将当前口才传递给模型中的getXAttribute

Question

I have create a getIsAdminAttribute that returns boolean and it works if I use Auth::user() however, now I need to pass the User object into this method so that I can check if given user is admin.

class User extends Authenticatable {

    public function getIsAdminAttribute()
    {   
       if (Admin::where('user_id', $user->id)->first()) {
          return true;
       } else {
          return false;
       }
    }
}

However, this doesn't work. How can I pass the $user into this method, so that I can call it like:

$user->is_admin and it returns boolean.

---

If I try this, it returns null.

getIsAdminAttribute($user) {
   dd($user);
}

Answer 1

You are already in the User model, so you can use $this to access the properties of the current object.

public function getIsAdminAttribute()
{   
   return Admin::where('user_id', $this->id)->count() > 0;
}