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class TermLevelItem in Term Level Field 8

Plugin for Term level field type.

Plugin annotation


@FieldType(
  id = "term_level",
  label = @Translation("Term level"),
  description = @Translation("Term level field."),
  category = @Translation("Reference"),
  default_widget = "term_level_widget",
  default_formatter = "term_level_formatter",
  list_class = "\Drupal\Core\Field\EntityReferenceFieldItemList",
)

Hierarchy

Expanded class hierarchy of TermLevelItem

3 files declare their use of TermLevelItem
TermLevelFormatter.php in src/Plugin/Field/FieldFormatter/TermLevelFormatter.php
TermLevelItemNormalizer.php in src/Normalizer/TermLevelItemNormalizer.php
TermLevelWidget.php in src/Plugin/Field/FieldWidget/TermLevelWidget.php

File

src/Plugin/Field/FieldType/TermLevelItem.php, line 23

Namespace

Drupal\term_level\Plugin\Field\FieldType
View source 
class TermLevelItem extends EntityReferenceItem {

  /**
   * {@inheritdoc}
   */
  public static function defaultStorageSettings() {
    return [
      'target_type' => 'taxonomy_term',
      'levels' => '',
    ] + parent::defaultStorageSettings();
  }

  /**
   * {@inheritdoc}
   */
  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
    $properties = parent::propertyDefinitions($field_definition);
    $properties['level'] = DataDefinition::create('integer')
      ->setLabel(t('Level'))
      ->setSetting('unsigned', TRUE);
    return $properties;
  }

  /**
   * {@inheritdoc}
   */
  public static function schema(FieldStorageDefinitionInterface $field_definition) {
    $schema = parent::schema($field_definition);
    $schema['columns']['level'] = [
      'type' => 'int',
      'unsigned' => TRUE,
    ];
    $schema['indexes']['level'] = [
      'level',
    ];
    return $schema;
  }

  /**
   * Extracts levels (level-key => level-label) out of the field settings.
   *
   * Level-label are not yet sanitized.
   *
   * @return array
   *   Extracted levels.
   */
  public static function extractLevels($value) {
    $levels = [];
    $list = explode("\n", $value);
    $list = array_map('trim', $list);
    $list = array_filter($list, 'strlen');
    foreach ($list as $key => $value) {
      if (strpos($value, '|') !== FALSE) {
        list($level_key, $label) = explode('|', $value);
      }
      if (isset($level_key) && isset($level_key)) {
        $levels[$level_key] = $label;
      }
    }
    return $levels;
  }

  /**
   * {@inheritdoc}
   */
  public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
    $element = [];
    $element['levels'] = [
      '#type' => 'textarea',
      '#title' => t('Levels'),
      '#default_value' => $this
        ->getSetting('levels'),
      '#required' => TRUE,
      '#description' => t('Specify the term levels for this field. Enter one level per line, in the format level-key|level-label (level-key must be numeric).'),
      '#element_validate' => [
        [
          $this,
          'validateLevels',
        ],
      ],
      '#disabled' => $has_data,
    ];
    return $element;
  }

  /**
   * Validates levels value.
   */
  public function validateLevels($element, FormStateInterface $form_state) {
    $levels = self::extractLevels($element['#value']);
    if (count($levels) == 0) {
      $form_state
        ->setError($element, $this
        ->t('Please enter valid levels.'));
    }
    foreach ($levels as $key => $label) {
      if (!preg_match('/^\\d+$/', $key)) {
        $form_state
          ->setError($element, $this
          ->t('The level key must be positive integer.'));
        break;
      }
    }
  }

