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/Drupal 8

public function ControllerResolver::getControllerFromDefinition

public ControllerResolver::getControllerFromDefinition($controller, $path = '')

Returns the Controller instance with a given controller route definition.

As several resolvers can exist for a single application, a resolver must return false when it is not able to determine the controller.

Parameters

mixed $controller: The controller attribute like in $request->attributes->get('_controller')

Return value

mixed|bool A PHP callable representing the Controller, or false if this resolver is not able to determine the controller

Throws

\InvalidArgumentException|\LogicException Thrown if the controller can't be found.

Overrides ControllerResolverInterface::getControllerFromDefinition

See also

\Symfony\Component\HttpKernel\Controller\ControllerResolverInterface::getController()

File

core/lib/Drupal/Core/Controller/ControllerResolver.php, line 60

Class

ControllerResolver
ControllerResolver to enhance controllers beyond Symfony's basic handling.

Namespace

Drupal\Core\Controller

Code

public function getControllerFromDefinition($controller, $path = '') {
  if (is_array($controller) || (is_object($controller) && method_exists($controller, '__invoke'))) {
    return $controller;
  }

  if (strpos($controller, ':') === FALSE) {
    if (function_exists($controller)) {
      return $controller;
    }
    elseif (method_exists($controller, '__invoke')) {
      return new $controller();
    }
  }

  $callable = $this->createController($controller);

  if (!is_callable($callable)) {
    throw new \InvalidArgumentException(sprintf('The controller for URI "%s" is not callable.', $path));
  }

  return $callable;
}

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Licensed under the GNU General Public License, version 2 and later.
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Controller!ControllerResolver.php/function/ControllerResolver::getControllerFromDefinition/8.1.x