使用 Laravel 和 Eloquent 获取相关对象
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Fetching related objects with Laravel and Eloquent
提问by salgua
I created some models in Laravel extending the Eloquent class. In these models I added relations, like in this example:
我在 Laravel 中创建了一些扩展 Eloquent 类的模型。在这些模型中，我添加了关系，就像在这个例子中一样：
//in the User class
public function group()
{
return $this->belongsTo('Group');
}
in this way I'm able to retrieve the group object for a specific user in this simply way:
通过这种方式，我能够以这种简单的方式检索特定用户的组对象：
User::find(1)->group
and this is nice. I need to fetch the entire table and display it in json format, so I do
这很好。我需要获取整个表并以json格式显示，所以我这样做
User::all()->toJson()
I obtain the whole table, but I have the "group_id" column instead of the group object. Is there a simple way to include related object in JSON? I know that I can loop in the collection and manually add the object, but I think that should be bad practice because I need to do a lot of query, when this problem can be solved using a single query with a join. Any idea?
我获得了整个表，但我有“group_id”列而不是组对象。有没有一种简单的方法可以在 JSON 中包含相关对象？我知道我可以在集合中循环并手动添加对象，但我认为这应该是不好的做法，因为我需要进行大量查询，而这个问题可以使用带有连接的单个查询来解决。任何的想法？
回答by Nathan Loding
I believe eager loading is what you're looking for: http://laravel.com/docs/eloquent#eager-loading
我相信急切加载是你正在寻找的：http: //laravel.com/docs/eloquent#eager-loading
User::with('group')->get()->toJson()
User::with('group')->get()->toJson()
Edit:fixing call to get()from all()
编辑：修复呼叫get()来自all()
回答by salgua
Soved!
索维！
User::with('group')->get()->toJson()
