Symfony的3 /创建自己的框架教程

Question

如下因素教程的请求属性？

'_controller'=> function ($request) { 

的路线声明发现：

$routes->add('hello', new Routing\Route('/hello/{name}', array(
    'name' => 'World', 
    '_controller'=> function ($request) { 
     return render_template($request); 
    } 
))); 

和

$response = call_user_func($request->attributes->get('_controller'), 

在前端控制器发现：

try { 
    $request->attributes->add($matcher->match($request->getPathInfo())); 
    $response = call_user_func($request->attributes->get('_controller'), 
$request); 
} catch (Routing\Exception\ResourceNotFoundException $e) { 
    $response = new Response('Not Found', 404); 
} catch (Exception $e) { 
    $response = new Response('An error occurred', 500); 
} 

会有人愿意来解释如何做到的工作？

Thx提前。

Answer 1

好吧，现在很清楚，这是匹配者完成必要的工作。

$matcher->match($request->getPathInfo()) 

在

try { 
    $request->attributes->add($matcher->match($request->getPathInfo())); 
    $response = call_user_func($request->attributes->get('_controller'), 
$request); 
} catch (Routing\Exception\ResourceNotFoundException $e) { 
    $response = new Response('Not Found', 404); 
} catch (Exception $e) { 
    $response = new Response('An error occurred', 500); 
}