CakePHP 查询记录
要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。
然后使用上述实例的find()方法从数据库中查询记录,这个方法将返回表中的所有记录。
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', ['controller' => 'Users', 'action' => 'index']); $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); } } ?>
新建src/Template/Users/index.ctp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>
访问http://localhost/cakephp4/users执行上述示例,输出如下所示: