Question

创建新的Role时，管理员可以选择他想要分配给该角色的不同权限。将新创建的Role保存到数据库后，所选权限将同步到right_role表。

public function store(CreateRoleRequest $request) {
    $role = new Role(['name' => $request->get('name')]);

    $rights = [];
    foreach ($request->get('rights') as $id => $enabled) {
        if ($enabled) {
            $rights[] = $id;
        }
    }

    $role->save();
    $role->rights()->sync($rights);

    return redirect()->route('users.index');
}

但是，如何针对不存在的值验证提交的权限？我可以在CreateRoleRequest吗？

中执行此操作

Answer 1

This can be done with custom validator. Here is example how the custom validators can be used in CreateRoleRequest

public function __construct() {
    Validator::extend("valid_rights", function($attribute, $value, $parameters) {
        $rules = [
            'right_id' => 'exists:rights,id'
        ];
        foreach ($value as $rightId) {
                $data = [
                    'right_id' => $rightId
                ];
                $validator = Validator::make($data, $rules);
                if ($validator->fails()) {
                    return false;
                }
            }
        return true;
    });
}

public function rules() {
    return [
        'containers' => 'required|valid_rights',
    ];
}

Laravel 5验证多对多数据

1 个答案: