Question

因此，用户需要update个产品和用户的产品必须具有唯一的名称，我不希望用户收到错误消息Product with same name already exists

如何调整Laravel的unique验证器来执行此操作

  $sql = "SELECT `id` FROM `products` WHERE `name` = '$value' AND user_id != '$user_id' AND id != '$id' ";

这将确保如果用户决定保持产品名称不变，则product name with same already exists不会出现任何错误消息，只要它属于同一用户并且产品ID保持不变

我在FormRequest rules（）

中尝试了这个

 $id = $this->route('id');
 $user_id = $this->user()->id;

 return [
'name'=>"unique:product,name,user_id,$user_id,id,$id"
 ];

Answer 1

您应该添加自定义验证，这是我的解决方案：

，像这样更改启动功能

 public function boot()
 {
        Illuminate\Support\Facades\Validator\Validator::resolver(function($translator, $data, $rules, $messages) {
            return new \App\CustomValidation($translator, $data, $rules, $messages);
        });
 }

将CustomValidation.php添加到app文件夹，代码如下

 use Illuminate\Validation\Validator;
 class CustomValidation extends Validator
 {

    public function validateCustomUnique($attribute, $value, $parameters)
    {
          //$attribute is the filed name which you want validate
          //$value is the value of that filed
          //$parameters is an array which you can pass extra paramter form validation
    }
}

return [
    'name'=>"custom_unique:$paramter1,$params2,$paramter4"//these paramters will pass to validateCustomUnique function
];

从validateCustomUnique函数验证然后返回true或false

如何向Laravel Unique Validator添加更多约束

1 个答案: