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