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70 lines
2.1 KiB
R
70 lines
2.1 KiB
R
% Generated by roxygen2 (4.0.2): do not edit by hand
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\name{updateRadioButtons}
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\alias{updateRadioButtons}
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\title{Change the value of a radio input on the client}
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\usage{
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updateRadioButtons(session, inputId, label = NULL, choices = NULL,
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selected = NULL, inline = FALSE)
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}
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\arguments{
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\item{session}{The \code{session} object passed to function given to
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\code{shinyServer}.}
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\item{inputId}{The id of the input object.}
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\item{label}{The label to set for the input object.}
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\item{choices}{List of values to select from (if elements of the list are
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named then that name rather than the value is displayed to the user)}
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\item{selected}{The initially selected value (if not specified then
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defaults to the first value)}
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\item{inline}{If \code{TRUE}, render the choices inline (i.e. horizontally)}
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}
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\description{
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Change the value of a radio input on the client
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}
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\details{
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The input updater functions send a message to the client, telling it to
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change the settings of an input object. The messages are collected and sent
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after all the observers (including outputs) have finished running.
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The syntax of these functions is similar to the functions that created the
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inputs in the first place. For example, \code{\link{numericInput}()} and
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\code{updateNumericInput()} take a similar set of arguments.
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Any arguments with NULL values will be ignored; they will not result in any
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changes to the input object on the client.
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}
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\examples{
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\dontrun{
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shinyServer(function(input, output, session) {
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observe({
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# We'll use the input$controller variable multiple times, so save it as x
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# for convenience.
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x <- input$controller
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r_options <- list()
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r_options[[sprintf("option label \%d 1", x)]] <- sprintf("option-\%d-1", x)
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r_options[[sprintf("option label \%d 2", x)]] <- sprintf("option-\%d-2", x)
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# Change values for input$inRadio
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updateRadioButtons(session, "inRadio", choices = r_options)
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# Can also set the label and select an item
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updateRadioButtons(session, "inRadio2",
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label = paste("Radio label", x),
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choices = r_options,
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selected = sprintf("option-\%d-2", x)
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)
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})
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})
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}
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}
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\seealso{
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\code{\link{radioButtons}}
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}
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