class MeasurementItem in Physical Fields 8

Plugin implementation of the 'physical_measurement' field type.

Plugin annotation


@FieldType(
  id = "physical_measurement",
  label = @Translation("Measurement"),
  description = @Translation("This field stores a number and a unit of measure."),
  category = @Translation("Physical"),
  default_widget = "physical_measurement_default",
  default_formatter = "physical_measurement_default"
)

Hierarchy

class \Drupal\Core\TypedData\TypedData implements PluginInspectionInterface, TypedDataInterface uses DependencySerializationTrait, StringTranslationTrait, TypedDataTrait
- class \Drupal\Core\TypedData\Plugin\DataType\Map implements \Drupal\Core\TypedData\Plugin\DataType\IteratorAggregate, ComplexDataInterface
  - class \Drupal\Core\Field\FieldItemBase implements FieldItemInterface
    class \Drupal\physical\Plugin\Field\FieldType\MeasurementItem implements PreconfiguredFieldUiOptionsInterface

Expanded class hierarchy of MeasurementItem

File

src/Plugin/Field/FieldType/MeasurementItem.php, line 25

Namespace

Drupal\physical\Plugin\Field\FieldType

View source

class MeasurementItem extends FieldItemBase implements PreconfiguredFieldUiOptionsInterface {

  /**
   * {@inheritdoc}
   */
  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
    $properties['number'] = DataDefinition::create('string')
      ->setLabel(t('Number'));
    $properties['unit'] = DataDefinition::create('string')
      ->setLabel(t('Unit'));
    return $properties;
  }

  /**
   * {@inheritdoc}
   */
  public static function schema(FieldStorageDefinitionInterface $field_definition) {
    return [
      'columns' => [
        'number' => [
          'description' => 'The number.',
          'type' => 'numeric',
          'precision' => 19,
          'scale' => 6,
        ],
        'unit' => [
          'description' => 'The unit.',
          'type' => 'varchar',
          'length' => '255',
          'default' => '',
        ],
      ],
    ];
  }

  /**
   * {@inheritdoc}
   */
  public static function mainPropertyName() {
    return NULL;
  }

  /**
   * {@inheritdoc}
   */
  public function getConstraints() {
    $constraint_manager = $this
      ->getTypedDataManager()
      ->getValidationConstraintManager();
    $constraints = parent::getConstraints();
    $constraints[] = $constraint_manager
      ->create('ComplexData', [
      'number' => [
        'Regex' => [
          'pattern' => '/^[+-]?((\\d+(\\.\\d*)?)|(\\.\\d+))$/i',
        ],
      ],
    ]);
    return $constraints;
  }

  /**
   * {@inheritdoc}
   */
  public function isEmpty() {
    return $this->number === NULL || $this->number === '' || empty($this->unit);
  }

  /**
   * {@inheritdoc}
   */
  public function setValue($values, $notify = TRUE) {

    // Allow callers to pass a Measurement value object as the field item value.
    if ($values instanceof Measurement) {
      $measurement = $values;
      $values = [
        'number' => $measurement
          ->getNumber(),
        'unit' => $measurement
          ->getUnit(),
      ];
    }
    parent::setValue($values, $notify);
  }

  /**
   * {@inheritdoc}
   */
  public static function defaultStorageSettings() {
    return [
      'measurement_type' => MeasurementType::LENGTH,
    ] + parent::defaultStorageSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
    $element['measurement_type'] = [
      '#type' => 'radios',
      '#title' => t('Measurement type'),
      '#options' => MeasurementType::getLabels(),
      '#default_value' => $this
        ->getSetting('measurement_type'),
      '#required' => TRUE,
      '#disabled' => $has_data,
    ];
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public static function getPreconfiguredOptions() {
    $options = [];

    // Expose an individual field in the Field UI for each measurement type.
    foreach (MeasurementType::getLabels() as $type => $label) {
      $options[$type] = [
        'label' => $label,
        'field_storage_config' => [
          'settings' => [
            'measurement_type' => $type,
          ],
        ],
      ];
    }
    return $options;
  }

  /**
   * Gets the Measurement value object for the current field item.
   *
   * @return \Drupal\physical\Measurement
   *   A subclass of Measurement (Length, Volume, etc).
   */
  public function toMeasurement() {
    $class = MeasurementType::getClass($this
      ->getSetting('measurement_type'));
    return new $class($this->number, $this->unit);
  }

}

Members

Name	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
FieldItemBase::calculateDependencies	public static	function	Calculates dependencies for field items. Overrides FieldItemInterface::calculateDependencies	2
FieldItemBase::calculateStorageDependencies	public static	function	Calculates dependencies for field items on the storage level. Overrides FieldItemInterface::calculateStorageDependencies	1
FieldItemBase::defaultFieldSettings	public static	function	Defines the field-level settings for this plugin. Overrides FieldItemInterface::defaultFieldSettings	7
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::fieldSettingsForm	public	function	Returns a form for the field-level settings. Overrides FieldItemInterface::fieldSettingsForm	7
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::generateSampleValue	public static	function	Generates placeholder field values. Overrides FieldItemInterface::generateSampleValue	18
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::onDependencyRemoval	public static	function	Informs the plugin that a dependency of the field will be deleted. Overrides FieldItemInterface::onDependencyRemoval	1
FieldItemBase::postSave	public	function	Defines custom post-save behavior for field values. Overrides FieldItemInterface::postSave	2
FieldItemBase::preSave	public	function	Defines custom presave behavior for field values. Overrides FieldItemInterface::preSave	7
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::getValue	public	function	Gets the data value. Overrides TypedData::getValue	1
Map::onChange	public	function	Overrides TraversableTypedDataInterface::onChange	4
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.
MeasurementItem::defaultStorageSettings	public static	function	Defines the storage-level settings for this plugin. Overrides FieldItemBase::defaultStorageSettings
MeasurementItem::getConstraints	public	function	Gets a list of validation constraints. Overrides TypedData::getConstraints
MeasurementItem::getPreconfiguredOptions	public static	function	Returns preconfigured field options for a field type. Overrides PreconfiguredFieldUiOptionsInterface::getPreconfiguredOptions
MeasurementItem::isEmpty	public	function	Determines whether the data structure is empty. Overrides Map::isEmpty
MeasurementItem::mainPropertyName	public static	function	Returns the name of the main property, if any. Overrides FieldItemBase::mainPropertyName
MeasurementItem::propertyDefinitions	public static	function	Defines field item properties. Overrides FieldItemInterface::propertyDefinitions
MeasurementItem::schema	public static	function	Returns the schema for the field. Overrides FieldItemInterface::schema
MeasurementItem::setValue	public	function	Sets the data value. Overrides FieldItemBase::setValue
MeasurementItem::storageSettingsForm	public	function	Returns a form for the storage-level settings. Overrides FieldItemBase::storageSettingsForm
MeasurementItem::toMeasurement	public	function	Gets the Measurement value object for the current field item.
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.
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

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class MeasurementItem in Physical Fields 8

Plugin annotation

Hierarchy

File

Namespace

Members

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