phalcon 利用注解实现验证
为了精简验证参数的代码，做如下处理。（对Laravel 5 来说，这个功能是现成的，phalcon的话，需手工处理一下）
在注册服务时：
// 验证器事件。$di是FactoryDefault 对象。
$my_eventsManager = new EventsManager();
$my_eventsManager->attach( 'dispatch',new Annotation() );
$di->get("dispatcher")->setEventsManager($my_eventsManager);
主要代码：
namespace Apps\Validations;
use Apps\Exceptions\InvalidRequestException;
use Phalcon\Events\Event;
use Phalcon\Mvc\Dispatcher;
use Phalcon\Mvc\User\Plugin;
/**
* 利用 注解 实现控制器请求参数验证。
*
*/
class Annotation extends Plugin
{
/**
* This event is executed before every route is executed in the dispatcher
*/
public function beforeExecuteRoute(Event $event, Dispatcher $dispatcher)
{
// Parse the annotations in the method currently executed
$annotations = $this->annotations->getMethod(
$dispatcher->getControllerClass(),
$dispatcher->getActiveMethod()
);
// Check if the method has an annotation 'Validation'
if ($annotations->has('Validation')) {
$annotation = $annotations->get('Validation');
$class =trim($annotation->getNamedParameter('class'));
$validation = new $class;
$messages = $validation->validate($this->request->get());
if (count($messages)) {
foreach ($messages as $message) {
throw new InvalidRequestException($message);
}
}
}
}
}
异常代码
namespace Apps\Exceptions;
use Exception;
class InvalidRequestException extends Exception
{
public function __construct(string $message = "", int $code = 400)
{
parent::__construct($message, $code);
}
}
修改 public/index.php
try{
/**
* 定义项目目录
*/
define('ROOT_PATH', dirname(__DIR__).'/');
define('APPS_PATH', ROOT_PATH . 'apps/');
$di = new \Phalcon\DI\FactoryDefault();
require CONFIG_PATH . 'services.php';
$application = new Application();
$application->setDI($di);
require CONFIG_PATH . 'modules.php';
require CONFIG_PATH . 'router.php';
echo $application->handle()->getContent();
}catch(\Phalcon\Exception $e){
echo "phalcon err";
}catch(\Apps\Exceptions\InvalidRequestException $e){
echo "请求参数错误啦：".$e->getMessage();die;
}catch(PDOException $e){
echo "err";
}
使用示例，带注解的方法：
namespace Apps\Api\Controllers;
use Apps\Common\Controllers\ControllerBase;
class TestValidateController extends ControllerBase
{
/**
* 这是一个测试用方法
*
* @Validation( class = "\Apps\Validations\TestValidation" )
*/
public function indexAction()
{
echo "all ok4";
}
}
使用示例：控制器验证，验证请求中一定有aa这个参数。
namespace Apps\Validations;
use Phalcon\Validation;
use Phalcon\Validation\Validator\Email;
use Phalcon\Validation\Validator\PresenceOf;
class TestValidation extends Validation
{
public function initialize()
{
$this->add(
'aa',
new PresenceOf(
[
'message' => 'aa必须有。',
]
)
);
}
}