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<?php |
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namespace AppBundle\Controller\Admin; |
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use AppBundle\Entity\Tag; |
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use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route; |
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use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template; |
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use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method; |
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use Symfony\Bundle\FrameworkBundle\Controller\Controller; |
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use Symfony\Component\Form\Extension\Core\Type\SubmitType; |
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use Symfony\Component\Form\Extension\Core\Type\TextType; |
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use Symfony\Component\HttpFoundation\Request; |
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/** |
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* Class AdminController |
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* @package AppBundle\Controller\Admin |
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* @Route("/admin") |
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*/ |
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class TagController extends Controller |
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{ |
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/** |
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* @Method("GET") |
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* @Route("/tags", name="tagsAdmin") |
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* @Template("AppBundle:admin:tags.html.twig") |
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* |
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* @return Response |
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*/ |
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public function roleAction() |
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{ |
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$em = $this->getDoctrine()->getManager(); |
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$tags = $em->getRepository('AppBundle:Tag') |
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->findAll(); |
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return [ |
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'tags' => $tags, |
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]; |
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} |
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/** |
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* @param Request $request |
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* @Route("/tag/new", name="tagNew") |
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* @Method({"GET", "POST"}) |
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* @Template("AppBundle:admin/form:tag.html.twig") |
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* |
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* @return Response |
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*/ |
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public function editRoleAction(Request $request) |
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{ |
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$em = $this->getDoctrine()->getManager(); |
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$tag = new Tag(); |
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$title = 'Create new tag'; |
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$form = $this->createFormBuilder($tag) |
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->setAction($this->generateUrl('tagNew')) |
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->setMethod('POST') |
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->add('name', TextType::class, array( |
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'attr' => array('placeholder' => '* Tag name'), |
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) |
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) |
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->add('save', SubmitType::class, array('label' => 'Save')) |
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->getForm(); |
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if ($request->getMethod() == 'POST') { |
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$form->handleRequest($request); |
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if ($form->isValid()) { |
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$em->persist($tag); |
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$em->flush(); |
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return $this->redirectToRoute('tagsAdmin'); |
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} |
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} |
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return [ |
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'title' => $title, |
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'form' => $form->createView(), |
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]; |
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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 sub-classes 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 parent class: