protected function EntityResolverManager::getControllerClass in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Entity/EntityResolverManager.php \Drupal\Core\Entity\EntityResolverManager::getControllerClass()

Gets the controller class using route defaults.

By design we cannot support all possible routes, but just the ones which use the defaults provided by core, which are _controller and _form.

Rather than creating an instance of every controller determine the class and method that would be used. This is not possible for the service:method notation as the runtime container does not allow static introspection.

Parameters

array $defaults: The default values provided by the route.

Return value

string|null Returns the controller class, otherwise NULL.

See also

\Drupal\Core\Controller\ControllerResolver::getControllerFromDefinition()

\Drupal\Core\Controller\ClassResolver::getInstanceFromDefinition()

1 call to EntityResolverManager::getControllerClass()

EntityResolverManager::setRouteOptions in core/lib/Drupal/Core/Entity/EntityResolverManager.php

Set the upcasting route objects.

File

core/lib/Drupal/Core/Entity/EntityResolverManager.php, line 75

Class

EntityResolverManager

Sets the entity route parameter converter options automatically.

Namespace

Drupal\Core\Entity

Code

protected function getControllerClass(array $defaults) {
  $controller = NULL;
  if (isset($defaults['_controller'])) {
    $controller = $defaults['_controller'];
  }
  if (isset($defaults['_form'])) {
    $controller = $defaults['_form'];

    // Check if the class exists and if so use the buildForm() method from the
    // interface.
    if (class_exists($controller)) {
      return [
        $controller,
        'buildForm',
      ];
    }
  }
  if (strpos($controller, ':') === FALSE) {
    if (method_exists($controller, '__invoke')) {
      return [
        $controller,
        '__invoke',
      ];
    }
    if (function_exists($controller)) {
      return $controller;
    }
    return NULL;
  }
  $count = substr_count($controller, ':');
  if ($count == 1) {

    // Controller in the service:method notation. Get the information from the
    // service. This is dangerous as the controller could depend on services
    // that could not exist at this point. There is however no other way to
    // do it, as the container does not allow static introspection.
    list($class_or_service, $method) = explode(':', $controller, 2);
    return [
      $this->classResolver
        ->getInstanceFromDefinition($class_or_service),
      $method,
    ];
  }
  elseif (strpos($controller, '::') !== FALSE) {

    // Controller in the class::method notation.
    return explode('::', $controller, 2);
  }
  return NULL;
}