Ember Data- createRecord在hasMany关系中 [英] Ember Data- createRecord in a hasMany relationship

问题描述

创建子记录时，我必须在父对应的属性上使用pushObject吗？

查看文档时，我得到的印象是我需要正确设置记录的父属性并保存。

这是我如何做的：

  addPlugin：function（）{
 //获取值
 var title = this.get（'newPluginName'）; 
 if（！title.trim（））{return; } 
 
 var plugin = {
 name：title，
 category：this.get（'model'），
 url：''
}; 
 var plugin = this.store.createRecord（'plugin'，plugin）; 
 plugin.save（）; 
 
 //清除文本字段
 this.set（'newPluginName'，''）; 
 $（＃new-plugin）。blur（）; 
} 
  

我在Chrome中的Ember检查器中看到新创建的记录，但不是肮脏，但它不存在于父列表中，并且在我刷新之后它已经消失。

解决方案

对我有用的是以下：

  var child = this.get（'store'）。createRecord（'child'，{
 name ：'New Child'，
 parent：parent 
}; 
 child.save（）; 
 
 parent.get（'children'）。addObject（child） ; 
 //当您保存
 //子代时，我的后端会自动添加关系的倒数，因此我不需要单独保存父项
  

我不知道什么 addPlugin 属于，但如果您正在创建一个ChildrenArrayController的孩子可能要包含

 需要：['parent'] 
  

在您的控制器中，然后创建孩子并将其添加到您将需要调用的父级：

  var parent = this.get（'controllers.parent'）; 
  

I am using Ember Data beta2 and I have a hasMany relationship set up.

When creating a child record do I have to use pushObject on the parent's corresponding property?

When looking at the documentation I get the impression that I need to correctly set the record's parent property and save it.

This is how I do it:

    addPlugin: function() {
        //get the value
        var title = this.get('newPluginName');
        if (!title.trim()) { return; }

        var plugin = {
            name: title,
            category: this.get('model'),
            url: ''
        };
        var plugin = this.store.createRecord('plugin', plugin);
        plugin.save();

        //clear the text field
        this.set('newPluginName', '');
        $("#new-plugin").blur();
    }

I see the newly created record in the Ember inspector in Chrome, it is not dirty, but it is not present in the parent listing and after I refresh it is gone.

解决方案

What works for me is the following:

var child = this.get('store').createRecord('child', {
   name: 'New Child',
   parent: parent
};
child.save();

parent.get('children').addObject(child);
// My backend automatically adds the inverse of relationships when saving     
// the child, so I don't need to save the parent separately

I don't know what addPlugin belongs to, but if you are creating the children from a ChildrenArrayController you may want to include

needs: ['parent']

in your controller. And before creating the child and adding it to the parent you will need to call:

var parent = this.get('controllers.parent');

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