consecutive checkboxinput shiny

[auroatle]

Hello.

I need to create a shiny app where only consecutive box can be selected from checkbox Input. It means that, in the code below, If I select "f" then I am able to select just "e" and "g" and so on. Any idea?

library(shiny)
campaigns_list <- letters[1:10]

ui =fluidPage(
  checkboxGroupInput("campaigns","Choose campaign(s):",campaigns_list),
  actionLink("selectall","Select All")
)
server = function(input, output, session) {
 
  observe({
    if(input$selectall == 0) return(NULL)
    else if (input$selectall%%2 == 0)
    {
      updateCheckboxGroupInput(session,"campaigns","Choose campaign(s):",choices=campaigns_list)
    }
    else
    {
      updateCheckboxGroupInput(session,"campaigns","Choose campaign(s):",choices=campaigns_list,selected=campaigns_list)
    }
  })
}
runApp(list(ui = ui, server = server)
)


Thank you very much!

[Joshua Spiewak]

Sounds like a general Shiny question, so forwarding along to the shiny-discuss group.

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