javascript-将Ember.js控制器变量设置为Ember Data对象,而不是Promise

我的路线最初没有任何建议.基于一个动作,我想使用Ember Data来获取一个建议数组,获取第一个建议并将其分配给控制器.这是我得到的：

App.IndexRoute = Ember.Route.extend({
  setupController: function(controller, model) {
    this._super(controller, model);
    controller.set('suggestion', null);
  },
  actions: {
    getSuggestion: function() {
      suggestion = this.store.find('suggestion').then(function(s) {
          return s.get('firstObject');
      });
      this.controller.set('suggestion', suggestion);
    }
  }
});

问题在于,建议变量在执行getSuggestion操作之后仍然是一个承诺.解决承诺后,如何仅设置控制器变量？或者如何让它稍后解析并使用实际对象更新变量？

解决方法:

您应该在“ then”块内设置“建议”

App.IndexRoute = Ember.Route.extend({
  setupController: function(controller, model) {
    this._super(controller, model);
    controller.set('suggestion', null);
  },
  actions: {
    getSuggestion: function() {
      controller = this.controller;
      this.store.find('suggestion').then(function(s) {
          suggestion =  s.get('firstObject');
          controller.set('suggestion', suggestion);
      });
    }
  }
});

标签：promise,ember-js,ember-data,javascript
来源： https://codeday.me/bug/20191028/1951675.html