Limiting the number of selections in selecInput

[Rishi Agrawal]

Hi,

How can I limit the number of selections that a user can  make in selectInput. I am giving about 14 selections and I want the user to select atmost 2.

[Clifford Long]

Would an indirect way be to use two selection inputs, each using the same list and each allowing only one input?  The second list would not require an input, and could be reactively pruned to remove whatever is selected in the first choice.

There are probably better ways to do this using shiny, but this came to mind as maybe an interim approach.

Best,

Cliff

[Winston Chang]

You can do it with a selectizeInput and the options argument. This allows you to pass arguments to the selectize.js library. Here's an example you can run:

shinyApp(

  ui = bootstrapPage(

    selectizeInput("variable", "Variable:", c("One", "Two", "Three"),

      multiple = TRUE,

      options = list(maxItems = 2))

  ),

  server = function(input, output) { }

)

-Winston

On Fri, Feb 13, 2015 at 6:23 AM, Rishi Agrawal <agrawal...@gmail.com> wrote:

Hi,

How can I limit the number of selections that a user can  make in selectInput. I am giving about 14 selections and I want the user to select atmost 2.

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