class EntityReference_SelectionHandler_Generic_units_unit in Measured Value Field 7

EntityReference_SelectionHandler_Generic class altered for MVF needs.

For MVF only one bundle allowed for referencing per field. In field settings form checkboxes are substituted to radio buttons when selecting bundles if the field, that is being configured, is a MVF one.

Hierarchy

• class \EntityReference_SelectionHandler_Generic implements EntityReference_SelectionHandler
  • class \EntityReference_SelectionHandler_Generic_units_unit

File

includes/EntityReference_SelectionHandler_Generic_units_unit.class.inc, line 15

Definition of EntityReference_SelectionHandler_Generic_units_unit class.

class EntityReference_SelectionHandler_Generic_units_unit extends EntityReference_SelectionHandler_Generic {
  public static function settingsForm($field, $instance) {
    $form = parent::settingsForm($field, $instance);

    // We convert checkboxes to radios only if the field is a MVF field. Some
    // people might want use entity reference stand alone for referencing
    // entity type 'units_unit' and might want to have checkboxes there.
    // In order to decide whether it's a MVF field we have to reload field
    // definition array from Field API, because our $field parameter might be
    // just a mocked up field in MVF module.
    $original_field = field_info_field($field['field_name']);
    $is_mvf_field = in_array($original_field['type'], mvf_field_types());
    if (!$is_mvf_field) {
      return $form;
    }

    // Overriding some properties of target bundles element, we need it to be
    // radio buttons.
    $form['target_bundles'] = array(
      '#type' => 'radios',
      '#required' => TRUE,
      '#description' => NULL,
    ) + $form['target_bundles'];
    if (!isset($form['target_bundles']['#element_validate'])) {
      $form['target_bundles']['#element_validate'] = array();
    }

    // Converting #default_value from format expected by 'checkboxes' to the
    // format expected by 'radios'.
    if (isset($form['target_bundles']['#default_value']) && is_array($form['target_bundles']['#default_value'])) {
      $form['target_bundles']['#default_value'] = array_pop($form['target_bundles']['#default_value']);
    }

    // Since we changed it from checkboxes to radios, we need to keep the value
    // of this element according to the format expected as it was still
    // checkboxes. This validation callback will take care of that.
    array_unshift($form['target_bundles']['#element_validate'], 'mvf_entityreference_selection_target_bundles_validate');
    if (empty($form['target_bundles']['#options'])) {
      $form['target_bundles']['disclaimer'] = array(
        '#markup' => t('Measured Value Field module requires at least one measure imported/added in Units module.'),
      );
    }
    return $form;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
EntityReference_SelectionHandler_Generic::buildEntityFieldQuery	protected	function	Build an EntityFieldQuery to get referencable entities.	1
EntityReference_SelectionHandler_Generic::countReferencableEntities	public	function	Implements EntityReferenceHandler::countReferencableEntities(). Overrides EntityReference_SelectionHandler::countReferencableEntities
EntityReference_SelectionHandler_Generic::ensureBaseTable	public	function	Ensure a base table exists for the query.
EntityReference_SelectionHandler_Generic::entityFieldQueryAlter	public	function	Implements EntityReferenceHandler::entityFieldQueryAlter(). Overrides EntityReference_SelectionHandler::entityFieldQueryAlter	5
EntityReference_SelectionHandler_Generic::getInstance	public static	function	Implements EntityReferenceHandler::getInstance(). Overrides EntityReference_SelectionHandler::getInstance
EntityReference_SelectionHandler_Generic::getLabel	public	function	Implements EntityReferenceHandler::getLabel(). Overrides EntityReference_SelectionHandler::getLabel	1
EntityReference_SelectionHandler_Generic::getReferencableEntities	public	function	Implements EntityReferenceHandler::getReferencableEntities(). Overrides EntityReference_SelectionHandler::getReferencableEntities	1
EntityReference_SelectionHandler_Generic::reAlterQuery	protected	function	Helper method: pass a query to the alteration system again.
EntityReference_SelectionHandler_Generic::validateAutocompleteInput	public	function	Implements EntityReferenceHandler::validateAutocompleteInput(). Overrides EntityReference_SelectionHandler::validateAutocompleteInput
EntityReference_SelectionHandler_Generic::validateReferencableEntities	public	function	Implements EntityReferenceHandler::validateReferencableEntities(). Overrides EntityReference_SelectionHandler::validateReferencableEntities
EntityReference_SelectionHandler_Generic::__construct	protected	function
EntityReference_SelectionHandler_Generic_units_unit::settingsForm	public static	function	Implements EntityReferenceHandler::settingsForm(). Overrides EntityReference_SelectionHandler_Generic::settingsForm