Class Ember.PromiseProxyMixin

public
Defined in: packages/ember-runtime/lib/mixins/promise_proxy.js:40
Module: ember

A low level mixin making ObjectProxy promise-aware.

1
2
3
4
5
6
7
8
9
10
11

let ObjectPromiseProxy = Ember.ObjectProxy.extend(Ember.PromiseProxyMixin);

let proxy = ObjectPromiseProxy.create({
  promise: Ember.RSVP.cast($.getJSON('/some/remote/data.json'))
});

proxy.then(function(json){
   // the json
}, function(reason) {
   // the reason why you have no json
});

the proxy has bindable attributes which track the promises life cycle

1
2
3
4

proxy.get('isPending')   //=> true
proxy.get('isSettled')  //=> false
proxy.get('isRejected')  //=> false
proxy.get('isFulfilled') //=> false

When the $.getJSON completes, and the promise is fulfilled with json, the life cycle attributes will update accordingly. Note that $.getJSON doesn't return an ECMA specified promise, it is useful to wrap this with an RSVP.cast so that it behaves as a spec compliant promise.

1
2
3
4

proxy.get('isPending')   //=> false
proxy.get('isSettled')   //=> true
proxy.get('isRejected')  //=> false
proxy.get('isFulfilled') //=> true

As the proxy is an ObjectProxy, and the json now its content, all the json properties will be available directly from the proxy.

1
2
3
4
5
6
7
8
9

// Assuming the following json:
{
  firstName: 'Stefan',
  lastName: 'Penner'
}

// both properties will accessible on the proxy
proxy.get('firstName') //=> 'Stefan'
proxy.get('lastName')  //=> 'Penner'

Show:

isFulfilled public

Module: ember

Defined in packages/ember-runtime/lib/mixins/promise_proxy.js:136

Will become true if the proxied promise is fulfilled.

isPending public

Module: ember

Defined in packages/ember-runtime/lib/mixins/promise_proxy.js:109

Once the proxied promise has settled this will become false.

isRejected public

Module: ember

Defined in packages/ember-runtime/lib/mixins/promise_proxy.js:127

Will become true if the proxied promise is rejected.

isSettled public

Module: ember

Defined in packages/ember-runtime/lib/mixins/promise_proxy.js:118

Once the proxied promise has settled this will become true.

promise public

Module: ember

Defined in packages/ember-runtime/lib/mixins/promise_proxy.js:145

The promise whose fulfillment value is being proxied by this object.

This property must be specified upon creation, and should not be changed once created.

Example:

1
2
3

Ember.ObjectProxy.extend(Ember.PromiseProxyMixin).create({
  promise: <thenable>
});

reason public

Module: ember

Defined in packages/ember-runtime/lib/mixins/promise_proxy.js:99

If the proxied promise is rejected this will contain the reason provided.