gives a 404 error
code.
Fixed #1278: Reactive system was being flushed too often (usually this just means a more-expensive no-op than necessary).
Fixed #803 and #1179: handling malformed dates in
dateInput and updateDateInput().
Fixed #1257: updateSelectInput() didn’t work
correctly in IE 11 and Edge.
Fixed #971: runApp() would give confusing error if
port was not numeric.
Shiny now avoids using ports that Chrome deems unsafe. (#1222)
Added workaround for quartz graphics device resolution bug, where resolution is hard-coded to 72 ppi.
Updated to ion.RangeSlider 2.1.2.
Updated to Font Awesome 4.6.3.
Updated to Bootstrap 3.3.7.
Updated to jQuery 1.12.4.
htmlTemplate.flexCol did not work on RStudio for Windows or
Linux.
Fixed RStudio debugger integration.
BREAKING CHANGE: The long-deprecated ability to pass functions (rather than expressions) to reactive() and observe() has finally been removed.
Fixed #962: plot interactions did not work with the development version of ggplot2 (after ggplot2 1.0.1).
Fixed #902: the drag_drop plugin of the selectize
input did not work.
Fixed #933: updateSliderInput() does not work when
only the label is updated.
Multiple imageOutput/plotOutput calls can now share the same brush id. Shiny will ensure that performing a brush operation will clear any other brush with the same id.
Added placeholder option to
textInput.
Improved support for Unicode characters on Windows (#968).
Fixed bug in selectInput and
selectizeInput where values with double quotes were not
properly escaped.
runApp() can now take a path to any .R file that
yields a shinyApp object; previously, the path had to be a
directory that contained an app.R file (or server.R if using separately
defined server and UI). Similarly, introduced
shinyAppFile() function which creates a
shinyApp object for an .R file path, just as
shinyAppDir() does for a directory path.
Introduced Shiny Modules, which are designed to 1) simplify the
reuse of Shiny UI/server logic and 2) make authoring and maintaining
complex Shiny apps much easier. See the article linked from
?callModule.
invalidateLater and reactiveTimer no
longer require an explicit session argument; the default
value uses the current session.
Added session$reload() method, the equivalent of
hitting the browser’s Reload button.
Added shiny.autoreload option, which will
automatically cause browsers to reload whenever Shiny app files change
on disk. This is intended to shorten the feedback cycle when tweaking UI
code.
Errors are now printed with stack traces! This should make it
tremendously easier to track down the causes of errors in Shiny. Try it
by calling stop("message") from within an output, reactive,
or observer. Shiny itself adds a lot of noise to the call stack, so by
default, it attempts to hide all but the relevant levels of the call
stack. You can turn off this behavior by setting
options(shiny.fullstacktrace=TRUE) before or during app
startup.
Fixed #1018: the selected value of a selectize input is guaranteed to be selected in server-side mode.
Added req function, which provides a simple way to
prevent a reactive, observer, or output from executing until all
required inputs and values are available. (Similar functionality has
been available for a while using validate/need, but req provides a much
simpler and more direct interface.)
Improve stability with Shiny Server when many subapps are used, by deferring the loading of subapp iframes until a connection has first been established with the server.
Upgrade to Font Awesome 4.5.0.
Upgraded to Bootstrap 3.3.5.
Upgraded to jQuery 1.12.4
Switched to an almost-complete build of jQuery UI with the exception of the datepicker extension, which conflicts with Shiny’s date picker.
Added fillPage function, an alternative to
fluidPage, fixedPage, etc. that is designed
for apps that fill the entire available page width/height.
Added fillRow and fillCol functions,
for laying out proportional grids in fillPage. For modern
browsers only.
Added runGadget, paneViewer,
dialogViewer, and browserViewer functions to
support Shiny Gadgets. More detailed docs about gadgets coming
soon.
Added support for the new htmltools 0.3 feature
htmlTemplate. It’s now possible to use regular HTML markup
to design your UI, but still use R expressions to define inputs,
outputs, and HTML widgets.
GitHub changed URLs for gists from .tar.gz to .zip, so
runGist was updated to work with the new URLs.
Callbacks from the session object are now guaranteed to execute in the order in which registration occurred.
Minor bugs in sliderInput’s animation behavior have been fixed. (#852)
Updated to ion.rangeSlider to 2.0.12.
