可以通过在控制器中添加以下两行来创建验证器.
use Cake\Validation\Validator; $validator = new Validator();
一旦我们创建了验证器,我们就可以使用验证器对象来验证数据.以下代码说明了我们如何验证登录网页的数据.
$validator->notEmpty('username', 'We need username.')->add('username', 'validFormat', ['rule' => 'email','message' => 'E-mail must be valid']); $validator->notEmpty('password', 'We need password.'); $errors = $validator->errors($this->request->data());
使用$ validator对象,我们首先调用 notEmpty()方法,该方法将确保用户名不能为空.之后我们链接了 add()方法,为正确的电子邮件格式再添加一个验证.
之后我们为notEmpty添加了密码字段的验证( )方法将确认密码字段不能为空.
在config/routes.php文件中进行更改,如下所示以下程序.
config/routes.php
<?php use Cake\Core\Plugin; use Cake\Routing\RouteBuilder; use Cake\Routing\Router; Router::defaultRouteClass('DashedRoute'); Router::scope('/', function (RouteBuilder $routes) { $routes->connect('validation',['controller'=>'Valids','action'=>'index']); $routes->fallbacks('DashedRoute'); }); Plugin::routes();
在 src/Controller/ValidsController.php 创建 ValidsController.php 文件.将以下代码复制到控制器文件中.
src/Controller/ValidsController.php
<?php namespace App\Controller; use App\Controller\AppController; use Cake\Validation\Validator; class ValidsController extends AppController{ public function index(){ $validator = new Validator(); $validator->notEmpty('username', 'We need username.') ->add('username', 'validFormat', ['rule' => 'email','message' => 'E-mail must be valid']); $validator->notEmpty('password', 'We need password.'); $errors = $validator->errors($this->request->data()); $this->set('errors',$errors); } } ?>
在 src/Template 创建目录 Valids 并在该目录下创建视图文件名为 index.ctp .将以下代码复制到该文件中.
src/Template/Valids/index.ctp
<?php if($errors){ foreach($errors as $error) foreach($error as $msg) echo '<font color = "red">'.$msg.'</font>l'; } else { echo "No errors."; } echo $this->Form->create("Logins",array('url'=>'/validation')); echo $this->Form->input('username'); echo $this->Form->input('password'); echo $this->Form->button('Submit'); echo $this->Form->end(); ?>
通过访问以下URL : http://localhost:85/CakePHP/validation
点击提交按钮,不输入任何内容.您将收到以下输出.