ember Uncaught TypeError：在存储中加载时，undefined不是函数 [英] ember Uncaught TypeError: undefined is not a function when loading in store
问题描述
我正在使用ember来显示从我的golang服务器收到的数据。新新新旗新新新新新新新旗新新旗新新旗旗新新旗新新旗旗新新旗新新200新新旗新新旗
所以我打开一个websocket，并试图推送在商店收到的消息，但我得到这个错误：
未捕获TypeError：undefined不是一个功能
I'm using ember to display data received from my golang server. The data are in JSON form. so I opened a websocket and tried to push the message received in the store but i got this error: Uncaught TypeError: undefined is not a function
这是我的app.js：
this is my app.js:
App = Ember.Application.create({
LOG_TRANSITIONS: true
})
/******************************* Post Template **************************************/
//Define a route for the template "post"
App.Router.map(function() {
this.route("post", { path: "/post" });
});
//Post Model
App.Post = DS.Model.extend({
name: DS.attr('string' ),
number: DS.attr('string')
});
DS.SocketAdapterMixin = Ember.Mixin.create({
uri: 'ws://localhost:8081/',
init: function(){
this.ws = new WebSocket(this.uri);
// callbacks
this.ws.onopen = function() {
console.log('Connection established /all');
};
this.ws.onclone = function() {
console.log('Connection closed /' + 'all');
};
this.ws.onmessage = function(data) {
this.get('store').load(App.Post, data)
console.log(data);
};
this._super();
},
initialize: function() {
console.log('SocketAdapterMixin::initialize');
this._super();
}
});
DS.SocketAdapter = DS.RESTAdapter.extend(DS.SocketAdapterMixin, {
init: function() {
this._super();
console.log('SocketAdapter');
}
});
App.ApplicationAdapter = DS.SocketAdapter.extend({});
// Use the adapter in the store
App.Store = DS.Store.extend({
revision: 13,
adapter: DS.SocketAdapter.create({})
});
和我的index.html：
and my index.html:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<title>Ember.js Example Application</title>
<script src="js/libs/jquery-1.10.2.js"></script>
<script src="js/libs/handlebars-1.1.2.js"></script>
<script src="js/libs/ember-1.5.1.js"></script>
<script src="js/libs/Ember_Data.js"></script>
<script src="js/app.js"></script>
<script src="js/router.js"></script>
<!-- <script src="js/models/model.js"></script> -->
</head>
<body>
<h1>Bonjour </h1>
<script type="text/x-handlebars">
Hello, {{firstName}} {{lastName}}<br/>
<nav>
{{#link-to 'post'}}Post{{/link-to}}
</nav>
<div>
{{outlet}}
</div>
</script>
<script type="text/x-handlebars" data-template-name="index">
<h2>My Wrappers</h2>
<ul>
{{#each post in model}}
<li>{{post.number}}</li>
{{/each}}
</ul>
</script></p>
<script type="text/x-handlebars" data-template-name="post">
<h2>My Post</h2>
<ul>
<li> Zied</li>
<li> Farah</li>
</ul>
</script>
<script type="text/javascript">
</script>
</head>
<body>
</body>
</html>
我建议问题在this.get（'store'）中，当我打印未定义尝试打印其值。
I suggest that the problem is in this.get('store'), it prints undefined when i try to print its value.
推荐答案
从Ember Data 1.0 beta 1+开始，您不会在Ember Data中定义存储。
You don't define the store in Ember Data since Ember Data 1.0 beta 1+.
App.Store = DS.Store.extend（{
revision：13，
adapter：DS.SocketAdapter .create（{}）
}）;
只需使用这个就足够了：
Just using this will suffice:
App.ApplicationAdapter = DS.SocketAdapter;
商店被传递到 find 功能，如果你想要你可以使用它。此外，您将超出 onmessage 之内的范围，但这不在此。
The store is passed in to the find functions, if you want you can use it then. Additionally you would be out of scope inside of onmessage, but that's beside the point.
由于您的程序是两倍，我建议使用依赖注入创建适配器/传输层。
Since your program is two fold I'd recommend creating your adapters/transport layer using dependency injection. Here's a rough draft
DS.SocketTransport = Ember.Object.extend({
uri: 'ws://localhost:8081/',
type: 'post',
ws: null,
store: null,
init: function(){
var uri = this.get('uri'),
type = this.get('type'),
store = this.get('store'),
ws = new WebSocket(uri);
// callbacks
ws.onopen = function() {
console.log('Connection established /all');
};
ws.onclone = function() {
console.log('Connection closed /' + 'all');
};
ws.onmessage = function(data) {
// if this is random post data, side load
store.load('post', data)
console.log(data);
};
this._super();
}
});
网络套接字适配器
Web Socket Adapter
App.MyWsAdapter = DS.RESTAdapter.extend({
transport: null,
find: function(store, type, id) {
var transport = this.get('transport');
// Do your thing here
return new Ember.RSVP.Promise(function(resolve, reject){
// use the transport here to send a message/get a message, containing
// the json for the type and id mentioned above then use
//resolve(json);
});
},
});
依赖注入
Dependency Injection
App.initializer({
name: "transport",
after:['store'],
initialize: function (container, application) {
var store = container.lookup('store:main'),
postTransport = application.PostTransport.create({store:store, type:'post'});
register("my:postTranspot", postTransport);
application.PostAdapter = App.MyWsAdapter.create({
transport: postTransport
});
}
});
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