Change the value of a select input on the client
Update selecInput widget
updateSelectInput( session, inputId, label = NULL, choices = NULL, selected = NULL )
session |
The session object passed to function given to shinyServer. |
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 (or multiple values if multiple = TRUE). If not specified then defaults to the first value for single-select lists and no values for multiple select lists. |
## Only run examples in interactive R sessions
if (interactive()) {
ui <- semanticPage(
p("The checkbox group controls the select input"),
multiple_checkbox("checkboxes", "Input checkbox",
c("Item A", "Item B", "Item C")),
selectInput("inSelect", "Select input",
c("Item A", "Item B"))
)
server <- function(input, output, session) {
observe({
x <- input$checkboxes
# Can use character(0) to remove all choices
if (is.null(x))
x <- character(0)
# Can also set the label and select items
updateSelectInput(session, "inSelect",
label = paste(input$checkboxes, collapse = ", "),
choices = x,
selected = tail(x, 1)
)
})
}
shinyApp(ui, server)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.