laravel 如何在laravel中链接雄辩的关系？
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How to chain eloquent relations in laravel?
提问by Leap Hawk
So far I was extracting the relation objects as arrays and then doing something like:
到目前为止，我将关系对象提取为数组，然后执行以下操作：
App\Model::find($id)
But however is there a way to do something like:
但是有没有办法做这样的事情：
Auth::user()->group()->members()
It works until Auth::user()->groupbut no further chaining. Please help if you've done something. Or I'm just newbie.
它工作直到Auth::user()->group但没有进一步的链接。如果你做了什么，请帮忙。或者我只是新手。
回答by Jonathon
You could use eager loading to load the user's group and then load all of the members of that group.
您可以使用预先加载来加载用户的组，然后加载该组的所有成员。
$user = User::with(['group', 'group.members'])->find(1);
// OR if you already have a user object (Like when using the Auth facade)
$user = Auth::user()->load(['group', 'group.members']);
foreach ($user->group->members as $member) {
// Do something with a member
}
However, if you essentially want to jump down the structure a level, and get all the members related to a user, you could use the hasManyThroughrelationship, in that a user has many members, through a group.
但是，如果您本质上想将结构向下跳一个级别，并获取与用户相关的所有成员，则可以使用hasManyThrough关系，因为用户通过一个组具有许多成员。
// In your User model
public function members()
{
return $this->hasManyThrough(Member::class, Group::class);
}
That way you can simply access the members directly through the user:
这样你就可以直接通过用户直接访问成员：
$members = Auth::user()->members;
Instead of doing a query to access the user's group and then doing another query to access that group's members, Laravel would use a single query with a join to get you the members.
Laravel 不会执行查询来访问用户的组，然后执行另一个查询来访问该组的成员，而是使用带有连接的单个查询来获取成员。
Take a look at the hasManyThrough relationship here
看看这里的 hasManyThrough 关系
回答by Vikash
Try this
尝试这个
Auth::user()->group->members
