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<?php |
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namespace SumoCoders\FrameworkCoreBundle\BreadCrumb; |
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use Knp\Menu\FactoryInterface; |
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use Knp\Menu\MenuItem; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use SumoCoders\FrameworkCoreBundle\Event\ConfigureMenuEvent; |
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final class BreadCrumbBuilder |
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{ |
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/** |
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* @var bool |
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*/ |
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private $extractFromRoute = true; |
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/** |
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* @var EventDispatcherInterface |
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*/ |
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private $eventDispatcher; |
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/** |
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* @var FactoryInterface |
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*/ |
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private $factory; |
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/** |
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* @var array |
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*/ |
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private $items = []; |
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/** |
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* @param FactoryInterface $factory |
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* @param EventDispatcherInterface $eventDispatcher |
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*/ |
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public function __construct(FactoryInterface $factory, EventDispatcherInterface $eventDispatcher) |
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{ |
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$this->factory = $factory; |
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$this->eventDispatcher = $eventDispatcher; |
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} |
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/** |
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* @param RequestStack $requestStack |
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* @return \Knp\Menu\ItemInterface |
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*/ |
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public function createBreadCrumb(RequestStack $requestStack) |
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{ |
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$this->extractItemsBasedOnTheRequest($requestStack); |
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$menu = $this->factory->createItem('root'); |
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$menu->setChildrenAttribute('class', 'breadcrumb'); |
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foreach ($this->items as $i => $item) { |
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// the last item shouldn't have a link |
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if ((count($this->items) - 1) == $i) { |
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$item->setUri(null); |
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} |
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$menu->addChild($item); |
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} |
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return $menu; |
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} |
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/** |
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* @return BreadCrumbBuilder |
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*/ |
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public function dontExtractFromTheRequest() |
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{ |
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$this->extractFromRoute = false; |
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return $this; |
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} |
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/** |
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* Extract the items for the breadcrumb based on a uri |
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* |
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* @param string $uri |
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* @param string $locale |
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* @return BreadCrumbBuilder |
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*/ |
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public function extractItemsBasedOnUri($uri, $locale) |
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{ |
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$this->dontExtractFromTheRequest(); |
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$item = $this->findItemBasedOnUri( |
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$this->getTheMenu(), |
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$uri |
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); |
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if ($item !== null) { |
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$this->addItemsBasedOnTheChild($item, $locale); |
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} |
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return $this; |
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} |
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/** |
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* Add an item into the breadcrumb |
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* |
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* @param MenuItem $item |
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* @return BreadCrumbBuilder |
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*/ |
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public function addItem(MenuItem $item) |
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{ |
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$this->items[] = $item; |
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return $this; |
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} |
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/** |
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* Add a item into the breadcrumb by passing the label and an optional URI. |
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* |
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* @param string $label |
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* @param string $uri |
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* @return BreadCrumbBuilder |
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*/ |
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public function addSimpleItem($label, $uri = null) |
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{ |
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$item = new MenuItem($label, $this->factory); |
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$item->setLabel($label); |
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if ($uri !== null) { |
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$item->setUri($uri); |
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} |
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$this->items[] = $item; |
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return $this; |
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} |
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/** |
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* Reset the items and add the given items all at once |
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* |
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* @param array $items |
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* @return BreadCrumbBuilder |
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*/ |
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public function overwriteItems(array $items) |
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{ |
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$this->items = $items; |
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return $this; |
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} |
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/** |
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* Add items into the breadcrumb based on a given child. |
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* |
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* @param MenuItem $item |
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* @param string $locale |
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*/ |
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private function addItemsBasedOnTheChild(MenuItem $item, $locale) |
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{ |
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if ($item !== null) { |
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$items = []; |
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$temporaryItem = $item; |
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while ($temporaryItem->getParent() !== null) { |
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$breadCrumb = new MenuItem($temporaryItem->getName(), $this->factory); |
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$breadCrumb->setLabel($temporaryItem->getLabel()); |
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if ($temporaryItem->getUri() !== '#' && $temporaryItem->getUri() !== null) { |
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$breadCrumb->setUri($temporaryItem->getUri()); |
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} |
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$items[] = $breadCrumb; |
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$temporaryItem = $temporaryItem->getParent(); |
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} |
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$home = new MenuItem('core.menu.home', $this->factory); |
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$home->setLabel('core.menu.home'); |
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$home->setUri('/' . $locale); |
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$this->items[] = $home; |
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$this->items = array_merge($this->items, array_reverse($items)); |
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} |
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} |
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/** |
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* Grab the menu |
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* |
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* This method will use the ConfigureMenuEvent to get all the items |
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* |
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* @return \Knp\Menu\ItemInterface |
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*/ |
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private function getTheMenu() |
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{ |
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$menu = $this->factory->createItem('root'); |
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$this->eventDispatcher->dispatch( |
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ConfigureMenuEvent::EVENT_NAME, |
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new ConfigureMenuEvent( |
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$this->factory, |
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$menu |
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) |
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); |
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return $menu; |
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} |
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/** |
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* Find an item in the menu based on its URI |
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* |
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* @param MenuItem $menuItem |
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* @param $uri |
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* @return MenuItem|null |
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*/ |
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private function findItemBasedOnUri(MenuItem $menuItem, $uri) |
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{ |
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if ($uri === $menuItem->getUri()) { |
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return $menuItem; |
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} |
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if (!$menuItem->hasChildren()) { |
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return null; |
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} |
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foreach ($menuItem->getChildren() as $child) { |
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$item = $this->findItemBasedOnUri( |
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$child, |
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$uri |
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); |
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if ($item !== null) { |
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return $item; |
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} |
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} |
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return null; |
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} |
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/** |
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* Extract the items for the breadcrumb based on request |
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* |
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* @param RequestStack $requestStack |
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*/ |
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private function extractItemsBasedOnTheRequest(RequestStack $requestStack) |
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{ |
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if (!$this->extractFromRoute) { |
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return; |
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} |
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$this->extractItemsBasedOnUri( |
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$requestStack->getCurrentRequest()->getPathInfo(), |
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$requestStack->getCurrentRequest()->getLocale() |
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); |
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} |
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} |
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This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass.
Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type.