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<?php |
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namespace Victoire\Bundle\PageBundle\Controller; |
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use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter; |
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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 Symfony\Component\HttpFoundation\JsonResponse; |
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use Symfony\Component\HttpFoundation\Request; |
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use Victoire\Bundle\BusinessPageBundle\Form\BusinessPageType; |
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use Victoire\Bundle\PageBundle\Entity\BasePage; |
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use Victoire\Bundle\PageBundle\Entity\Page; |
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use Victoire\Bundle\PageBundle\Form\PageSettingsType; |
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use Victoire\Bundle\PageBundle\Form\PageType; |
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/** |
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* @Route("/victoire-dcms/page") |
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**/ |
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class PageController extends BasePageController |
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{ |
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protected $routes; |
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/** |
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* Constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->routes = [ |
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'new' => 'victoire_core_page_new', |
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'show' => 'victoire_core_page_show', |
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'settings' => 'victoire_core_page_settings', |
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'detach' => 'victoire_core_page_detach', |
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]; |
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} |
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/** |
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* New page. |
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* |
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* @param bool $isHomepage Is the page a homepage |
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* |
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* @Route("/new", name="victoire_core_page_new", defaults={"isHomepage" : false}) |
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* @Route("/homepage/new", name="victoire_core_homepage_new", defaults={"isHomepage" : true}) |
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* @Template() |
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* |
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* @return JsonResponse |
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*/ |
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public function newAction($isHomepage = false) |
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{ |
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return new JsonResponse(parent::newAction($isHomepage)); |
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} |
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/** |
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* Page settings. |
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* |
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* @param Request $request |
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* @param BasePage $page |
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* |
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* @Route("/{id}/settings", name="victoire_core_page_settings") |
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* @Template() |
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* @ParamConverter("page", class="VictoirePageBundle:BasePage") |
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* |
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* @return JsonResponse The settings |
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*/ |
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public function settingsAction(Request $request, BasePage $page) |
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{ |
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return new JsonResponse(parent::settingsAction($request, $page)); |
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} |
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/** |
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* Page delete. |
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* |
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* @param BasePage $page |
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* |
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* @return JsonResponse |
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* @Route("/{id}/delete", name="victoire_core_page_delete") |
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* @Template() |
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* @ParamConverter("page", class="VictoirePageBundle:BasePage") |
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*/ |
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public function deleteAction(BasePage $page) |
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{ |
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return new JsonResponse(parent::deleteAction($page)); |
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} |
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/** |
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* getNewPageType. |
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* |
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* @return string |
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*/ |
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protected function getNewPageType() |
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{ |
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return PageType::class; |
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} |
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/** |
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* getPageSettingsType. |
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* |
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* @return string |
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*/ |
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protected function getPageSettingsType() |
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{ |
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return PageSettingsType::class; |
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} |
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/** |
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* getBusinessPageType. |
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* |
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* @return string |
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*/ |
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protected function getBusinessPageType() |
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{ |
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return BusinessPageType::class; |
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} |
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/** |
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* getNewPage. |
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* |
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* @return \Victoire\Bundle\PageBundle\Entity\Page |
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*/ |
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protected function getNewPage() |
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{ |
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return new Page(); |
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} |
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/** |
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* getBaseTemplatePath. |
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* |
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* @return string |
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*/ |
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protected function getBaseTemplatePath() |
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{ |
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return 'VictoirePageBundle:Page'; |
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} |
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/** |
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* getRoutes. |
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* |
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* @param string $action |
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* |
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* @return string The route |
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*/ |
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protected function getRoutes($action) |
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{ |
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return $this->routes[$action]; |
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} |
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} |
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If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_function
expects aPost
object, and outputs the author of the post. The base classPost
returns a simple string and outputting a simple string will work just fine. However, the child classBlogPost
which is a sub-type ofPost
instead decided to return anobject
, and is therefore violating the SOLID principles. If aBlogPost
were passed tomy_function
, PHP would not complain, but ultimately fail when executing thestrtoupper
call in its body.