CODEWITHSUNDEEP
rshiny
Hazem HASAN
Hazem HASAN

Reputation: 1658

change data for next input dynamically

i have two select input in my UI.R library(shiny)

ContextElements = c("choice1", "choice2", "choice3")
shinyUI(pageWithSidebar(

headerPanel(""),

sidebarPanel(
  h4("test for selectize input"),

 selectizeInput(inputId = "firstAxe", label = h4("First Axe"),  
               choices=ContextElements, selected = NULL, multiple = FALSE,
               options = NULL),
 hr(),

 selectizeInput(inputId = "twoAxe", label = h4("Second Axe"),  
               choices=NULL, selected = NULL, multiple = FALSE,
               options = NULL)
),
mainPanel(
  )
))

i want that the next selectizeinput choices ("twoAxe") to be filled dynamically with the remained choices drom the first one, that's mean if i choosed the first choice if the first one, the second choices will be choice2 and choice3

Thanks

Upvotes: 0

Views: 309

Answers (1)

John Paul
John Paul

Reputation: 12684

You can do this in server.r using updateSelectizeInput . Lets assume that ContextElements is available to the server - either defined in global.r or in both server.r and ui.r. Then this should work:

observe({

    input$firstAxe   # makes the second selectize change when the first one does

    updateSelectizeInput({session, inputId="twoAxe",
         choices=as.list( ContextElements[!ContextElements %in% input$firstAxe] )  })
})

As you change you choice in firstAxe you should see the choices in twoAxe respond.

Upvotes: 0

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