Laravel 5.2 - 多重关系

Given this table structure:

I have a members relation on my model.

public function members() {
    return $this->belongsToMany('App\User', 'group_members')->withPivot('status', 'right_rid')->withTimestamps();
}

When I call this function it will return the members of a specific function.

Now I want to call a function called rights or something like that, which will return the right_id and the type of the rights table in a single line of code.

Now when I want the right_id of a member I use this line:

$group->members->where('id', Auth::user()->id)->first()->pivot->right_id

But then I don't have the rights type because the right_id is in the group_members table.

I want it to work something like this:

$group->members->where('id', Auth::user()->id)->first()->rights

I hope that this is enough information to give me some advice, or even a solution for this problem.

I know this could also be done by making a custom query, but I like the way Laravel works.

You could easily make a GroupMember model and do something like the following...

GroupMember::where('user_id', Auth::user()->id)->where('group_id', $group_id)->with(['rights', 'groups', 'users'])->get();

This assumes you have a rights, groups, and users method all in your GroupMember model. Each of these should be a belongsTo.