Added shiny.minified option, which controls whether
the minified version of shiny.js is used. Setting it to FALSe can be
useful for debugging. (#826, #850)
Fixed an issue for outputting plots from ggplot objects which
also have an additional class whose print method takes precedence over
print.ggplot. (#840, 841)
Added width option to Shiny’s input functions.
(#589, #834)
Added two alias functions of updateTabsetPanel() to
update the selected tab: updateNavbarPage() and
updateNavlistPanel(). (#881)
All non-base functions are now explicitly namespaced, to pass checks in R-devel.
Shiny now correctly handles HTTP HEAD requests. (#876)
Fixed an issue where unbindAll() causes subsequent bindAll() to be ignored for previously bound outputs. (#856)
Undeprecate dataTableOutput and
renderDataTable, which had been deprecated in favor of the
new DT package. The DT package is a bit too new and has a slightly
different API, we were too hasty in deprecating the existing Shiny
functions.
In addition to the changes listed below (in the Full Changelog section), there is an infrastructure change that could affect existing Shiny apps.
In Shiny 0.12.0, we’ve switched from RJSONIO to jsonlite. For the vast majority of users, this will result in no noticeable changes; however, if you use any packages in your Shiny apps which rely on the htmlwidgets, you will also need to update htmlwidgets to 0.4.0. Both of these packages will issue a message when loaded, if the other package needs to be upgraded.
POSIXt objects are now serialized to JSON in UTC8601 format (like
“2015-03-20T20:00:00Z”), instead of as seconds from the epoch. If you
have a Shiny app which uses sendCustomMessage() to send
datetime (POSIXt) objects, then you may need to modify your Javascript
code to receive time data in this format.
Shiny 0.12.0 deprecated Shiny’s dataTableOutput and renderDataTable functions and instructed you to migrate to the nascent DT package instead. (We’ll talk more about DT in a future blog post.) User feedback has indicated this transition was too sudden and abrupt, so we’ve undeprecated these functions in 0.12.1. We’ll continue to support these functions until DT has had more time to mature.
Switched from RJSONIO to jsonlite. This improves consistency and speed when converting between R data structures and JSON. One notable change is that POSIXt objects are now serialized to JSON in UTC8601 format (like “2015-03-20T20:00:00Z”), instead of as seconds from the epoch).
In addition to the existing support for clicking and hovering on plots created by base graphics, added support for double-clicking and brushing. (#769)
Added support for clicking, hovering, double-clicking, and brushing for plots created by ggplot2, including support for facets. (#802)
Added nearPoints and brushedPoints
functions for easily selecting rows of data that are clicked/hovered, or
brushed. (#802)
Added shiny.port option. If this is option is set,
runApp() will listen on this port by default.
(#756)
runUrl, runGist, and
runGitHub now can save downloaded applications, with the
destdir argument. (#688)
Restored ability to set labels for selectInput.
(#741)
Travis continuous integration now uses Travis’s native R support.
Fixed encoding issue when the server receives data from the client browser. (#742)
The session object now has class
ShinySession, making it easier to test whether an object is
indeed a session object. (#720, #746)
Fix JavaScript error when an output appears in nested uiOutputs. (Thanks, Gregory Zhang. #749)
Eliminate delay on receiving new value when
updateSliderInput(value=...) is called.
Updated to DataTables (Javascript library) 1.10.5.
Fixed downloading of files that have no filename extension. (#575, #753)
Fixed bug where nested UI outputs broke outputs. (#749, #750)
Removed unneeded HTML ID attributes for
checkboxGroupInputs and radioButtons.
(#684)
Fixed bug where checkboxes were still active even after
Shiny.unbindAll() was called. (#206)
The server side selectize input will load the first 1000 options by default before users start to type and search in the box. (#823)
renderDataTable() and dataTableOutput() have been deprecated in shiny and will be removed in future versions of shiny. Please use the DT package instead: http://rstudio.github.io/DT/ (#807)
Major client-side performance improvements for pages that have many conditionalPanels, tabPanels, and plotOutputs. (#693, #717, #723)
tabPanels now use the title for
value by default. This fixes a bug in which an icon in the
title caused problems with a conditionalPanel’s test condition. (#725,
#728)
selectInput now has a size argument to
control the height of the input box. (#729)
navbarPage no longer includes a first row of extra
whitespace when header=NULL. (#722)
selectInputs now use Bootstrap styling when
selectize=FALSE. (#724)
Better vertical spacing of label for checkbox groups and radio buttons.
selectInput correctly uses width for both selectize
and non-selectize inputs. (#702)
The wrapper tag generated by htmlOutput and
uiOutput can now be any type of HTML tag, instead of just
span and div. Also, custom classes are now allowed on the tag.
