class MustBeEmptyFieldValidationRule in Field Validation 8
MustBeEmptyFieldValidationRule.
Plugin annotation
@FieldValidationRule(
  id = "must_be_empty_field_validation_rule",
  label = @Translation("Must be empty"),
  description = @Translation("Verifies that a specified textfield remains empty - Recommended use case: used as an anti-spam measure by hiding the element with CSS.")
)
Hierarchy
- class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait- class \Drupal\field_validation\FieldValidationRuleBase implements ContainerFactoryPluginInterface, FieldValidationRuleInterface- class \Drupal\field_validation\ConfigurableFieldValidationRuleBase implements ConfigurableFieldValidationRuleInterface- class \Drupal\field_validation\Plugin\FieldValidationRule\MustBeEmptyFieldValidationRule
 
 
- class \Drupal\field_validation\ConfigurableFieldValidationRuleBase implements ConfigurableFieldValidationRuleInterface
 
- class \Drupal\field_validation\FieldValidationRuleBase implements ContainerFactoryPluginInterface, FieldValidationRuleInterface
 
- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
Expanded class hierarchy of MustBeEmptyFieldValidationRule
File
- src/Plugin/ FieldValidationRule/ MustBeEmptyFieldValidationRule.php, line 18 
Namespace
Drupal\field_validation\Plugin\FieldValidationRuleView source
class MustBeEmptyFieldValidationRule extends ConfigurableFieldValidationRuleBase {
  /**
   * {@inheritdoc}
   */
  public function addFieldValidationRule(FieldValidationRuleSetInterface $field_validation_rule_set) {
    return TRUE;
  }
  /**
   * {@inheritdoc}
   */
  public function getSummary() {
    $summary = parent::getSummary();
    return $summary;
  }
  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [];
  }
  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    return $form;
  }
  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
    parent::submitConfigurationForm($form, $form_state);
  }
  public function validate($params) {
    $value = isset($params['value']) ? $params['value'] : '';
    $rule = isset($params['rule']) ? $params['rule'] : null;
    $context = isset($params['context']) ? $params['context'] : null;
    $settings = array();
    if (!empty($rule) && !empty($rule->configuration)) {
      $settings = $rule->configuration;
    }
    $pattern = isset($settings['setting']) ? $settings['setting'] : '';
    //$settings = $this->rule->settings;
    if ($value != '') {
      $context
        ->addViolation($rule
        ->getErrorMessage());
    }
  }
}Members
| Name   | Modifiers | Type | Description | Overrides | 
|---|---|---|---|---|
| ConfigurableFieldValidationRuleBase:: | public | function | Form validation handler. Overrides PluginFormInterface:: | |
| DependencySerializationTrait:: | protected | property | An array of entity type IDs keyed by the property name of their storages. | |
| DependencySerializationTrait:: | protected | property | An array of service IDs keyed by property name used for serialization. | |
| DependencySerializationTrait:: | public | function | 1 | |
| DependencySerializationTrait:: | public | function | 2 | |
| FieldValidationRuleBase:: | protected | property | The column of the FieldValidationRule. | |
| FieldValidationRuleBase:: | protected | property | The error message of the FieldValidationRule. | |
| FieldValidationRuleBase:: | protected | property | The field name of the FieldValidationRule. | |
| FieldValidationRuleBase:: | protected | property | A logger instance. | |
| FieldValidationRuleBase:: | protected | property | The title of the FieldValidationRule. | |
| FieldValidationRuleBase:: | protected | property | The FieldValidationRule ID. | |
| FieldValidationRuleBase:: | protected | property | The weight of the FieldValidationRule. | |
| FieldValidationRuleBase:: | public | function | Calculates dependencies for the configured plugin. Overrides DependentPluginInterface:: | |
| FieldValidationRuleBase:: | public static | function | Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the column of the field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Gets this plugin's configuration. Overrides ConfigurableInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the extension the derivative would have have after adding this
field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the error message of the field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the field name of the field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the title of the field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the unique ID representing the field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the weight of the field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Returns the field_validation_rule label. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Sets the column for this field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Sets the configuration for this plugin instance. Overrides ConfigurableInterface:: | |
| FieldValidationRuleBase:: | public | function | Sets the error message for this field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Sets the field name for this field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Sets the title for this field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Sets the weight for this field_validation_rule. Overrides FieldValidationRuleInterface:: | |
| FieldValidationRuleBase:: | public | function | Constructs a \Drupal\Component\Plugin\PluginBase object. Overrides PluginBase:: | |
| MessengerTrait:: | protected | property | The messenger. | 29 | 
| MessengerTrait:: | public | function | Gets the messenger. | 29 | 
| MessengerTrait:: | public | function | Sets the messenger. | |
| MustBeEmptyFieldValidationRule:: | public | function | Applies a field_validation_rule to the field_validation_rule_set. Overrides FieldValidationRuleInterface:: | |
| MustBeEmptyFieldValidationRule:: | public | function | Form constructor. Overrides PluginFormInterface:: | |
| MustBeEmptyFieldValidationRule:: | public | function | Gets default configuration for this plugin. Overrides FieldValidationRuleBase:: | |
| MustBeEmptyFieldValidationRule:: | public | function | Returns a render array summarizing the configuration of the field_validation_rule. Overrides FieldValidationRuleBase:: | |
| MustBeEmptyFieldValidationRule:: | public | function | Form submission handler. Overrides ConfigurableFieldValidationRuleBase:: | |
| MustBeEmptyFieldValidationRule:: | public | function | Overrides FieldValidationRuleBase:: | |
| PluginBase:: | protected | property | Configuration information passed into the plugin. | 1 | 
| PluginBase:: | protected | property | The plugin implementation definition. | 1 | 
| PluginBase:: | protected | property | The plugin_id. | |
| PluginBase:: | constant | A string which is used to separate base plugin IDs from the derivative ID. | ||
| PluginBase:: | public | function | Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface:: | |
| PluginBase:: | public | function | Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface:: | |
| PluginBase:: | public | function | Gets the definition of the plugin implementation. Overrides PluginInspectionInterface:: | 3 | 
| PluginBase:: | public | function | Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface:: | |
| PluginBase:: | public | function | Determines if the plugin is configurable. | |
| StringTranslationTrait:: | protected | property | The string translation service. | 1 | 
| StringTranslationTrait:: | protected | function | Formats a string containing a count of items. | |
| StringTranslationTrait:: | protected | function | Returns the number of plurals supported by a given language. | |
| StringTranslationTrait:: | protected | function | Gets the string translation service. | |
| StringTranslationTrait:: | public | function | Sets the string translation service to use. | 2 | 
| StringTranslationTrait:: | protected | function | Translates a string to the current language or to a given language. | 
