/**
* Update a permission from form request
*
* @param Permission $permission
* @param Request $request
* @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
*/
public function update(Permission $permission, Request $request)
{
$this->authorize('edit_users');
$this->validate($request, ['name' => 'required|string|between:3,50', 'description' => 'string|between:0,100']);
$permission->update($request->all());
$group_list = $request->input('group_list') ?: [];
$permission->groups()->sync($group_list);
flash()->success('Permission Saved', 'The permission has been updated');
return redirect('permission');
}