CakePHP 更新记录
为了查询数据库表的记录,我们首先需要使用TableRegistry类的get()方法来获取实例,get()方法接受表名作为参数。
使用这个新实例的get()方法,并传递主键来查找记录,该记录将保存在另一个实例中。
使用此实例设置要更新的新值,然后用TableRegistry类的实例调用save()方法来更新记录。
例子
修改config/routes.php文件,如下所示:
<?php use Cake\Http\Middleware\CsrfProtectionMiddleware; use Cake\Routing\Route\DashedRoute; use Cake\Routing\RouteBuilder; $routes->setRouteClass(DashedRoute::class); $routes->scope('/', function (RouteBuilder $builder) { $builder->registerMiddleware('csrf', new CsrfProtectionMiddleware([ 'httpOnly' => true, ])); $builder->applyMiddleware('csrf'); // $builder->connect('/pages',['controller'=>'Pages','action'=>'display', 'home']); $builder->connect('/users/edit', ['controller' => 'Users', 'action' => 'edit']); $builder->fallbacks(); });
新建src/Controller/UsersController.php文件,并将以下代码复制到该文件中:
<?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->getData('username'); $password = $this->request->getData('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); } } } ?>
新建src/Template/Users/index.php文件,并将以下代码复制到该文件中:
<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>
新建src/Template/Users/edit.php文件,并将以下代码复制到该文件中:
<?php echo $this->Form->create(NULL,array('url'=>'/users/edit/'.$id)); echo $this->Form->control('username',['value'=>$username]); echo $this->Form->control('password',['value'=>$password]); echo $this->Form->button('Submit'); echo $this->Form->end(); ?>
访问http://localhost/cakephp4/users执行上述示例,输出如下所示:
单击‘edit’按钮,输出如下所示:
现在,我们将名称 Virat 更新为 Virat123 并提交,输出如下所示: