Javascript Ember js在模型中迭代并检查值是否存在

这是我的应用程序中的代码示例

讨论模式

App.Discussion = Ember.Model.extend({
    id: Ember.attr(),
    title: Ember.attr(),
    body: Ember.attr(),
    course_id: Ember.attr(),
    replies: Ember.hasMany('App.Reply', {key:'replies', embedded: 'load'}),
    creator_id: Ember.attr(),
    creator_first_name: Ember.attr(),
    creator_last_name: Ember.attr(),
    status: Ember.attr(),
    created_at: Ember.attr(),
    accepted_answer_id: Ember.attr()
});

应答模型

App.Reply = Ember.Model.extend({
    id: Ember.attr(),
    body: Ember.attr(),
    discussion_id: Ember.attr(),
    discussion: Ember.belongsTo('App.Discussion', {key: 'discussion_id'}),
    creator_id: Ember.attr(),
    creator_first_name: Ember.attr(),
    creator_last_name: Ember.attr(),
    status: Ember.attr(),
    created_at: Ember.attr()
});

App.Discussion.Controller = Ember.ObjectController.extend({
  hasSomething: function() {
   // Here I want to check whether user_id = 101 in the replies array of the discussion Model. 
 // If any of the replies has the user_id as 101 return true.
  }.property('id')

});

我尝试将回复放入数组中，然后对其进行迭代和检查

replies = this.get('model.replies');

        replies.forEach(function(reply) {
           console.log(reply.get('creator_id'));
            if (window.userId === reply.get('creator_id')) {
                // do stuff here.
            }
        }); 

---

有没有更好的/EMBER方法来实现这一点呢？

EMBER有一些很好的助手（也可以在常规阵列上使用，除非您禁用原型扩展）

可能值得一看

hasSomething: function() {
  // Here I want to check whether user_id = 101 in the replies array of the discussion Model. 
  // If any of the replies has the user_id as 101 return true.
  var replies = this.get('model.replies');
  return replies.isAny('creator_id', window.userId);
}.property('model.replies.@each')

---

您可能还想设置属性，以便使用

model.repries来实际观察回复数组。@each

太棒了，这正是我要找的