如何通過另一個字段值驗證字段？ Laravel 5.4

Question

這是我的請求規則。

public function rules() 
{ 
    return [ 
     "namespace" => "required|max:20", 
     "key" => "required|max:30", 
     "value" => "required", 
     "value_type" => "requied|in:string,integer", 
    ]; 
} 

如果「value_type」是「整數」，那麼我只需要「值」字段中的整數。有什麼方法可以驗證它嗎？ Laravel 5.4

我找到簡單的解決方案

public function rules() 
{ 
    $cond = ''; 
    if ($this->request->get('value_type') == 'integer') { 
     $cond = '|integer'; 
    } 

    return [ 
     "mf_id" => "required|integer", 
     "resource" => "required|string", 
     "res_id" => "required|integer", 
     "value" => "required{$cond}", 
     "value_type" => "required|in:string,integer", 
     "parent" => "string", 
     "parent_id" => "integer", 
    ]; 
} 

Answer 1

$v = Validator::make($data, $this->rules());

，那麼你需要使用有條件地將規則。

$v->sometimes(['value'], 'required|integer', function ($data) { return is_numeric($input->value_type); });

檢查： -

https://laravel.com/docs/5.4/validation#conditionally-adding-rules