我收到此错误消息：
**Uncaught TypeError: Cannot read property 'find' of undefined (13:24:29:797 | error, javascript)**
at (public_html/js/libs/ember-data-latest.js:3771:17)
at App.PostsRoute.Ember.Route.extend.model (public_html/js/app.js:16:25)
at superWrapper (public_html/js/libs/ember-1.0.0-rc.3.js:1044:16)
at Ember.Route.Ember.Object.extend.deserialize (public_html/js/libs/ember-1.0.0-rc.3.js:24232:22)
at Router._paramsForHandler (public_html/js/libs/ember-1.0.0-rc.3.js:23204:34)
at doTransition (public_html/js/libs/ember-1.0.0-rc.3.js:23348:27)
at Router.transitionTo (public_html/js/libs/ember-1.0.0-rc.3.js:23105:9)
at doTransition (public_html/js/libs/ember-1.0.0-rc.3.js:23979:25)
at Ember.Router.Ember.Object.extend.transitionTo (public_html/js/libs/ember-1.0.0-rc.3.js:23842:5)
at Ember.LinkView.Ember.View.extend.click (public_html/js/libs/ember-1.0.0-rc.3.js:24899:29)
at Ember.CoreView.Ember.Object.extend.trigger (public_html/js/libs/ember-1.0.0-rc.3.js:14355:21)
at superWrapper (public_html/js/libs/ember-1.0.0-rc.3.js:1044:16)
at Ember.merge.handleEvent (public_html/js/libs/ember-1.0.0-rc.3.js:16907:19)
at Ember.View.Ember.CoreView.extend.handleEvent (public_html/js/libs/ember-1.0.0-rc.3.js:16393:30)
at (public_html/js/libs/ember-1.0.0-rc.3.js:14113:19)
at (public_html/js/libs/ember-1.0.0-rc.3.js:4504:19)
at Ember.handleErrors (public_html/js/libs/ember-1.0.0-rc.3.js:411:17)
at invoke (public_html/js/libs/ember-1.0.0-rc.3.js:4502:16)
at tryable (public_html/js/libs/ember-1.0.0-rc.3.js:4687:14)
at Ember.tryFinally (public_html/js/libs/ember-1.0.0-rc.3.js:1199:24)
at Ember.run (public_html/js/libs/ember-1.0.0-rc.3.js:4691:16)
at Ember.EventDispatcher.Ember.Object.extend._bubbleEvent (public_html/js/libs/ember-1.0.0-rc.3.js:14112:18)
at (public_html/js/libs/ember-1.0.0-rc.3.js:14058:25)
at Ember.handleErrors (public_html/js/libs/ember-1.0.0-rc.3.js:411:17)
at (public_html/js/libs/ember-1.0.0-rc.3.js:14049:20)
at jQuery.event.dispatch (public_html/js/libs/jquery-1.9.1.js:3074:9)
at elemData.handle (public_html/js/libs/jquery-1.9.1.js:2750:28)
这是我的 app.js：
App = Ember.Application.create();
App.store = DS.Store.extend({
revision: 12,
adapter: 'DS.FixtureAdapter'
});
App.Router.map(function () {
this.resource('posts');
this.resource('about');
});
App.PostsRoute = Ember.Route.extend({
model: function () {
return App.Post.find();
}
});
App.Post = DS.Model.extend({
id: DS.attr('string'),
title: DS.attr('string'),
author: DS.attr('string'),
intro: DS.attr('string'),
extended: DS.attr('string'),
publishedAt: DS.attr('date')
});
App.Post.FIXTURES = [{
id: '1',
title: "this is test post",
author: "Ali",
publishedAt: new Date('12-24-2012'),
intro: " A quick brown fox jumps over the lazy dogs. contains all the English alpabet",
extended: "Their must be some extension for other languages :P :P :P",
}, {
id: '2',
title: "TEST Daily POST",
author: "Naveed",
publishedAt: new Date('03-24-2013'),
intro: " our aims is to touch the new horizons",
extended: "TESTING , TESTING TESTING",
}, {
id: '3',
title: "TEST2 Daily POST",
author: "SAJJAD",
publishedAt: new Date('01-15-2013'),
intro: " Do Nothing, Get Every thing",
extended: "We provide an easy way to connect and do business with your customer. We are here to make your life easy.",
}
];