public function revokePermission($permission, $user_id)
    {
        $user = \App\User::findorfail($user_id);

        $user->revokePermissionTo(str_slug($permission, ' '));

        return redirect('scaffold-users/edit/'.$user_id);
    }
public function revokePermission($permission, $user_id)
    {
        $user = \App\User::findorfail($user_id);

        $user->revokePermissionTo(str_slug($permission, ' '));

        return redirect('scaffold-users/edit/'.$user_id);
    }
public function revokePermission ( $ permission , $ user_id ) { $ user = \ App \ User :: findorfail ( $ user_id ) ; $ user -> revokePermissionTo ( str_slug ( $ permission , ' ' ) ) ; return redirect ( 'scaffold-users/edit/' . $ user_id ) ; }
revoke Permission to a user.

@param \Illuminate\Http\Request

@return \Illuminate\Http\Response
revoke Permission to a user .