要删除数据库中的记录,我们首先需要使用 TableRegistry 类来获取表.我们可以使用 get()方法从注册表中获取实例. get()方法将数据库表的名称作为参数.现在,这个新实例用于获取我们想要删除的特定记录.
使用这个新实例调用 get()方法并传递主键找到将保存在另一个实例中的记录.使用TableRegistry类的实例调用 delete 方法从数据库中删除记录.
在 config/routes.php 文件,如下面的代码所示.
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('/users/delete', ['controller' => 'Users', 'action' => 'delete']); $routes->fallbacks('DashedRoute'); }); Plugin::routes();
在 src/Controller/UsersController.php 创建 UsersController.php 文件.将以下代码复制到控制器文件中.
src/controller/UsersController.php
<?php namespace App\Controller; use App\Controller\AppController; use Cake\ORM\TableRegistry; use Cake\Datasource\ConnectionManager; class UsersController extends AppController{ public function index(){ $users = TableRegistry::get('users'); $query = $users->find(); $this->set('results',$query); } public function delete($id){ $users_table = TableRegistry::get('users'); $users = $users_table->get($id); $users_table->delete($users); echo "User deleted successfully."; $this->setAction('index'); } } ?>
只需在用户目录下创建一个空的查看文件,名为 delete.ctp .
src/Template/Users/delete.ctp
创建目录用户在 src/Template ,如果已经创建则忽略,并在该目录下创建名为 index.ctp 的视图文件.将以下代码复制到该文件中.
src/Template/Users/index.ctp
<a href = "add">Add User</a> <table> <tr> <td>ID</td> <td>Username</td> <td>Password</td> <td>Edit</td> <td>Delete</td> </tr> <?php foreach ($results as $row): echo "<tr><td>".$row->id."</td>"; echo "<td>".$row->username."</td>"; echo "<td>".$row->password."</td>"; echo "<td><a href='".$this->Url->build (["controller" => "Users","action" => "edit",$row->id])."'>Edit</a></td>"; echo "<td><a href='".$this->Url->build (["controller" => "Users","action" -> "delete",$row->id])."'>Delete</a></td></tr>"; endforeach; ?> </table>
通过访问以下网址并点击删除链接删除记录来执行上述示例.
http://localhost:85/CakePHP/users
访问上述URL并单击"删除"链接后,您将收到以下输出,您可以删除记录.