Ember CLI - 注入服务 [英] Ember CLI - Injecting a service

问题描述

我使用 Ember CLI(生成蓝图)创建了以下服务和初始化程序:

I created the following service and initializer using Ember CLI (generate blueprint):

// services/session.js
import Ember from 'ember';

export default Ember.Object.extend({
    loggedIn: false,

    ...
});

// initializers/session.js
export default {
  name: 'session',
  initialize: function(container, app) {
    app.inject('route', 'session', 'service:session');
    app.inject('controller', 'session', 'service:session');
  }
};

然而，当试图在路由或控制器中访问它时，会话是未定义的.我错过了一步吗?

However, the session is undefined when attempting to access it in a route or controller. Am I missing a step?

// routes/application.js
import Ember from 'ember';

export default Ember.Route.extend({
    beforeModel: function() {
        var loggedIn = this.session.get('loggedIn'); // undefined
        ...
    }
});

推荐答案

注入的服务是延迟加载的，你必须通过 getter this.get('session') 而不是直接<代码>this.session.

Injected services are lazy loaded, you have to access them via a getter this.get('session') and not directly this.session.

此外，如果您愿意，您可能需要查看 Ember-Simple-Auth重新进行身份验证.

Also, you may want to check out Ember-Simple-Auth if you're doing authentication.

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