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- <?php
- namespace Drupal\Core\EventSubscriber;
- use Drupal\Core\Extension\ModuleHandlerInterface;
- use Drupal\Core\Routing\RouteSubscriberBase;
- use Symfony\Component\Routing\RouteCollection;
- /**
- * A route subscriber to remove routes that depend on modules being enabled.
- */
- class ModuleRouteSubscriber extends RouteSubscriberBase {
- /**
- * The module handler.
- *
- * @var \Drupal\Core\Extension\ModuleHandlerInterface
- */
- protected $moduleHandler;
- /**
- * Constructs a ModuleRouteSubscriber object.
- *
- * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
- * The module handler.
- */
- public function __construct(ModuleHandlerInterface $module_handler) {
- $this->moduleHandler = $module_handler;
- }
- /**
- * {@inheritdoc}
- */
- protected function alterRoutes(RouteCollection $collection) {
- foreach ($collection as $name => $route) {
- if ($route->hasRequirement('_module_dependencies')) {
- $modules = $route->getRequirement('_module_dependencies');
- $explode_and = $this->explodeString($modules, '+');
- if (count($explode_and) > 1) {
- foreach ($explode_and as $module) {
- // If any moduleExists() call returns FALSE, remove the route and
- // move on to the next.
- if (!$this->moduleHandler->moduleExists($module)) {
- $collection->remove($name);
- continue 2;
- }
- }
- }
- else {
- // OR condition, exploding on ',' character.
- foreach ($this->explodeString($modules, ',') as $module) {
- if ($this->moduleHandler->moduleExists($module)) {
- continue 2;
- }
- }
- // If no modules are found, and we get this far, remove the route.
- $collection->remove($name);
- }
- }
- }
- }
- /**
- * Explodes a string based on a separator.
- *
- * @param string $string
- * The string to explode.
- * @param string $separator
- * The string separator to explode with.
- *
- * @return array
- * An array of exploded (and trimmed) values.
- */
- protected function explodeString($string, $separator = ',') {
- return array_filter(array_map('trim', explode($separator, $string)));
- }
- }
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