}

Members

Namesort descending Modifiers Type Description Overrides
DependencySerializationTrait::$_entityStorages protected property An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds protected property An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep public function 1
DependencySerializationTrait::__wakeup public function 2
EntityReferenceItem::calculateDependencies public static function Calculates dependencies for field items. Overrides FieldItemBase::calculateDependencies
EntityReferenceItem::calculateStorageDependencies public static function Calculates dependencies for field items on the storage level. Overrides FieldItemBase::calculateStorageDependencies
EntityReferenceItem::defaultFieldSettings public static function Defines the field-level settings for this plugin. Overrides FieldItemBase::defaultFieldSettings 1
EntityReferenceItem::fieldSettingsAjaxProcess public static function Render API callback: Processes the field settings form and allows access to the form state.
EntityReferenceItem::fieldSettingsAjaxProcessElement public static function Adds entity_reference specific properties to AJAX form elements from the field settings form.
EntityReferenceItem::fieldSettingsForm public function Returns a form for the field-level settings. Overrides FieldItemBase::fieldSettingsForm 1
EntityReferenceItem::fieldSettingsFormValidate public static function Form element validation handler; Invokes selection plugin's validation.
EntityReferenceItem::formProcessMergeParent public static function Render API callback: Moves entity_reference specific Form API elements (i.e. 'handler_settings') up a level for easier processing by the validation and submission handlers.
EntityReferenceItem::generateSampleValue public static function Generates placeholder field values. Overrides FieldItemBase::generateSampleValue 1
EntityReferenceItem::getConstraints public function Gets a list of validation constraints. Overrides TypedData::getConstraints
EntityReferenceItem::getPossibleOptions public function Returns an array of possible values with labels for display. Overrides OptionsProviderInterface::getPossibleOptions
EntityReferenceItem::getPossibleValues public function Returns an array of possible values. Overrides OptionsProviderInterface::getPossibleValues
EntityReferenceItem::getPreconfiguredOptions public static function Returns preconfigured field options for a field type. Overrides PreconfiguredFieldUiOptionsInterface::getPreconfiguredOptions 1
EntityReferenceItem::getRandomBundle protected static function Gets a bundle for a given entity type and selection options.
EntityReferenceItem::getSettableOptions public function Returns an array of settable values with labels for display. Overrides OptionsProviderInterface::getSettableOptions
EntityReferenceItem::getSettableValues public function Returns an array of settable values. Overrides OptionsProviderInterface::getSettableValues
EntityReferenceItem::getValue public function Gets the data value. Overrides Map::getValue
EntityReferenceItem::hasNewEntity public function Determines whether the item holds an unsaved entity.
EntityReferenceItem::isEmpty public function Determines whether the data structure is empty. Overrides Map::isEmpty
EntityReferenceItem::mainPropertyName public static function Returns the name of the main property, if any. Overrides FieldItemBase::mainPropertyName
EntityReferenceItem::onChange public function React to changes to a child property or item. Overrides Map::onChange
EntityReferenceItem::onDependencyRemoval public static function Informs the plugin that a dependency of the field will be deleted. Overrides FieldItemBase::onDependencyRemoval
EntityReferenceItem::preSave public function Defines custom presave behavior for field values. Overrides FieldItemBase::preSave 1
EntityReferenceItem::settingsAjax public static function Ajax callback for the handler settings form.
EntityReferenceItem::settingsAjaxSubmit public static function Submit handler for the non-JS case.
EntityReferenceItem::setValue public function Sets the data value. Overrides FieldItemBase::setValue
FieldItemBase::delete public function Defines custom delete behavior for field values. Overrides FieldItemInterface::delete 2
FieldItemBase::deleteRevision public function Defines custom revision delete behavior for field values. Overrides FieldItemInterface::deleteRevision
FieldItemBase::fieldSettingsFromConfigData public static function Returns a settings array in the field type's canonical representation. Overrides FieldItemInterface::fieldSettingsFromConfigData 1
FieldItemBase::fieldSettingsToConfigData public static function Returns a settings array that can be stored as a configuration value. Overrides FieldItemInterface::fieldSettingsToConfigData 1
FieldItemBase::getEntity public function Gets the entity that field belongs to. Overrides FieldItemInterface::getEntity
FieldItemBase::getFieldDefinition public function Gets the field definition. Overrides FieldItemInterface::getFieldDefinition
FieldItemBase::getLangcode public function Gets the langcode of the field values held in the object. Overrides FieldItemInterface::getLangcode
