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<?php |
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namespace Kunstmaan\PagePartBundle\Twig\Extension; |
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use Doctrine\ORM\EntityManager; |
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use Kunstmaan\PagePartBundle\Entity\PagePartRef; |
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use Kunstmaan\PagePartBundle\Helper\HasPagePartsInterface; |
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use Kunstmaan\PagePartBundle\Helper\PagePartInterface; |
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use Kunstmaan\PagePartBundle\Repository\PagePartRefRepository; |
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use Twig\Environment; |
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use Twig\Extension\AbstractExtension; |
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use Twig\TwigFunction; |
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/** |
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* PagePartTwigExtension |
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* |
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* @final since 5.4 |
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*/ |
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class PagePartTwigExtension extends AbstractExtension |
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{ |
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/** |
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* @var EntityManager |
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*/ |
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protected $em; |
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/** |
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* @param EntityManager $em |
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*/ |
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public function __construct(EntityManager $em) |
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{ |
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$this->em = $em; |
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} |
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/** |
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* @return array |
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*/ |
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public function getFunctions() |
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{ |
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return array( |
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new TwigFunction('render_pageparts', array($this, 'renderPageParts'), array('needs_environment' => true, 'needs_context' => true, 'is_safe' => array('html'))), |
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new TwigFunction('getpageparts', array('needs_environment' => true, $this, 'getPageParts')), |
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new TwigFunction('has_page_parts', [$this, 'hasPageParts']), |
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); |
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} |
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/** |
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* @param Environment $env |
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* @param array $twigContext The twig context |
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* @param HasPagePartsInterface $page The page |
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* @param string $contextName The pagepart context |
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* @param array $parameters Some extra parameters |
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* |
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* @return string |
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*/ |
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View Code Duplication |
public function renderPageParts(Environment $env, array $twigContext, HasPagePartsInterface $page, $contextName = 'main', array $parameters = array()) |
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{ |
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$template = $env->load('@KunstmaanPagePart/PagePartTwigExtension/widget.html.twig'); |
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/* @var $entityRepository PagePartRefRepository */ |
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$pageparts = $this->getPageParts($page, $contextName); |
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$newTwigContext = array_merge($parameters, array( |
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'pageparts' => $pageparts, |
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'page' => $page, |
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)); |
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$newTwigContext = array_merge($newTwigContext, $twigContext); |
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return $template->render($newTwigContext); |
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} |
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/** |
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* @param HasPagePartsInterface $page The page |
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* @param string $context The pagepart context |
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* |
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* @return PagePartInterface[] |
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*/ |
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public function getPageParts(HasPagePartsInterface $page, $context = 'main') |
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{ |
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/** @var $entityRepository PagePartRefRepository */ |
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$entityRepository = $this->em->getRepository(PagePartRef::class); |
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return $entityRepository->getPageParts($page, $context); |
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} |
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/** |
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* @param HasPagePartsInterface $page |
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* @param string $context |
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* |
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* @return bool |
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*/ |
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public function hasPageParts(HasPagePartsInterface $page, $context = 'main') |
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{ |
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return $this->em->getRepository(PagePartRef::class)->hasPageParts($page, $context); |
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} |
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} |
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Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: