Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony CMF package.
Chris@0:  *
Chris@0:  * (c) 2011-2015 Symfony CMF
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Cmf\Component\Routing\Enhancer;
Chris@0: 
Chris@0: use Symfony\Component\HttpFoundation\Request;
Chris@0: use Symfony\Cmf\Component\Routing\RouteObjectInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * This enhancer sets the content to target field if the route provides content.
Chris@0:  *
Chris@0:  * Only works with RouteObjectInterface routes that can return a referenced
Chris@0:  * content.
Chris@0:  *
Chris@0:  * @author David Buchmann
Chris@0:  */
Chris@0: class RouteContentEnhancer implements RouteEnhancerInterface
Chris@0: {
Chris@0:     /**
Chris@0:      * @var string field for the route class
Chris@0:      */
Chris@0:     protected $routefield;
Chris@0:     /**
Chris@0:      * @var string field to write hashmap lookup result into
Chris@0:      */
Chris@0:     protected $target;
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $routefield the field name of the route class
Chris@0:      * @param string $target     the field name to set from the map
Chris@0:      * @param array  $hashmap    the map of class names to field values
Chris@0:      */
Chris@0:     public function __construct($routefield, $target)
Chris@0:     {
Chris@0:         $this->routefield = $routefield;
Chris@0:         $this->target = $target;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * If the route has a non-null content and if that content class is in the
Chris@0:      * injected map, returns that controller.
Chris@0:      *
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function enhance(array $defaults, Request $request)
Chris@0:     {
Chris@0:         if (isset($defaults[$this->target])) {
Chris@0:             // no need to do anything
Chris@0:             return $defaults;
Chris@0:         }
Chris@0: 
Chris@0:         if (!isset($defaults[$this->routefield])
Chris@0:             || !$defaults[$this->routefield] instanceof RouteObjectInterface
Chris@0:         ) {
Chris@0:             // we can't determine the content
Chris@0:             return $defaults;
Chris@0:         }
Chris@0:         /** @var $route RouteObjectInterface */
Chris@0:         $route = $defaults[$this->routefield];
Chris@0: 
Chris@0:         $content = $route->getContent();
Chris@0:         if (!$content) {
Chris@0:             // we have no content
Chris@0:             return $defaults;
Chris@0:         }
Chris@0:         $defaults[$this->target] = $content;
Chris@0: 
Chris@0:         return $defaults;
Chris@0:     }
Chris@0: }