要更新数据库中的记录,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更新的特定记录.
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.使用此实例设置要更新的新值,然后最后使用 TableRegistry 类的实例调用 save()方法来更新记录.
在config/routes.php文件中进行更改,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/edit', ['controller' => 'Users', 'action' => 'edit']); $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 edit($id){ if($this->request->is('post')){ $username = $this->request->data('username'); $password = $this->request->data('password'); $users_table = TableRegistry::get('users'); $users = $users_table->get($id); $users->username = $username; $users->password = $password; if($users_table->save($users)) echo "User is udpated"; $this->setAction('index'); } else { $users_table = TableRegistry::get('users')->find(); $users = $users_table->where(['id'=>$id])->first(); $this->set('username',$users->username); $this->set('password',$users->password); $this->set('id',$id); } } } ?>
在 src/Template 创建目录用户,如果已经创建则忽略,并在该目录下创建一个名为 index.ctp 的视图.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>
在名为 edit.ctp 用户目录下创建另一个查看文件>并将以下代码复制到其中.
src/Template/Users/edit.ctp
<?php echo $this->Form->create("Users",array('url'=>'/users/edit/'.$id)); echo $this->Form->input('username',['value'=>$username]); echo $this->Form->input('password',['value'=>$password]); echo $this->Form->button('Submit'); echo $this->Form->end(); ?>
访问以下网址并点击编辑链接编辑记录,执行以上示例.
http://localhost:85/CakePHP/users
访问上述网址后然后单击编辑链接,您将收到以下输出,您可以在其中编辑记录.