Issue #3500204: Use attributes for MyCustomValidator plugin

Related to #3500204

fapiv_example/src/Plugin/FapiValidationValidator/MyCustomValidator.php

@@ -3,19 +3,20 @@
 namespace Drupal\fapiv_example\Plugin\FapiValidationValidator;
 
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\fapi_validation\Attribute\FapiValidationValidator;
 use Drupal\fapi_validation\FapiValidationValidatorsInterface;
 use Drupal\fapi_validation\Validator;
 
 /**
  * Provides a custom validation.
- *
- * Field must have JohnDoe as value.
- *
- * @FapiValidationValidator(
- *   id = "custom_validator",
- *   error_callback = "processError"
- * )
  */
+#[FapiValidationValidator(
+  id: 'custom_validator',
+  label: new TranslatableMarkup('Custom Validator'),
+  description: new TranslatableMarkup('Field must have JohnDoe as value.'),
+  error_message: 'processError.',
+)]
 class MyCustomValidator implements FapiValidationValidatorsInterface {
 
   /**

[igor mashevskyi]

Please, change error_message to error_callback