ModuleRouteSubscriber::alterRoutes

protected ModuleRouteSubscriber::alterRoutes(RouteCollection $collection)

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);
      }
    }
  }
}