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 App\Http\Validators; use Validator; abstract class AbstractValidator { /** * Validator * * @var \Illuminate\Validation\Factory */ 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 App\Http\Middleware; use Closure; use \Illuminate\Http\Request; 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 = 'App\Http\Validators'; /** * Handle an incoming request. * * @param \Illuminate\Http\Request $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