public function linkForm($user_id) { $user = User::find($user_id); if ($user == null) { abort(404); } if ($user->id != Auth::id() && !Auth::user()->can('board')) { abort(403); } return view('users.study.edit', ['link' => null, 'user' => $user, 'studies' => Study::orderBy('name', 'asc')->get()]); }