Laravel 具有唯一性的验证规则并与另一列进行比较

Question

我需要一点帮助

这是我的用户 table。我想写一个 laravel 验证规则，就像一个 group_id 应该只有一个用户。例如，另一个名为 John 和 group_id=1 的条目应该给出 The name has already been taken. 错误，但应该插入 john 和 group_id=2.

*************************** 1. row ***************************          
        id: 1
      name: jhon
  group_id: 1
created_at: 2021-05-31 10:23:42
updated_at: 2021-05-31 10:23:42
*************************** 2. row ***************************
        id: 2
      name: michele
  group_id: 2
created_at: 2021-05-31 10:23:42
updated_at: 2021-05-31 10:23:42

我试过如下，但没有用。谁能帮帮我？

'user.name' => ['required','unique:user,name'.$this->user->id,Rule::unique('user')->where(function ($query) {
    return $query->where('group_id', $this->user->group_id);
})],

Answer 1

您可以为此编写自定义验证

'user.name' => ['required',function ($attribute, $value, $fail) {
                      
   $user= User::where(function ($query){
                            $query->where('name',$this->name);
                            $query->where('group_id',$this->group_id );
                        })->exists();
                        
                    
                       if($user){
                           $fail('User with group already exist');
                       }
                    }],

可以参考官方文档

https://laravel.com/docs/8.x/validation#using-closures

更新

 'user.name' => ['required',function ($attribute, $value, $fail) {
                          
       $user= User::where(function ($query){
                              $query->where('id','!=',$this->user->id)
                                $query->where('name',$this->user->name);
                                $query->where('group_id',$this->user->group_id );
                            })->exists();
                            
                        
                           if($user){
                               $fail('User with group already exist');
                           }
                        }],

Laravel 具有唯一性的验证规则并与另一列进行比较

Laravel validation rule with unique and compare with another column

mysql

validation

rules

laravel