jquery dialog - cannot disable button on open

Question

I want to disable some buttons (with some additional conditions) on jquery dialog show and I am unable to do this. I tried many different ways and none of them worked. I am out of ideas.

Example code attached (in coffeescript):

$('#messages').dialog({
  height: 500,
  width: 800,
  resizable: false,
  modal: true,
  show: 'fade', 
  hide: 'clip',
  buttons: [
      {
      id: "msg-close",
      text: "Close",
      click: ->
        $('#msg-close').prop('disabled', true) //this one works
      }
    ],
  open: ->
    $('#msg-close').prop('disabled', true) //this one doesnt work
});

$('#msg-close').prop('disabled', true) //this one doesnt work

Answer 1

open expects a function like this

open: function () {
    $('#msg-close').prop('disabled', true);
}