(#704)
Slider problems in IE 11 and Chrome on touchscreen-equipped Windows computers have been fixed. (#700)
Sliders now work correctly with draggable panels. (#711)
Fixed arguments in fixedPanel. (#709)
downloadHandler content callback functions are now invoked with a temp file name that has the same extension as the final filename that will be used by the download. This is to deal with the fact that some file writing functions in R will auto-append the extension for their file type (pdf, zip).
Shiny 0.11 switches away from the Bootstrap 2 web framework to the next version, Bootstrap 3. This is in part because Bootstrap 2 is no longer being developed, and in part because it allows us to tap into the ecosystem of Bootstrap 3 themes.
<img> tags are no
longer automatically scaled to the width of their container. If you use
img() in your UI code, or <img> tags in
your raw HTML source, it’s possible that they will be too large in the
new version of Shiny. To address this you can add the
img-responsive class:```r
img(src = "picture.png", class = "img-responsive")
```
The R code above will generate the following HTML:
```html
<img src="picture.png" class="img-responsive">
```The sliders have been replaced. Previously, Shiny used the jslider library, but now it uses ion.RangeSlider. The new sliders have an updated appearance, and they have allowed us to fix many long-standing interface issues with the sliders.
The sliderInput() function no longer uses the
format or locale options. Instead, you can use
pre, post, and sep options to
control the prefix, postfix, and thousands separator.
updateSliderInput() can now control the min, max,
value, and step size of a slider. Previously, only the value could be
controlled this way, and if you wanted to change other values, you
needed to use Shiny’s dynamic UI.
If in your HTML you are using custom CSS classes that are specific to Bootstrap, you may need to update them for Bootstrap 3. See the Bootstrap migration guide.
If you encounter other migration issues, please let us know on the shiny-discuss mailing list, or on the Shiny issue tracker.
If you would like to use Shiny 0.11 with Bootstrap 2, you can use the shinybootstrap2 package. Installation and usage instructions are on available on the project page. We recommend that you do this only as a temporary solution because future development on Shiny will use Bootstrap 3.
If you want to install a specific version of Shiny other than the
latest CRAN release, you can use the install_version()
function from devtools:
# Install devtools if you don't already have it:
install.package("devtools")
# Install the last version of Shiny prior to 0.11
devtools::install_version("shiny", "0.10.2.2")Along with the release of Shiny 0.11, we’ve packaged up some Bootstrap 3 themes in the shinythemes package. This package makes it easy to use Bootstrap themes with Shiny.
Changed sliders from jquery-slider to ion.rangeSlider. These sliders have an improved appearance, support updating more properties from the server, and can be controlled with keyboard input.
Switched from Bootstrap 2 to Bootstrap 3. For most users, this will work seamlessly, but some users may need to use the shinybootstrap2 package for backward compatibility.
The UI of a Shiny app can now have a body tag. This is useful for CSS templates that use classes on the body tag.
actionButton and actionLink now pass
their ... arguments to the underlying tag function.
(#607)
Added observeEvent and eventReactive
functions for clearer, more concise handling of
actionButton, plot clicks, and other naturally-imperative
inputs.
Errors that happen in reactives no longer prevent any remaining pending observers from executing. It is also now possible for users to control how errors are handled, with the ‘shiny.observer.error’ global option. (#603, #604)
Added an escape argument to
renderDataTable() to escape the HTML entities in the data
table for security reasons. This might break tables from previous
versions of shiny that use raw HTML in the table content, and the old
behavior can be brought back by escape = FALSE if you are
aware of the security implications. (#627)
Changed the URI encoding/decoding functions internally to use
encodeURI(), encodeURIComponent(), and
decodeURIComponent() from the httpuv package instead of
utils::URLencode() and utils::URLdecode().
(#630)
Shiny’s web assets are now minified.
