updateRadioButtons
From shiny v0.12.2
by Winston Chang
Change the value of a radio input on the client
Change the value of a radio input on the client
Usage
updateRadioButtons(session, inputId, label = NULL, choices = NULL,
selected = NULL, inline = FALSE)
Arguments
- session
- The
session
object passed to function given toshinyServer
. - inputId
- The id of the input object.
- label
- The label to set for the input object.
- choices
- List of values to select from (if elements of the list are named then that name rather than the value is displayed to the user)
- selected
- The initially selected value (if not specified then defaults to the first value)
- inline
- If
TRUE
, render the choices inline (i.e. horizontally)
Details
The input updater functions send a message to the client, telling it to change the settings of an input object. The messages are collected and sent after all the observers (including outputs) have finished running.
The syntax of these functions is similar to the functions that created the
inputs in the first place. For example, numericInput()
and
updateNumericInput()
take a similar set of arguments.
Any arguments with NULL values will be ignored; they will not result in any changes to the input object on the client.
See Also
Examples
shinyServer(function(input, output, session) {
observe({
# We'll use the input$controller variable multiple times, so save it as x
# for convenience.
x <- input$controller
r_options <- list()
r_options[[sprintf("option label %d 1", x)]] <- sprintf("option-%d-1", x)
r_options[[sprintf("option label %d 2", x)]] <- sprintf("option-%d-2", x)
# Change values for input$inRadio
updateRadioButtons(session, "inRadio", choices = r_options)
# Can also set the label and select an item
updateRadioButtons(session, "inRadio2",
label = paste("Radio label", x),
choices = r_options,
selected = sprintf("option-%d-2", x)
)
})
})
Community examples
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