class RouteInfoController

class RouteInfoController extends ControllerBase {
    
    /**
     * The route provider.
     *
     * @var \Drupal\Core\Routing\RouteProviderInterface
     */
    protected $routeProvider;
    
    /**
     * The router service.
     *
     * @var \Symfony\Component\Routing\RouterInterface
     */
    protected $router;
    
    /**
     * The dumper service.
     *
     * @var \Drupal\devel\DevelDumperManagerInterface
     */
    protected $dumper;
    
    /**
     * RouterInfoController constructor.
     *
     * @param \Drupal\Core\Routing\RouteProviderInterface $provider
     *   The route provider.
     * @param \Symfony\Component\Routing\RouterInterface $router
     *   The router service.
     * @param \Drupal\devel\DevelDumperManagerInterface $dumper
     *   The dumper service.
     */
    public function __construct(RouteProviderInterface $provider, RouterInterface $router, DevelDumperManagerInterface $dumper) {
        $this->routeProvider = $provider;
        $this->router = $router;
        $this->dumper = $dumper;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('router.route_provider'), $container->get('router.no_access_checks'), $container->get('devel.dumper'));
    }
    
    /**
     * Builds the routes overview page.
     *
     * @return array
     *   A render array as expected by the renderer.
     */
    public function routeList() {
        $headers = [
            $this->t('Route Name'),
            $this->t('Path'),
            $this->t('Allowed Methods'),
            $this->t('Operations'),
        ];
        $rows = [];
        foreach ($this->routeProvider
            ->getAllRoutes() as $route_name => $route) {
            $row['name'] = [
                'data' => $route_name,
                'class' => 'table-filter-text-source',
            ];
            $row['path'] = [
                'data' => $route->getPath(),
                'class' => 'table-filter-text-source',
            ];
            $row['methods']['data'] = [
                '#theme' => 'item_list',
                '#items' => $route->getMethods(),
                '#empty' => $this->t('ANY'),
                '#context' => [
                    'list_style' => 'comma-list',
                ],
            ];
            // We cannot resolve routes with dynamic parameters from route path. For
            // these routes we pass the route name.
            // @see ::routeItem()
            if (strpos($route->getPath(), '{') !== FALSE) {
                $parameters = [
                    'query' => [
                        'route_name' => $route_name,
                    ],
                ];
            }
            else {
                $parameters = [
                    'query' => [
                        'path' => $route->getPath(),
                    ],
                ];
            }
            $row['operations']['data'] = [
                '#type' => 'operations',
                '#links' => [
                    'devel' => [
                        'title' => $this->t('Devel'),
                        'url' => Url::fromRoute('devel.route_info.item', [], $parameters),
                    ],
                ],
            ];
            $rows[] = $row;
        }
        $output['#attached']['library'][] = 'system/drupal.system.modules';
        $output['filters'] = [
            '#type' => 'container',
            '#attributes' => [
                'class' => [
                    'table-filter',
                    'js-show',
                ],
            ],
        ];
        $output['filters']['name'] = [
            '#type' => 'search',
            '#title' => $this->t('Search'),
            '#size' => 30,
            '#placeholder' => $this->t('Enter route name or path'),
            '#attributes' => [
                'class' => [
                    'table-filter-text',
                ],
                'data-table' => '.devel-filter-text',
                'autocomplete' => 'off',
                'title' => $this->t('Enter a part of the route name or path to filter by.'),
            ],
        ];
        $output['routes'] = [
            '#type' => 'table',
            '#header' => $headers,
            '#rows' => $rows,
            '#empty' => $this->t('No routes found.'),
            '#sticky' => TRUE,
            '#attributes' => [
                'class' => [
                    'devel-route-list',
                    'devel-filter-text',
                ],
            ],
        ];
        return $output;
    }
    
    /**
     * Returns a render array representation of the route object.
     *
     * The method tries to resolve the route from the 'path' or the 'route_name'
     * query string value if available. If no route is retrieved from the query
     * string parameters it fallbacks to the current route.
     *
     * @param \Symfony\Component\HttpFoundation\Request $request
     *   The request object.
     * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
     *   The route match.
     *
     * @return array
     *   A render array as expected by the renderer.
     */
    public function routeDetail(Request $request, RouteMatchInterface $route_match) {
        $route = NULL;
        // Get the route object from the path query string if available.
        if ($path = $request->query
            ->get('path')) {
            try {
                $route = $this->router
                    ->match($path);
            } catch (\Exception $e) {
                drupal_set_message($this->t("Unable to load route for url '%url'", [
                    '%url' => $path,
                ]), 'warning');
            }
        }
        // Get the route object from the route name query string if available and
        // the route is not retrieved by path.
        if ($route === NULL && ($route_name = $request->query
            ->get('route_name'))) {
            try {
                $route = $this->routeProvider
                    ->getRouteByName($route_name);
            } catch (\Exception $e) {
                drupal_set_message($this->t("Unable to load route '%name'", [
                    '%name' => $route_name,
                ]), 'warning');
            }
        }
        // No route retrieved from path or name specified, get the current route.
        if ($route === NULL) {
            $route = $route_match->getRouteObject();
        }
        return $this->dumper
            ->exportAsRenderable($route);
    }

}