The default reactive domain is now available in event handler functions. (#669)
Password input fields can now be used, with
passwordInput(). (#672)
rstudio::viewer in a code example, for R
CMD check.The minimal version of R required for the shiny package is 3.0.0 now.
Shiny apps can now consist of a single file, app.R, instead of ui.R and server.R.
Upgraded DataTables from 1.9.4 to 1.10.2. This might be a breaking change if you have customized the DataTables options in your apps. (More info: https://github.com/rstudio/shiny/pull/558)
File uploading via fileInput() works for Internet
Explorer 8 and 9 now. Note: IE8/9 do not support multiple files from a
single file input. If you need to upload multiple files, you have to use
one file input for each file.
Switched away from reference classes to R6.
Reactive log performance has been greatly improved.
Added Progress and withProgress, to
display the progress of computation on the client browser.
Fixed #557: updateSelectizeInput(choices, server = TRUE) did not
work when choices is a character vector.
Searching in DataTables is case-insensitive and the search
strings are not treated as regular expressions by default now. If you
want case-sensitive searching or regular expressions, you can use the
configuration options search$caseInsensitive and
search$regex,
e.g. renderDataTable(..., options = list(search = list(caseInsensitve = FALSE, regex = TRUE))).
Added support for htmltools::htmlDependency’s new
attachment parameter to
renderUI/uiOutput.
Exported createWebDependency. It takes an
htmltools::htmlDependency object and makes it available
over Shiny’s built-in web server.
Custom output bindings can now render
htmltools::htmlDependency objects at runtime using
Shiny.renderDependencies().
Fixes to rounding behavior of sliderInput. (#301, #502)
Updated selectize.js to version 0.11.2. (#596)
Added position parameter to
navbarPage.
Added Unicode support for Windows. Shiny apps running on Windows must use the UTF-8 encoding for ui.R and server.R (also the optional global.R) if they contain non-ASCII characters. See this article for details and examples: http://shiny.rstudio.com/gallery/unicode-characters.html (#516)
runGitHub() also allows the ‘username/repo’ syntax
now, which is equivalent to runGitHub('repo', 'username').
(#427)
navbarPage() now accepts a windowTitle
parameter to set the web browser page title to something other than the
title displayed in the navbar.
Added an inline argument to
textOutput(), imageOutput(),
plotOutput(), and htmlOutput(). When
inline = TRUE, these outputs will be put in
span() instead of the default div(). This
occurs automatically when these outputs are created via the inline
expressions (e.g. r renderText(expr)) in R Markdown
documents. See an R Markdown example at
http://shiny.rstudio.com/gallery/inline-output.html (#512)
Added support for option groups in the select/selectize inputs.
When the choices argument for
selectInput()/selectizeInput() is a list of
sub-lists and any sub-list is of length greater than 1, the HTML tag
<optgroup> will be used. See an example at
http://shiny.rstudio.com/gallery/option-groups-for-selectize-input.html
(#542)
BREAKING CHANGE: By default, observers now terminate themselves if they were created during a session and that session ends. See ?domains for more details.
Shiny can now be used in R Markdown v2 documents, to create “Shiny Docs”: reports and presentations that combine narrative, statically computed output, and fully dynamic inputs and outputs. For more info, including examples, see http://rmarkdown.rstudio.com/authoring_shiny.html.
The session object that can be passed into a server
function (e.g. shinyServer(function(input, output, session) {…})) is now
documented: see ?session.
Most inputs can now accept NULL label values to omit
the label altogether.
New actionLink input control; like
actionButton, but with the appearance of a normal
link.
renderPlot now calls print on its
result if it’s visible (i.e. no more explicit print()
required for ggplot2).
Introduced Shiny app objects (see ?shinyApp). These
essentially replace the little-advertised ability for
runApp to take a list(ui=..., server=...) as
the first argument instead of a directory (though that ability remains
for backward compatibility). Unlike those lists, Shiny app objects are
tagged with class shiny.appobj so they can be run simply by
printing them.
Added maskReactiveContext function. It blocks the
current reactive context, to evaluate expressions that shouldn’t use
reactive sources directly. (This should not be commonly
needed.)
Added flowLayout, splitLayout, and
inputPanel functions for putting UI elements side by side.
flowLayout lays out its children in a left-to-right,
top-to-bottom arrangement. splitLayout evenly divides its
horizontal space among its children (or unevenly divides if
cellWidths argument is provided). inputPanel
is like flowPanel, but with a light grey background, and is
intended to be used to encapsulate small input controls wherever
vertical space is at a premium.
