将检索到的Ember数据记录转换为纯对象的Ember方法是什么？ [英] What is the Ember way of converting retrieved Ember Data records into plain objects?

问题描述

我使用 var items = store.find（'model'）; 检索了一系列记录。返回的对象是一个 RecordArray 的实例，并包含几个条目，每个条目都有一个Ember对象，允许我将属性设置到记录中。

这一切看起来都不错。

现在我需要将返回的对象提供给第三方库，当然我也不能发送Ember对象在那里，因为它预期是普通的对象。

我查看了相关材料的页面和页面，但是我找不到任何通用的方法。我很确定有一个，因为这似乎是一个非常基本的用例，所以我不要
想要重新发明轮子，再写一次。

。在这个Ember里有一个设施吗？我如何从这个 RecordArray 获得一个简单的JavaScript对象数组（只是散列，我的意思是）

更新

当然我可以做 JSON .parse（JSON.stringify（recordArray））; ，但是对于那些似乎没有太多转换的性能较差的大对象。我想知道Ember是否提供了更直接的方式（具有更好的性能）。

谢谢！

解决方案

据我所知，没有ObjectSerializer，所以可能最简单的方法是使用JSONSerializer并使用JSON.parse从中创建对象。

  items.map（function（e）{
 return JSON.parse（e.toJSON（））; 
}）; 
  

但是，您可以手动编写序列化逻辑。

  function serializeToObject（model）{
 var fields = Ember.get（model.constructor，'fields'）; 
 obj = {}; 
 fields.forEach（function（fieldName，kindOfField）{
 obj [fieldName] = model.get（fieldName）; 
}）; 
 return obj; 
} 
  

I have retrieved a series of records using var items = store.find('model');. The returned object is an instance of RecordArray, and contains several entries, each with an Ember object that allows me to get and set properties into the records.

It all looks pretty good.

Now I need to feed the returned objects into a third party library, and of course I cannot send Ember objects there since it expects plain objects.

I looked on pages and pages of related material but I can't find any generic way of doing this. I'm pretty sure there is one since this seems to be a very basic use case, so I don't want to reinvent the wheel and write it all again.

Is there a facility in Ember for that? How can I obtain a simple array with plain JavaScript objects (just hashes, I mean) from this RecordArray I got?

UPDATE

Of course I can do JSON.parse(JSON.stringify(recordArray)); but for large objects that doesn't seem too performant with so many conversions. I'm wondering if Ember provides a more direct way (with better performance) of doing this.

Thanks!

解决方案

As far as I know there is no ObjectSerializer so probably easiest way is to use JSONSerializer and use JSON.parse to create objects out of them.

items.map(function(e){
  return JSON.parse(e.toJSON());
});

However, you can manually write serialization logic.

function serializeToObject(model){
  var fields = Ember.get(model.constructor, 'fields');
  obj = {};
  fields.forEach(function(fieldName, kindOfField){
    obj[fieldName] = model.get(fieldName);
  });
  return obj;
}

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