Symfony控制器中的访问容器

Question

我在Symfony组件的顶部创建一个框架。 http://symfony.com/doc/2.7/create_framework/index.html

我想访问控制器中的容器，但是我不确定如何以OOP方式进行操作。

我目前正在通过global访问它，但是我相信会有更好的方法来做到这一点。 请参考我的代码块：

#services.yml file
services:
  calendar.model.leapyear:
    class: Calendar\Model\LeapYear

前端控制器文件

<?php

require_once __DIR__.'/../vendor/autoload.php';

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing;
use Symfony\Component\HttpKernel;

$request = Request::createFromGlobals();
$routes = include __DIR__ . '/../src/routes.php';
$container = include __DIR__ . '/../src/app/Container.php';

$context = new Routing\RequestContext();
$matcher = new Routing\Matcher\UrlMatcher($routes, $context);

$controllerResolver = new HttpKernel\Controller\ControllerResolver();
$argumentResolver = new HttpKernel\Controller\ArgumentResolver();

$framework = new Framework($matcher, $controllerResolver, $argumentResolver);
$response = $framework->handle($request);

$response->send();

LeapYearController文件

<?php


namespace Calendar\Controller;

use Controller;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

class LeapYearController extends Controller
{

    protected $model;

    public function indexAction(Request $request, $year)
    {
        $this->model = $this->container->get('calendar.model.leapyear');
        if ($this->model->isLeapYear($year)) {
            return new Response('Yep, this is a leap year!');
        }

        return new Response('Nope, this is not a leap year.');
    }
}

基本控制器

<?php

namespace Controller;

use Symfony\Component\DependencyInjection\ContainerAware;

class Controller extends ContainerAware
{
    protected $container;

    public function __construct()
    {
        global $container;
        $this->container = $container;
    }
}

Answer 1

您的基类应如下所示：

<?php

namespace Controller;

use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Symfony\Component\DependencyInjection\ContainerAwareTrait;

class Controller implements ContainerAwareInterface
{
    use ContainerAwareTrait;

    public function getContainer()
    {
        return $this->container;
    }
}

然后在您的控制器中，您可以调用ContainerAwareTrait提供的$this->container或基本控制器提供的$this->getContainer() 。