Added serverInfo to obtain info about the Shiny
Server if the app is served through it.
Added an inline argument (TRUE/FALSE) in
checkboxGroupInput() and radioButtons() to
allow the horizontal layout (inline = TRUE) of checkboxes or radio
buttons. (Thanks, @saurfang, #481)
sliderInput and
selectizeInput/selectInput now use a standard
horizontal size instead of filling up all available horizontal space.
Pass width="100%" explicitly for the old behavior.
Added the updateSelectizeInput() function to make it
possible to process searching on the server side (i.e. using R), which
can be much faster than the client side processing (i.e. using HTML and
JavaScript). See the article at
http://shiny.rstudio.com/articles/selectize.html for a detailed
introduction.
Fixed a bug of renderDataTable() when the data object only has 1 row and 1 column. (Thanks, ZJ Dai, #429)
renderPrint gained a new argument ‘width’ to control
the width of the text output, e.g. renderPrint({mtcars}, width =
40).
Fixed #220: the zip file for a directory created by some programs may not have the directory name as its first entry, in which case runUrl() can fail. (#220)
runGitHub() can also take a value of the form
“username/repo” in its first argument, e.g. both
runGitHub(“shiny_example”, “rstudio”) and
runGitHub(“rstudio/shiny_example”) are valid ways to run the GitHub
repo.
BREAKING CHANGE: Added a host parameter to runApp()
and runExample(), which defaults to the shiny.host option if it is
non-NULL, or “127.0.0.1” otherwise. This means that by default, Shiny
applications can only be accessed on the same machine from which they
are served. To allow other clients to connect, as in previous versions
of Shiny, use “0.0.0.0” (or the IP address of one of your network
interfaces, if you care to be explicit about it).
Added a new function selectizeInput() to use the
JavaScript library selectize.js
(https://github.com/brianreavis/selectize.js), which extends the basic
select input in many aspects.
The selectInput() function also gained a new
argument selectize = TRUE to makes use of selectize.js by
default. If you want to revert back to the original select input, you
have to call selectInput(…, selectize = FALSE).
Added Showcase mode, which displays the R code for an app right
in the app itself. You can invoke Showcase mode by passing
display.mode="showcase" to the runApp()
function. Or, if an app is designed to run in Showcase mode by default,
add a DESCRIPTION file in the app dir with Title, Author, and License
fields; with “Type: Shiny”; and with “DisplayMode: Showcase”.
Upgraded to Bootstrap 2.3.2 and jQuery 1.11.0.
Make tags$head() and singleton() behave
correctly when used with renderUI() and
uiOutput(). Previously, “hoisting content to the head” and
“only rendering items a single time” were features that worked only when
the page was initially loading, not in dynamic rendering.
Files are now sourced with the keep.source option,
to help with debugging and profiling.
Support user-defined input parsers for data coming in from JavaScript using the parseShinyInput method.
Fixed the bug #299: renderDataTable() can deal with 0-row data frames now. (reported by Harlan Harris)
Added navbarPage() and navbarMenu()
functions to create applications with multiple top level
panels.
Added navlistPanel() function to create layouts with
a bootstrap navlist on the left and tabPanels on the right
Added type parameter to tabsetPanel()
to enable the use of pill style tabs in addition to the standard
ones.
Added position paramter to
tabsetPanel() to enable positioning of tabs above, below,
left, or right of tab content.
Added fluidPage() and fixedPage()
functions as well as related row and column layout functions for
creating arbitrary bootstrap grid layouts.
Added hr() builder function for creating horizontal
rules.
Automatically concatenate duplicate attributes in tag definitions
Added responsive parameter to page building
functions for opting-out of bootstrap responsive css.
Added theme parameter to page building functions for
specifying alternate bootstrap css styles.
Added icon() function for embedding icons from the
font awesome icon library
Added makeReactiveBinding function to turn a
“regular” variable into a reactive one (i.e. reading the variable makes
the current reactive context dependent on it, and setting the variable
is a source of reactivity).
Added a function withMathJax() to include the
MathJax library in an app.
