public function destroy(Role_user $role_user)
 {
     if (is_integer($role_user)) {
         $role_user = Role_user::find($role_user);
     }
     $role_user->delete();
     Flash::success('Role_user has been created Deleted!');
     return Redirect::back();
 }
 public function destroy($role_user)
 {
     $role_user = Role_user::find($role_user);
     $role_user->delete();
     return response(['data' => true, 'status' => 'success', 'message' => 'successfully deleted']);
 }