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!
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