如何优雅的使用 laravel 的 validator验证方法

web 开发过程中经常会需要进行参数验证，laravel 中我们常用 validator 或者 request 这两种方法来进行验证，但是这两种验证都不是很方便进行自定义提示信息，自定义验证规则，所以下面来介绍一种很方便的用法：

新建抽象类

  <?php    namespace AppHttpValidators;    use Validator;    abstract class AbstractValidator  {     /**    * Validator    *    * @var IlluminateValidationFactory    */   protected $validator;     /**    * Validation data key => value array    *    * @var array    */   protected $data = array();     /**    * Validation errors    *    * @var array    */   protected $errors = array();     /**    * Validation rules    *    * @var array    */   protected $rules = array();     /**    * Validation messages    *    * @var array    */   protected $messages = array();     /**    * Validation codes    *    * @var array    */   protected $codes = array();     public function __construct(array $data)   {    $this->data = $data;    $this->before();    $this->validator = Validator::make($this->data, $this->rules, $this->messages);    $this->after();   }     /**    * Set data to validate    *    * @return validator    */   public function getValidator()   {    return $this->validator;   }     /**    * Set data to validate    *    * @return $this    */   public function with(array $data)   {    $this->data = $data;    $this->before();    $this->validator = $this->validator->make($this->data, $this->rules, $this->messages);    $this->after();    return $this;   }     /**    * Validation passes or fails    *    * @return boolean    */   public function passes()   {    if ($this->validator->fails()) {     $this->errors = $this->validator->messages();       return false;    }      return true;   }     /**    * Return errors, if any    *    * @return array    */   public function errors()   {    return $this->errors;   }     /**    * Return errors codes, if any    *    * @return array    */   public function getCodes()   {    return $this->codes;   }     /**    * getRules    *    * @return array    */   public function getRules()   {    return $this->rules;   }     /**    * getData    *    * @return array    */   public function getData()   {    return $this->data;   }     /**    * getErrors    *    * @return array    */   public function getErrors()   {    return $this->errors;   }     /**    * getMessages    *    * @return array    */   public function getMessages()   {    return $this->messages;   }     /**    * setRule    *    * @param string $key    * @param string $value    *    * @return $this    */   public function setRule($key, $value)   {    $this->rules[$key] = $value;      return $this;   }     /**    * emptyRules    *    * @return $this    */   public function emptyRules()   {    $this->rules = array();      return $this;   }     /**    * sometimes    *    * @param string  $attribute    * @param string|array $rules    * @param callable  $callback    *    * @return $this    */   public function sometimes($attribute, $rules, callable $callback)   {    $this->validator->sometimes($attribute, $rules, $callback);      return $this;   }     /**    * resolver    *    * @param Closure $resolver    *    * @return $this    */   public function resolver(Closure $resolver)   {    Validator::resolver($resolver);      return $this;   }     /**    * replacer    *    * @param Closure $resolver    *    * @return $this    */   public function replacer($replace, Closure $resolver)   {    Validator::replacer($replace, $resolver);      return $this;   }     /**    * extendImplicit    *    * @param Closure $resolver    *    * @return $this    */   public function extendImplicit($extendImplicit, Closure $resolver)   {    Validator::extendImplicit($extendImplicit, $resolver);      return $this;   }     /**    * extend    *    * @param string   $rule    * @param Closure|string $extension    * @param string   $message    *    * @return $this    */   public function extend($rule, $extension, $message = null)   {    Validator::extend($rule, $extension, $message);      return $this;   }     /**    * before (extend(),resolver())    *    * @return $this    */   public function before()   {   }     /**    * after(sometimes())    *    * @return $this    */   public function after()   {   }  }

新建中间件

  <?php    namespace AppHttpMiddleware;    use Closure;  use IlluminateHttpRequest;    class ValidateAdminMiddleware  {   /**    * This namespace is applied to the controller routes in your routes file.    *    * In addition, it is set as the URL generator's root namespace.    *    * @var string    */   protected $namespace = 'AppHttpValidators';     /**    * Handle an incoming request.    *    * @param IlluminateHttpRequest $request    * @param Closure     $next    *    * @return mixed    */   public function handle(Request $request, Closure $next, $validator = null)   {    if ($request->isMethod('POST')) {     $type = $request->segment(1);     if ($validator) {      $validator = $this->namespace . '\' . studly_case($type) . '\' . studly_case($validator) . 'Validator';      $validator = new $validator($request->all());        if (!$validator->passes()) {       if ($request->isAjax()) {        return $validator->errors()->first();       } else {        return redirect()->back()        ->withErrors($validator->getValidator())        ->withInput();       }      }     }    }    return $next($request);   }  }

新建 TestTestValidator

  <?php    namespace AppHttpValidatorsAdmin;    use AppHttpValidatorsAbstractValidator;    class TestValidator extends AbstractValidator  {   /**    * Validation rules    *    * @var Array    */   protected $rules = array(    'name' => ['required', 'test', 'min:1'],   );     /**    * Validation messages    *    * @var Array    */   protected $messages = array(    'name.required' => '必填',    'name.min' => '最少1个字符',    'name.test' => '测试',   );     /**    * 自定义验证规则或者扩展Validator类    */   public function before()   {    $this->extend('test', function ($attribute, $value, $parameters) {     return bool;    });   }  }

路由中如何使用

  Route::post('/', ['middleware' => ['valiAdmin:Test'], 'uses' => 'IndexController@test']);

具体使用可以自行配置~