HasMany关系创建记录 - 为什么未定义？

Question

我有一个问题涉及到“创建记录的HasMany关系”，但我已经查看并尝试了堆栈溢出中已有的答案，但它们不起作用。问题在于模型未定义。我已经结合了QuestionsController和TopicController。

这是主题模型：

App.Topic = DS.Model.extend({ 
    title: DS.attr('string'), 
    questions: DS.hasMany('Question', {async: true}), 
}); 

App.Topic.FIXTURES = [ 
{ 
    id: 1, 
    title: 'Early America', 
    questions: [1,2] 
}, 
{ 
    id: 2, 
    title: 'American Revolution', 
}, 
{ 
    id: 3, 
    title: 'Modern America', 
} 
]; 

这是TopicsController：

App.TopicsController = Ember.ArrayController.extend({ 

    actions: { 
     createTopic: function() { 
      var Topic = this.store.createRecord('Topic', { 
       title: 'Untitled Topic' 
      }); 
      /* Topic.get(questions.find(1)... */ 
      Topic.save(); 

      this.set('newTitle', ''); 
     }, 
    } 
}); 

这是TopicController：

App.TopicController = Ember.ObjectController.extend({ 
    isEditing: false, 
    actions: { 
     editTopic: function() { 
      this.set('isEditing', true); 
     }, 
     acceptChanges: function() { 
      this.set('isEditing', false); 
     }, 
     removeTopic: function() { 
      var topic = this.get('model'); 

      topic.deleteRecord(); 
      topic.save(); 
     }, 
     createQuestion: function() { 
      var question = this.get('store').createRecord('Question', { 
       title: 'Untitled Question', 
       topic: this.get('model'), 
      }); 
      question.save(); 
     } 
    } 
}); 

这是问题的模式：

App.Question = DS.Model.extend({ 
    title: DS.attr('string'), 
    topic: DS.belongsTo('Topic', {async: true}), 
}); 

App.Question.FIXTURES = [ 
{ 
    id: 1, 
    title: 'What continent did Colombus find?', 
    topic: 1, 
}, 
{ 
    id: 2, 
    title: 'Other question', 
}, 
]; 

这是QuestionController：

App.QuestionController = Ember.ObjectController.extend({ 
    isEditing: false, 
    actions: { 
     editQuestion: function() { 
      this.set('isEditing', true); 
     }, 
     acceptChanges: function() { 
      this.set('isEditing', false); 
     }, 
     removeQuestion: function() { 
      console.log(this); 
         console.log("hello"); 
         var question = this.get('model'); 

         question.deleteRecord(); 
         question.save(); 
     } 
    } 
}); 

这是所有的文件都存储：https://github.com/Glorious-Game-Design-ASL/MapQuizGame/tree/master/quiz_creator

Answer 1

唷，那花了一段时间来弄清楚。我有一个[最小的，没有定型或钟声和口哨声]工作示例这里：https://gist.github.com/polerc/8137422

摘要：

基本上，TopicsController和QuestionsController有太多的层次感。将TopicsController合并为QuizController并将QuestionsController合并为TopicController。