I'm using the diff module for a project, this module has a method inside a Controller that I want to use in a service to reuse code. As this time I'm just calling the method like PluginRevisionController::getRevisionIds() but this give me the message:

Deprecated function: Non-static method Drupal\diff\Controller\PluginRevisionController::getRevisionIds() should not be called statically

So, I want to 'inject' if possible in some way the Controller (I really don't know if this is possible) inside the service to reuse the logic. There is a way to do this?

  • 4
    Bad diff module design, that method should've been in a service.
    – No Sssweat
    Jan 4, 2023 at 21:28

1 Answer 1


You could inject a ClassResolverInterface or ControllerResolverInterface into your service to load a controller instance.

From core.services.yml:

  class: Drupal\Core\Controller\ControllerResolver
  arguments: ['@psr7.http_message_factory', '@class_resolver']
  class: Drupal\Core\DependencyInjection\ClassResolver
    - [setContainer, ['@service_container']]

Both classes will return an instance, just the method names differ.

$controller = $this->classResolver->getInstanceFromDefinition(PluginRevisionController::class);
$controller = $this->controllerResolver->getControllerFromDefinition(PluginRevisionController::class);

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