Perhaps I'm doing sth. wrong. Might very well be. I've added a field to my entity and changed the form type to the JSONEditor widget. It appears, I can enter stuff. Nice! But when I try to save, I always get this:
Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "serializer". Did you mean this: "serializer.normalizer.json_item.native"? in Drupal\Component\DependencyInjection\Container->get() (line 157 of core/lib/Drupal/Component/DependencyInjection/Container.php).
Drupal\json_field\Plugin\Validation\Constraint\ValidJsonConstraintValidator::create() (Line: 28)
Drupal\Core\DependencyInjection\ClassResolver->getInstanceFromDefinition() (Line: 44)
Drupal\Core\Validation\ConstraintValidatorFactory->getInstance() (Line: 200)
Drupal\Core\TypedData\Validation\RecursiveContextualValidator->validateConstraints() (Line: 154)
Drupal\Core\TypedData\Validation\RecursiveContextualValidator->validateNode() (Line: 164)
Drupal\Core\TypedData\Validation\RecursiveContextualValidator->validateNode() (Line: 164)
Drupal\Core\TypedData\Validation\RecursiveContextualValidator->validateNode() (Line: 106)
Drupal\Core\TypedData\Validation\RecursiveContextualValidator->validate() (Line: 93)
Drupal\Core\TypedData\Validation\RecursiveValidator->validate() (Line: 132)
Drupal\Core\TypedData\TypedData->validate() (Line: 518)
Drupal\Core\Entity\ContentEntityBase->validate() (Line: 188)
Drupal\Core\Entity\ContentEntityForm->validateForm()
call_user_func_array() (Line: 82)
Drupal\Core\Form\FormValidator->executeValidateHandlers() (Line: 275)
Drupal\Core\Form\FormValidator->doValidateForm() (Line: 118)
Drupal\Core\Form\FormValidator->validateForm() (Line: 593)
Drupal\Core\Form\FormBuilder->processForm() (Line: 325)
Drupal\Core\Form\FormBuilder->buildForm() (Line: 73)
Drupal\Core\Controller\FormController->getContentResult()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 627)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 182)
Drupal\drupalx\HttpReroutingMiddleware->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 704)
Drupal\Core\DrupalKernel->handle() (Line: 19)
What could possibly be the reason? Any ideas?
Closed: works as designed
1.3
Code
Ah, I found it: I needed to enable the Drupal core module "serialization". Weird, it's even listed in the info.yml as a dependency. I wonder how I was able to enable json_field without also enabling serialiation. Whatever, I'm closing this bug but perhaps it is helpful for others with the same problem.