创建具有belongsTo关系错误的记录-Ember.js

Creating record with belongsTo relationship error - Ember.js

本文关键字：记录 -Ember js 错误 关系 belongsTo 创建      更新时间：2023-09-26

给定两个模型：Message.js和User.js，当我试图用Ember.js创建一个记录时，我不断地收到以下错误。任何Ember.js向导都知道我的代码可能出了什么问题？

//错误：断言失败：您只能将"用户"记录添加到此关系

App.Message = DS.Model.extend({
 title: DS.attr(),
 body: DS.attr(),
 user: DS.belongsTo('user'),
});
App.User = DS.Model.extend({
  first_name: DS.attr(),
  last_name: DS.attr(),
  email: DS.attr(),
  password: DS.attr(),
  messages: DS.hasMany('message'),
});

App.NewMessageController = Ember.Controller.extend({
need: ['application'],
thisUserID: Ember.computed.alias('controllers.application.userID'),
actions: {
    save: function() {
        // Prints -> 'thisUserID' -- all is fine here
        console.log('The user id from new-letter is: '+this.get('thisUserID')); 
        var store = this.store;
        //Prints -> <DS.PromiseObject:ember433> -- Strange?
        console.log("Checking the store: "+store.find('user', this.get('thisUserID'))); 
        var newMessage = store.createRecord('message', {
            title: this.get('title'),
            body: this.get('body'),
        });
        newMessage.save();
        // Prints-> Error: Assertion Failed: You can only add a 'user' record to this relationship
        var user = store.find('user', this.get('thisUserID')).then(function(user) {
          newMessage.set('user', user);
        });
    }
}
});

我不是向导，但您似乎正在尝试将用户记录设置为一条消息：newMessage.set('user', user);

相反，您应该添加以下消息：user.get('messages').addObject(newMessage);

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