I ajaxly call a route and pass data to it, In my controller, I want to get $_POST['var'] , $_POST['var2'], it seems because of using HttpFoundation in drupal 8, $_POST and $_GET are not exists in old method, How I can access $_POST parameters in custom Controller?
11
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2$_POST still exists, you just shoudn't use it directly. If $_POST is empty, then the request object will also be empty and your error happens earlier. Often, this is for example because mod_rewrite is not enabled/configured correctly and the page is redirect through the not found directive, which drops post data. – Berdir Jul 14 '16 at 17:44
43
From the change record:
$name = $_POST['name']; // form param
becomes
$name = \Drupal::request()->request->get('name'); // form param
Incidentally, for GET vars, you would use:
$query = \Drupal::request()->query->get('name');
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thanks, and do you know how can I get all items? I mean $_POST completely not one item. – Yusef Mohamadi Jul 14 '16 at 9:59
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2I haven't checked, but knowing Symfony I'd assume:
\Drupal::request()->request->all()– Clive♦ Jul 14 '16 at 10:02 -
1Thanks, this is true answer to my question although I didn't get expected result ( maybe there is a problem in another place ,I ask it in another question. – Yusef Mohamadi Jul 14 '16 at 10:08
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I can confirm that you can use \Drupal::request()->query->all() to get all $_GET variables. – oknate Jul 13 '17 at 14:26
18
In a controller get the request with a type-hinted argument Request $request:
<?php
namespace Drupal\mymodule\Controller;
use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\Request;
class ExampleController extends ControllerBase {
/**
* Controller to return a POST or a GET parameter.
*/
public function action(Request $request) {
// get your POST parameter
$foo = $request->request->get('foo');
// or get your GET parameter
$foo = $request->query->get('foo');
return ['#markup' => $foo];
}
}
More info https://www.drupal.org/docs/8/api/routing-system/using-parameters-in-routes
9
Inject the RequestStack into your controller.
The current request contains the query attribute that in turn contains the GET parameters. request contains the POST parameters.
<?php
namespace Drupal\example_module\Controller;
use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\DependencyInjection\ContainerInterface;
/**
* An example controller.
*/
class ExampleController extends ControllerBase {
/**
* @var Symfony\Component\HttpFoundation\RequestStack
*/
private $requestStack;
/**
* Constructor.
*
* @param Symfony\Component\HttpFoundation\RequestStack $request_stack
*/
public function __construct(RequestStack $request_stack) {
$this->requestStack = $request_stack;
}
/**
* {@inheritdoc}
*/
public static function create(ContainerInterface $container) {
return new static(
$container->get('request_stack')
);
}
/**
* {@inheritdoc}
*/
public function action() {
// Get your GET parameter here.
$this->requestStack->getCurrentRequest()->query->get('foo');
}
}
2
You can check the Request object like
\Drupal::request()->getMethod();
it will returns GET or POST or whatever. If you are working inside an object, remember to DI the Request service.
