Using JS Promises in moveEnd

[Grant]

Hi, 

How can I get the moveEnd to wait until a promise is resolved before ending completing?

Currently I have the following:

moveEnd: function(e) {

  if (!isEventValid(e.start, e.end)) {

    e.preventDefault();

    return false;

  }

 

  $.when(getAssistance(e.event, e.start, e.end))

    .done(function() {

      window.location = "/new-url";

    }).

    fail(function() {

      // 1

      e.preventDefault();

      return false;

    });

}

 

(I dont know how to get out of this editor)

My problem is that the 'moveEnd' completes before the promise is complete. If the Promise resolved and the user redirected, its a non-issue, but if the promise is rejected, the move needs to be prevented.

Please advise, Thanks,
Grant


[Veselin Tsvetanov]

Hi Grant,

I am afraid that you won't be able to wait until the promise has been resolved to determine whether the moveEnd event should be prevented or not. That is why I would suggest you a different approach. If the promise fails, instead of using the preventDefault() call you could directly re-set the event start and end dates. To do that you should handle the moveEnd event in the following way:

moveEnd: function(e) {
  var initialStart = e.event.start;
  var initialEnd = e.event.end;
  var event = e.event;

  $.when(getAssistance(e.event, e.start, e.end))
    .done(function() {
    window.location = "/new-url";
  }).
  fail(function() {
    // 1
    event.set('start', initialStart);
    event.set('end', initialEnd);
    return false;
  });
}

 
Regards,
Veselin Tsvetanov
Progress Telerik

[Grant]

Thanks Veselin,

Worked great.

Regards,
Grant