Getting request parameters in Symfony 2
Symfony provides methos using that you can get request values...
1) To find the GET params you can use
// It will return all GET params
$this->getRequest()->query->all();
// It will return GET params by name
$this->getRequest()->query->get('foo');
2) To find the POST params you can use
// It will return all GET params
$this->getRequest()->request>all();
// It will return GET params by name
$this->getRequest()->request>get('foo');
Request and response other object
$request->query->get('foo'); //gets foo GET var.
$request->request->get('bar'); //gets POST var.
$request->getMethod();
$request->server->get('HTTP_HOST'); //server variables.
$request->getPathInfo(); //gets the URI.
$request->files->get('file'); //files posted in a form.
$request->headers->get('content-type');
$request->cookies->get('PHPSESSID'); //cookies
$request->getLanguages();
$request->getPreferedLanguage(array('es','fr'));
$request->isXmlHttpRequest();
Working with the session
You can manage session attributes with:
$session = $this->getRequest()->getSession();
or the shortcut version
$this->get('session');
and to work with the data:
$session->get('foo','default value');
$session->set('foo','bar');
Redirecting in a controller:
$this->redirect($this->generateUrl("homepage"));
Rendering text from a controller:
return new Response('…');
Forwarding:
return $this->forward('Bundle:Controller:Action');
Redirect to 404 not found:
throw $this->createNotFoundException(message);
Flash messages
Flash messages only last one request and they are stored in a FlashBag:
$this->get('session')->getFlashBag()->add('notice','message');
To iterate trough all flash messages in a template you can use:
{% for flashMessage in app.session.flashbag.get('notice') %}
{{ flashMessage }}
{% endfor %}