The argument selected in checkboxGroupInput(),
selectInput(), and radioButtons() refers to the value(s) instead of the
name(s) of the argument choices now. For example, the value
of the selected argument in selectInput(…, choices =
c(‘Label 1’ = ‘x1’, ‘Label 2’ = ‘x2’), selected = ‘Label 2’) must be
updated to ‘x2’, although names/labels will be automatically converted
to values internally for backward compatibility. The same change applies
to updateCheckboxGroupInput(), updateSelectInput(), and
updateRadioButtons() as well. (#340)
Now it is possible to only update the value of a checkbox group,
select input, or radio buttons using the selected argument
without providing the choices argument in
updateCheckboxGroupInput(), updateSelectInput(), and
updateRadioButtons(), respectively. (#340)
Added absolutePanel and fixedPanel
functions for creating absolute- and fixed-position panels. They can be
easily made user-draggable by specifying
draggable = TRUE.
For the options argument of the function
renderDataTable(), we can pass literal JavaScript code to
the DataTables library via I(). This makes it possible to
use any JavaScript object in the options, e.g. a JavaScript function
(which is not supported in JSON). See ?renderDataTable for
details and examples.
DataTables also works under IE8 now.
Fixed a bug in DataTables pagination when searching is turned on, which caused failures for matrices as well as empty rows when displaying data frames using renderDataTable().
The options argument in
renderDataTable() can also take a function that returns a
list. This makes it possible to use reactive values in the options.
(#392)
renderDataTable() respects more DataTables options
now: (1) either bPaginate = FALSE or iDisplayLength = -1 will disable
pagination (i.e. all rows are returned from the data); besides, this
means we can also use -1 in the length menu, e.g. aLengthMenu =
list(c(10, 30, -1), list(10, 30, ‘All’)); (2) we can disable searching
for individual columns through the bSearchable option, e.g. aoColumns =
list(list(bSearchable = FALSE), list(bSearchable = TRUE),…) (the search
box for the first column is hidden); (3) we can turn off searching
entirely (for both global searching and individual columns) using the
option bFilter = FALSE.
Added an argument callback in
renderDataTable() so that a custom JavaScript function can
be applied to the DataTable object. This makes it much easier to use
DataTables plug-ins.
For numeric columns in a DataTable, the search boxes support lower and upper bounds now: a search query of the form “lower,upper” (without quotes) indicates the limits [lower, upper]. For a column X, this means the rows corresponding to X >= lower & X <= upper are returned. If we omit either the lower limit or the upper limit, only the other limit will be used, e.g. “,upper” means X <= upper.
updateNumericInput(value) tries to preserve numeric
precision by avoiding scientific notation when possible, e.g. 102145 is
no longer rounded to 1.0214e+05 = 102140. (Thanks, Martin Loos.
#401)
sliderInput() no longer treats a label wrapped in
HTML() as plain text, e.g. the label in sliderInput(…, label =
HTML(‘A Label’)) will not be escaped any more. (#119)
Fixed #306: the trailing slash in a path could fail
addResourcePath() under Windows. (Thanks, ZJ Dai)
Dots are now legal characters for inputId/outputId. (Thanks, Kevin Lindquist. #358)
Debug hooks are registered on all user-provided functions and (reactive) expressions (e.g., in renderPlot()), which makes it possible to set breakpoints in these functions using the latest version of the RStudio IDE, and the RStudio visual debugging tools can be used to debug Shiny apps. Internally, the registration is done via installExprFunction(), which is a new function introduced in this version to replace exprToFunction() so that the registration can be automatically done.
Added a new function renderDataTable() to display tables using the JavaScript library DataTables. It includes basic features like pagination, searching (global search or search by individual columns), sorting (by single or multiple columns). All these features are implemented on the R side; for example, we can use R regular expressions for searching. Besides, it also uses the Bootstrap CSS style. See the full documentation and examples in the tutorial: http://rstudio.github.io/shiny/tutorial/#datatables
Added a new option shiny.error which can take a
function as an error handler. It is called when an error occurs in an
app (in user-provided code), e.g., after we set options(shiny.error =
recover), we can enter a specified environment in the call stack to
debug our code after an error occurs.
The argument launch.browser in runApp() can also be
a function, which takes the URL of the shiny app as its input
value.
runApp() uses a random port between 3000 and 8000 instead of 8100 now. It will try up to 20 ports in case certain ports are not available.
