3 namespace Drupal\Core\Controller;
5 use Drupal\Core\DependencyInjection\ClassResolverInterface;
6 use Drupal\Core\Routing\RouteMatch;
7 use Drupal\Core\Routing\RouteMatchInterface;
8 use Psr\Http\Message\ServerRequestInterface;
9 use Symfony\Bridge\PsrHttpMessage\HttpMessageFactoryInterface;
10 use Symfony\Component\HttpFoundation\Request;
11 use Symfony\Component\HttpKernel\Controller\ControllerResolver as BaseControllerResolver;
14 * ControllerResolver to enhance controllers beyond Symfony's basic handling.
16 * It adds two behaviors:
18 * - When creating a new object-based controller that implements
19 * ContainerAwareInterface, inject the container into it. While not always
20 * necessary, that allows a controller to vary the services it needs at
23 * - By default, a controller name follows the class::method notation. This
24 * class adds the possibility to use a service from the container as a
25 * controller by using a service:method notation (Symfony uses the same
28 class ControllerResolver extends BaseControllerResolver implements ControllerResolverInterface {
33 * @var \Drupal\Core\DependencyInjection\ClassResolverInterface
35 protected $classResolver;
38 * The PSR-7 converter.
40 * @var \Symfony\Bridge\PsrHttpMessage\HttpMessageFactoryInterface
42 protected $httpMessageFactory;
45 * Constructs a new ControllerResolver.
47 * @param \Symfony\Bridge\PsrHttpMessage\HttpMessageFactoryInterface $http_message_factory
48 * The PSR-7 converter.
49 * @param \Drupal\Core\DependencyInjection\ClassResolverInterface $class_resolver
52 public function __construct(HttpMessageFactoryInterface $http_message_factory, ClassResolverInterface $class_resolver) {
53 $this->httpMessageFactory = $http_message_factory;
54 $this->classResolver = $class_resolver;
60 public function getControllerFromDefinition($controller, $path = '') {
61 if (is_array($controller) || (is_object($controller) && method_exists($controller, '__invoke'))) {
65 if (strpos($controller, ':') === FALSE) {
66 if (function_exists($controller)) {
69 elseif (method_exists($controller, '__invoke')) {
70 return new $controller();
74 $callable = $this->createController($controller);
76 if (!is_callable($callable)) {
77 throw new \InvalidArgumentException(sprintf('The controller for URI "%s" is not callable.', $path));
86 public function getController(Request $request) {
87 if (!$controller = $request->attributes->get('_controller')) {
90 return $this->getControllerFromDefinition($controller, $request->getPathInfo());
94 * Returns a callable for the given controller.
96 * @param string $controller
97 * A Controller string.
102 * @throws \LogicException
103 * If the controller cannot be parsed.
105 * @throws \InvalidArgumentException
106 * If the controller class does not exist.
108 protected function createController($controller) {
109 // Controller in the service:method notation.
110 $count = substr_count($controller, ':');
112 list($class_or_service, $method) = explode(':', $controller, 2);
114 // Controller in the class::method notation.
115 elseif (strpos($controller, '::') !== FALSE) {
116 list($class_or_service, $method) = explode('::', $controller, 2);
119 throw new \LogicException(sprintf('Unable to parse the controller name "%s".', $controller));
122 $controller = $this->classResolver->getInstanceFromDefinition($class_or_service);
124 return [$controller, $method];
130 protected function doGetArguments(Request $request, $controller, array $parameters) {
131 // Note this duplicates the deprecation message of
132 // Symfony\Component\HttpKernel\Controller\ControllerResolver::getArguments()
133 // to ensure it is removed in Drupal 9.
134 @trigger_error(sprintf('%s is deprecated as of 8.6.0 and will be removed in 9.0. Inject the "http_kernel.controller.argument_resolver" service instead.', __METHOD__, ArgumentResolverInterface::class), E_USER_DEPRECATED);
135 $attributes = $request->attributes->all();
136 $raw_parameters = $request->attributes->has('_raw_variables') ? $request->attributes->get('_raw_variables') : [];
138 foreach ($parameters as $param) {
139 if (array_key_exists($param->name, $attributes)) {
140 $arguments[] = $attributes[$param->name];
142 elseif (array_key_exists($param->name, $raw_parameters)) {
143 $arguments[] = $attributes[$param->name];
145 elseif ($param->getClass() && $param->getClass()->isInstance($request)) {
146 $arguments[] = $request;
148 elseif ($param->getClass() && $param->getClass()->name === ServerRequestInterface::class) {
149 $arguments[] = $this->httpMessageFactory->createRequest($request);
151 elseif ($param->getClass() && ($param->getClass()->name == RouteMatchInterface::class || is_subclass_of($param->getClass()->name, RouteMatchInterface::class))) {
152 $arguments[] = RouteMatch::createFromRequest($request);
154 elseif ($param->isDefaultValueAvailable()) {
155 $arguments[] = $param->getDefaultValue();
158 if (is_array($controller)) {
159 $repr = sprintf('%s::%s()', get_class($controller[0]), $controller[1]);
161 elseif (is_object($controller)) {
162 $repr = get_class($controller);
168 throw new \RuntimeException(sprintf('Controller "%s" requires that you provide a value for the "$%s" argument (because there is no default value or because there is a non optional argument after this one).', $repr, $param->name));