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Modify _all_ Drupal links
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<?php | |
namespace Drupal\wt_base; | |
use Symfony\Component\HttpFoundation\RequestStack; | |
use Drupal\Core\PathProcessor\OutboundPathProcessorInterface; | |
use Symfony\Component\HttpFoundation\Request; | |
use Drupal\Core\Render\BubbleableMetadata; | |
/** | |
* Class DefaultService. | |
*/ | |
class LinkModifierService implements OutboundPathProcessorInterface { | |
/** | |
* Symfony\Component\HttpFoundation\RequestStack definition. | |
* | |
* @var \Symfony\Component\HttpFoundation\RequestStack | |
*/ | |
protected $requestStack; | |
/** | |
* Constructs a new DefaultService object. | |
*/ | |
public function __construct(RequestStack $request_stack) { | |
$this->requestStack = $request_stack; | |
} | |
/** | |
* {@inheritdoc} | |
*/ | |
public function processOutbound($path, &$options = array(), Request $request = NULL, BubbleableMetadata $bubbleable_metadata = NULL) { | |
if (empty($request)) { | |
$request = $this->requestStack->getCurrentRequest(); | |
} | |
// On every page of type "product" add the product id as query parameter to every link on that page | |
// no matter if that link is in a menu, a block or in a CKeditor text field of the node. | |
// It does only modify interal though, but not links to external homepages. | |
$node = $request->attributes->get('node'); | |
if ($node && $node->bundle() === 'product') { | |
$options['query'][] = [$node->bundle() => $node->id()]; | |
} | |
return $path; | |
} | |
} |
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services: | |
wt_base.link_modifier_service: | |
class: Drupal\wt_base\LinkModifierService | |
tags: | |
- { name: path_processor_outbound, priority: 3000 } | |
arguments: ['@request_stack'] |
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