Fixed a bug for conditional panels: the value
input.id in the condition was not correctly retrieved when
the input widget had a type, such as numericInput(). (reported by Jason
Bryer)
Fixed two bugs in plotOutput(); clickId and hoverId did not give correct coordinates in Firefox, or when the axis limits of the plot were changed. (reported by Chris Warth and Greg D)
The minimal required version for the httpuv package was increased to 1.2 (on CRAN now).
Stopped sending websocket subprotocol. This fixes a compatibility issue with Google Chrome 30.
The input and output objects are now
also accessible via session$input and
session$output.
Added click and hover events for static plots; see
?plotOutput for details.
Added optional logging of the execution states of a reactive
program, and tools for visualizing the log data. To use, start a new R
session and call options(shiny.reactlog=TRUE). Then launch
a Shiny app and interact with it. Press Ctrl+F3 (or for Mac, Cmd+F3) in
the browser to launch an interactive visualization of the reactivity
that has occurred. See ?showReactLog for more
information.
Added includeScript() and includeCSS()
functions.
Reactive expressions now have class=“reactive” attribute. Also
added is.reactive() and is.reactivevalues()
functions.
New stopApp() function, which stops an app and
returns a value to the caller of runApp().
Added the shiny.usecairo option, which can be used
to tell Shiny not to use Cairo for PNG output even when it is installed.
(Defaults to TRUE.)
Speed increases for selectInput() and
radioButtons(), and their corresponding updater functions,
for when they have many options.
Added tagSetChildren() and
tagAppendChildren() functions.
The HTTP request object that created the websocket is now
accessible from the session object, as
session$request. This is a Rook-like request environment
that can be used to access HTTP headers, among other things. (Note: When
running in a Shiny Server environment, the request will reflect the
proxy HTTP request that was made from the Shiny Server process to the R
process, not the request that was made from the web browser to Shiny
Server.)
Fix getComputedStyle issue, for IE8 browser
compatibility (#196). Note: Shiny Server is still required for IE8/9
compatibility.
Add shiny.sharedSecret option, to require the HTTP header Shiny-Shared-Secret to be set to the given value.
tabsetPanel() can be directed to start with a
specific tab selected.
Fix bug where multiple file uploads with 3 or more files result in incorrect data.
Add withTags() function.
Add dateInput and dateRangeInput.
shinyServer() now takes an optional
session argument, which is used for communication with the
session object.
Add functions to update values of existing inputs on a page, instead of replacing them entirely.
Allow listening on domain sockets.
Added actionButton() to Shiny.
The server can now send custom JSON messages to the client. On the client side, functions can be registered to handle these messages.
Callbacks can be registered to be called at the end of a client session.
Add ability to set priority of observers and outputs. Each priority level gets its own queue.
Fix bug where the presence of a submit button would prevent sending of metadata until the button was clicked.
reactiveTimer() and invalidateLater()
by default no longer invalidate reactive objects after the client
session has closed.
Shiny apps can be run without a server.r and ui.r file.
Switch from websockets package for handling websocket connections to httpuv.
New method for detecting hidden output objects. Instead of checking that height and width are 0, it checks that the object or any ancestor in the DOM has style display:none.
Add clientData reactive values object, which carries
information about the client. This includes the hidden status of output
objects, height/width plot output objects, and the URL of the
browser.
Add parseQueryString() function.
Add renderImage() function for sending arbitrary
image files to the client, and its counterpart,
imageOutput().
Add support for high-resolution (Retina) displays.
Fix bug #55, where renderTable() would throw error
with an empty data frame.
Fix bug where width and height weren’t passed along properly from
reactivePlot to renderPlot.
Fix bug where infinite recursion would happen when
reactivePlot was passed a function for width or
height.
Added suspend/resume capability to observers.
Output objects are automatically suspended when they are hidden on the user’s web browser.
runGist() accepts GitHub’s new URL format, which
includes the username.
reactive() and observe() now take
expressions instead of functions.
reactiveText(), reactivePlot(), and so
on, have been renamed to renderText(),
renderPlot(), etc. They also now take expressions instead
of functions.
Fixed a bug where empty values in a numericInput were sent to the R process as 0. They are now sent as NA.
Fix issue #91: bug where downloading files did not work.
Add [[<- operator for shinyoutput object, making it possible
to assign values with output[['plot1']] <- ....
