Return a promise from a controller action in Ember?

Question

I have a component that needs to communicate with a controller and eventually perform some clean up after the controller says everything is ok (ie, jQuery \"un\"-in

Answer 1

send and sendAction are one way streets, that being said, you can send a defer to the action and expect it to resolve/reject it.

var defer = Ember.RSVP.defer();

defer.promise.then(function(resolvedValue){
  alert(resolvedValue); 
});

setTimeout(function(){
  defer.resolve('hello world');
},2000);

Yours would look a bit like this

var defer = Ember.RSVP.defer(),
    self = this;

defer.promise.then(function(){
  self.closeModal();
},
function(){
  alert('error');
});

this.sendAction('save', defer);

save action

actions: {
  save: function(defer){

    // if succeeded 
    defer.resolve();

    // or if failure occurs 
    defer.reject();
  }
}

Be careful, you want to make sure you don't leave out the reject route, you'd hate to have the modal stuck up there because the save failed and there wasn't a failure method.

Sorry I didn't convert to coffee script, I figure you'll either understand or convert and understand and I won't have given you a wrong answer.