Ember 延迟控制器，直到身份验证完成

Question

我有一种情况，我需要获取会话的一些属性，但是我还没有找到成功的解决方案，可以在成功登录后延迟加载路由。

这就是交易 - 当用户登录时，他们会被发送到电话号码路由。应用程序控制器上的 this.get('session.currentUser') 尚未设置。

当我去不同的路线然后回来时，它设置正确。如果登录后我在电话号码路由上然后刷新页面，则电话号码会正确加载，因为初始化程序中的 deferReadiness 和 advanceReadiness 。我无法在登录之前延迟Readiness，因为该应用已经加载并准备就绪。

唯一缺少的部分是用户登录后，它应该加载routes/phone-numbers.js 中的数字，这是粘贴在下面的最后一段代码。但是，myStoreId 未加载，因为尚未设置 session.currentUser。

我已经尝试了很多方法来让它发挥作用，并且正在寻找关于最后一部分的一些想法。它是如此接近工作，但只是缺少一小部分。

// initializers/current-user.js
import Ember from 'ember';
import Session from 'simple-auth/session';

export default {
  name: 'current-user',
  before: 'simple-auth',

  initialize: function(container, application) {
    Session.reopen({
      setCurrentUser: function() {
        let appController = container.lookup("controller:application");

        // don't know how to check if the app is already ready
        try{
          application.deferReadiness();
          console.log('deferred');
        }catch(e){}

        if(this.get('isAuthenticated')) {
          console.log('running the isAuthenticated obs');

          let store = container.lookup('store:main');
          let _this = this;

          return store.find('user', 'me').then((user) => {
            // set the current user to be used on the session object
            this.set('currentUser', user);
          }).then(function(){
            // set the store for the current user
            store.find('store', {user: _this.get('currentUser.id')}).then(function(data) {
              _this.set('myStore', data.get('firstObject'));
              application.advanceReadiness();
            });
          })
        }
      }.observes('isAuthenticated')
    });
  }
};

// controllers/application.js
export default Ember.Controller.extend({
  myStore: Ember.computed(function(){
    // return the store object that is associated with the current user
    if(this.get('session.isAuthenticated')){
      if(this.get('session.myStore')){
        return this.get('session.myStore');
      }else{
        console.log(this.get('session.currentUser'));
        // this is where the problem is. The session.currentUser is not populated yet.

        this.get('store').find('store', {user: this.get('session.currentUser.id')}).then(function(data) {
          this.get('session').set('myStore', data.get('firstObject'));
          return this.get('session.myStore');
        });
      }
    }
  }),
});


// routes/phone-numbers.js
export default Ember.Route.extend({
  setupController: function(controller, model){
    this._super(controller, model);
    let myStoreId = this.controllerFor('application').get('myStore.id');

    if(!myStoreId){
      console.log(this.get('session.currentUser'));
      // there is no currentUser set on the session after login
    }else{
      this.store.find('store-phone-number', {'store': myStoreId}).then(function(numbers){
        controller.set('numbers', numbers);
      });
    }
  },
});

Answer 1

尝试使用 Promises：

// controllers/application.js
export default Ember.Controller.extend({
  myStore: Ember.computed('session.currentUser', function(){
    // return the store object that is associated with the current user
    return new Ember.RSVP.Promise(resolve => {
      if(this.get('session.isAuthenticated')){
        if(this.get('session.myStore')){
          resolve(this.get('session.myStore'));
        } else {
          console.log(this.get('session.currentUser'));
          // this is where the problem is. The session.currentUser is not populated yet.

          this.get('store').find('store', {user: this.get('session.currentUser.id')}).then(function(data) {
            this.get('session').set('myStore', data.get('firstObject'));
            resolve(this.get('session.myStore'));
          });
        }
      }
    });
  })
});


// routes/phone-numbers.js
export default Ember.Route.extend({
  setupController: function(controller, model){
    this._super(controller, model);
    let myStoreId = this.controllerFor('application').get('myStore').then(myStore => {
      let myStoreId = myStore.get('id');
      if(!myStoreId){
        console.log(this.get('session.currentUser'));
        // there is no currentUser set on the session after login
      } else {
        this.store.find('store-phone-number', {'store': myStoreId}).then(function(numbers){
          controller.set('numbers', numbers);
        });
      }
    });
  }
});

Answer 2

Daniel 提出的玩弄承诺的建议让我找到了解决方案。本质上，如果 myStore 尚未设置，我需要返回一个承诺，并且还必须在登录后的第一条路由中考虑这一点。

export default Ember.Controller.extend({
  myStore: Ember.computed(function(){
    // return the store object that is associated with the current user
    if(this.get('session.isAuthenticated')){
      if(this.get('session.myStore')){
        return this.get('session.myStore');
      }else{
        return new Promise(resolve =>{
          this.get('session').setCurrentUser().then(data => {
            this.get('store').find('store', {user: this.get('session.currentUser.id')}).then(data => {
              this.get('session').set('myStore', data.get('firstObject'));
              resolve(this.get('session.myStore'));
            });
          });
        })
      }
    }
  }),
});

export default Ember.Route.extend({
  setNumbers: function(controller, id){
    this.store.find('store-phone-number', {'store': id}).then(numbers => {
      controller.set('numbers', numbers);
    });
  },
  setupController: function(controller, model){
    this._super(controller, model);

    if(this.controllerFor('application').get('myStore.id')){
      let myStoreId = this.controllerFor('application').get('myStore.id')
      this.setNumbers(controller, myStoreId);
    }else{
      let myStore = this.controllerFor('application').get('myStore').then(data => {
        this.setNumbers(controller, data.id);
      });
    }
  },
});