Reactive functions now preserve the visible/invisible state of their returned values.
Reactive functions are now evaluated lazily.
Add reactiveValues().
Using as.list() to convert a reactivevalues object
(like input) to a list is deprecated. The new function
reactiveValuesToList() should be used instead.
Add isolate(). This function is used for accessing
reactive functions, without them invalidating their parent
contexts.
Fix issue #58: bug where reactive functions are not re-run when all items in a checkboxGroup are unchecked.
Fix issue #71, where reactiveTable() would return
blank if the first element of a data frame was NA.
In plotOutput, better validation for CSS units when
specifying width and height.
reactivePrint() no longer displays invisible
output.
reactiveText() no longer displays printed output,
only the return value from a function.
The runGitHub() and runUrl() functions
have been added, for running Shiny apps from GitHub repositories and
zip/tar files at remote URLs.
Fix issue #64, where pressing Enter in a textbox would cause a form to submit.
runGist has been updated to use the new download
URLs from https://gist.github.com.
Shiny now uses CairoPNG() for output, when the Cairo
package is available. This provides better-looking output on Linux and
Windows.
downloadHandler: The
content function now takes a file path, not writable
connection, as an argument. This makes it much easier to work with APIs
that only write to file paths, not connections.Fix problems with runGist on Windows
Add feature for on-the-fly file downloads (e.g. CSV data, PDFs)
Add CSS hooks for app-wide busy indicators
Fix input binding with IE8 on Shiny Server
Fix issue #41: reactiveTable should allow print options too
Allow dynamic sizing of reactivePlot (i.e. using a function instead of a fixed value)
Support more MIME types when serving out of www
Fix issue #35: Allow modification of untar args
headerPanel can take an explicit window title parameter
checkboxInput uses correct attribute checked instead
of selected
Fix plot rendering with IE8 on Shiny Server
Much less flicker when updating plots
More customizable error display
Add includeText, includeHTML, and
includeMarkdown functions for putting text, HTML, and
Markdown content from external files in the application’s UI.
Add runGist function for conveniently running a
Shiny app that is published on gist.github.com.
Fix issue #27: Warnings cause reactive functions to stop executing.
The server.R and ui.R filenames are now case insensitive.
Add wellPanel function for creating inset areas on
the page.
Add bootstrapPage function for creating new
Bootstrap based layouts from scratch.
Fix issue #26: Shiny.OutputBindings not correctly exported.
Add repeatable function for making easily repeatable
versions of random number generating functions.
Transcode JSON into UTF-8 (prevents non-ASCII reactivePrint values from causing errors on Windows).
Import package dependencies, instead of attaching them (with the exception of websockets, which doesn’t currently work unless attached).
conditionalPanel was animated, now it is not.
bindAll was not correctly sending initial values to the server; fixed.
BREAKING CHANGE: JS APIs Shiny.bindInput and Shiny.bindOutput removed and replaced with Shiny.bindAll; Shiny.unbindInput and Shiny.unbindOutput removed and replaced with Shiny.unbindAll.
Add file upload support (currently only works with Chrome and
Firefox). Use a normal HTML file input, or call the
fileInput UI function.
Shiny.unbindOutputs did not work, now it does.
Generally improved robustness of dynamic input/output bindings.
Add conditionalPanel UI function to allow showing/hiding UI based
on a JS expression; for example, whether an input is a particular value.
Also works in raw HTML (add the data-display-if attribute
to the element that should be shown/hidden).
htmlOutput (CSS class shiny-html-output) can contain
inputs and outputs.
Allow Bootstrap tabsets to act as reactive inputs; their value indicates which tab is active
Upgrade to Bootstrap 2.1
Add checkboxGroupInput control, which presents a
list of checkboxes and returns a vector of the selected values
Add addResourcePath, intended for reusable component
authors to access CSS, JavaScript, image files, etc. from their package
directories
Add Shiny.bindInputs(scope), .unbindInputs(scope), .bindOutputs(scope), and .unbindOutputs(scope) JS API calls to allow dynamic binding/unbinding of HTML elements
Introduce Shiny.inputBindings.register JS API and InputBinding class, for creating custom input controls
Add step parameter to numericInput
Read names of input using names(input)
Access snapshot of input as a list using
as.list(input)
Fix issue #10: Plots in tabsets not rendered