# sendAction as a promise

**URL:** https://discuss.emberjs.com/t/sendaction-as-a-promise/3143
**Category:** Design
**Created:** [October 28, 2013, 10:17am UTC](https://discuss.emberjs.com/t/sendaction-as-a-promise/3143 "2013-10-28T10:17:17Z")
**Posts on this page:** 1
**Showing post:** 5

<div class="post-metadata">

### Author: ![tarasm](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/tarasm/32/15980_2.png) [@tarasm](https://discuss.emberjs.com/u/tarasm)
#### Post date: [February 18, 2014, 1:38pm UTC](https://discuss.emberjs.com/t/sendaction-as-a-promise/3143/5 "2014-02-18T13:38:22Z")

</div>

@seif I’ve been thinking about something very similar lately. I spoke to @machty about it and he pointed me to a computed property that he’s been using.

```javascript
// A PromiseAction is an action set on the controller,
// but not in the actions hash, which allows it to be
// passed in directly to the component. The component
// just sees it as a function that it can call that
// returns a promise. This is nice for when the component
// needs to emit some action that can fail; if it fails
// it can clean up after itself.
 
// Example:
// export default Controller.extend({
// setSomeValueAsyncly: promiseAction(function(newValue) {
// this.set('something', newValue);
// // simulate a slow set...
// return new Ember.RSVP.Promise(function(resolve) {
// Ember.run.later(resolve, 1000);
// });
// })
// });
//
// {{some-component on-change=setSomeValueAsyncly}}
 
export default function promiseActionComputedProperty(fn) {
  return Ember.computed(function() {
    var self = this;
    return function() {
      var args = arguments;
      return new Ember.RSVP.Promise(function(resolve) {
        resolve(fn.apply(self, args));
      });
    };
  });
};

```

I’m looking at how I can use it myself but I just wanted to share.

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