FieldItemBase::getSetting protected function Returns the value of a field setting.
FieldItemBase::getSettings protected function Returns the array of field settings.
FieldItemBase::postSave public function Defines custom post-save behavior for field values. Overrides FieldItemInterface::postSave 2
FieldItemBase::storageSettingsFromConfigData public static function Returns a settings array in the field type's canonical representation. Overrides FieldItemInterface::storageSettingsFromConfigData 2
FieldItemBase::storageSettingsToConfigData public static function Returns a settings array that can be stored as a configuration value. Overrides FieldItemInterface::storageSettingsToConfigData 2
FieldItemBase::view public function Returns a renderable array for a single field item. Overrides FieldItemInterface::view
FieldItemBase::writePropertyValue protected function Different to the parent Map class, we avoid creating property objects as far as possible in order to optimize performance. Thus we just update $this->values if no property object has been created yet. Overrides Map::writePropertyValue
FieldItemBase::__construct public function Constructs a TypedData object given its definition and context. Overrides TypedData::__construct 1
FieldItemBase::__get public function Magic method: Gets a property value. Overrides FieldItemInterface::__get 2
FieldItemBase::__isset public function Magic method: Determines whether a property is set. Overrides FieldItemInterface::__isset
FieldItemBase::__set public function Magic method: Sets a property value. Overrides FieldItemInterface::__set 1
FieldItemBase::__unset public function Magic method: Unsets a property. Overrides FieldItemInterface::__unset
Map::$definition protected property The data definition. Overrides TypedData::$definition
Map::$properties protected property The array of properties.
Map::$values protected property An array of values for the contained properties.
Map::applyDefaultValue public function Applies the default value. Overrides TypedData::applyDefaultValue 4
Map::get public function Gets a property object. Overrides ComplexDataInterface::get
Map::getIterator public function
Map::getProperties public function Gets an array of property objects. Overrides ComplexDataInterface::getProperties
Map::getString public function Returns a string representation of the data. Overrides TypedData::getString
Map::set public function Sets a property value. Overrides ComplexDataInterface::set
Map::toArray public function Returns an array of all property values. Overrides ComplexDataInterface::toArray 1
Map::__clone public function Magic method: Implements a deep clone.
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.
TermLevelItem::defaultStorageSettings public static function Defines the storage-level settings for this plugin. Overrides EntityReferenceItem::defaultStorageSettings
TermLevelItem::extractLevels public static function Extracts levels (level-key => level-label) out of the field settings.
TermLevelItem::propertyDefinitions public static function Defines field item properties. Overrides EntityReferenceItem::propertyDefinitions
TermLevelItem::schema public static function Returns the schema for the field. Overrides EntityReferenceItem::schema
TermLevelItem::storageSettingsForm public function Returns a form for the storage-level settings. Overrides EntityReferenceItem::storageSettingsForm
TermLevelItem::validateLevels public function Validates levels value.
TypedData::$name protected property The property name.
TypedData::$parent protected property The parent typed data object.
TypedData::createInstance public static function Constructs a TypedData object given its definition and context. Overrides TypedDataInterface::createInstance
TypedData::getDataDefinition public function Gets the data definition. Overrides TypedDataInterface::getDataDefinition
TypedData::getName public function Returns the name of a property or item. Overrides TypedDataInterface::getName
TypedData::getParent public function Returns the parent data structure; i.e. either complex data or a list. Overrides TypedDataInterface::getParent
TypedData::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition
TypedData::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
TypedData::getPropertyPath public function Returns the property path of the data. Overrides TypedDataInterface::getPropertyPath
TypedData::getRoot public function Returns the root of the typed data tree. Overrides TypedDataInterface::getRoot
TypedData::setContext public function Sets the context of a property or item via a context aware parent. Overrides TypedDataInterface::setContext
TypedData::validate public function Validates the currently set data value. Overrides TypedDataInterface::validate
TypedDataTrait::$typedDataManager protected property The typed data manager used for creating the data types.
TypedDataTrait::getTypedDataManager public function Gets the typed data manager. 2
TypedDataTrait::setTypedDataManager public function Sets the typed data manager. 2