Update Dragula Input

updateDragulaInput(session, inputId, choices = NULL,
  choiceNames = NULL, choiceValues = NULL, badge = TRUE,
  status = "primary")



The session object passed to function given to shinyServer.


The id of the input object.


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). If this argument is provided, then choiceNames and choiceValues must not be provided, and vice-versa. The values should be strings; other types (such as logicals and numbers) will be coerced to strings.

choiceNames, choiceValues

List of names and values, respectively, that are displayed to the user in the app and correspond to the each choice (for this reason, choiceNames and choiceValues must have the same length). If either of these arguments is provided, then the other must be provided and choices must not be provided. The advantage of using both of these over a named list for choices is that choiceNames allows any type of UI object to be passed through (tag objects, icons, HTML code, ...), instead of just simple text.


Displays choices inside a Bootstrap badge.


If choices are displayed into a Bootstrap badge, you can use Bootstrap status to color them, or NULL.


if (interactive()) { library("shiny") library("esquisse") ui <- fluidPage( tags$h2("Update dragulaInput"), radioButtons( inputId = "update", label = "Dataset", choices = c("iris", "mtcars") ), tags$br(), dragulaInput( inputId = "myDad", sourceLabel = "Variables", targetsLabels = c("X", "Y", "fill", "color", "size"), choices = names(iris), replace = TRUE, width = "400px", status = "success" ), verbatimTextOutput(outputId = "result") ) server <- function(input, output, session) { output$result <- renderPrint(str(input$myDad)) observeEvent(input$update, { if (input$update == "iris") { updateDragulaInput( session = session, inputId = "myDad", choices = names(iris), status = "success" ) } else { updateDragulaInput( session = session, inputId = "myDad", choices = names(mtcars) ) } }, ignoreInit = TRUE) } shinyApp(ui, server) }