function relation_rules_fetch_endpoint_info_alter in Relation 7

Same name and namespace in other branches

1. 8.2 relation.rules.inc \relation_rules_fetch_endpoint_info_alter()
2. 8 relation.rules.inc \relation_rules_fetch_endpoint_info_alter()

Info alter callback for the fetch_endpoint action.

File

./relation.rules.inc, line 318

Implements the Rules module API for Relation.

Code

function relation_rules_fetch_endpoint_info_alter(&$element_info, $element) {
  $element->settings += array(
    'relation:select' => NULL,
  );
  if ($wrapper = $element
    ->applyDataSelector($element->settings['relation:select'])) {

    // We only make this parameter available after we've selected the relation. This way we
    // can limit the entity type list to only those relative to the selected relation.
    $element_info['parameter']['entity_type'] = array(
      'type' => 'text',
      'label' => t('Entity type'),
      'options list' => 'relation_rules_fetch_endpoint_type_options',
      'description' => t('Select the specific entity type to return.'),
    );
    if (!empty($element->settings['entity_type'])) {

      // Having a number parameter allows us to be flexible between returning a list or a single entity.
      $element_info['parameter']['number'] = array(
        'type' => 'integer',
        'label' => t('How many endpoints to return'),
        'default value' => 1,
        'description' => t('The number of enitites to return that match the above entity type criteria and in what form (single entity or a list). !zero returns a list containing every entity found; The default !one will return a single entity; !gt1 returns a list with maximum the specified number of entities.', array(
          '!zero' => '<strong>0</strong>',
          '!one' => '<strong>1</strong>',
          '!gt1' => '<strong># &gt; 1</strong>',
        )),
      );

      // Set the returned entity type so we can access all the data.
      if (!empty($element->settings['number']) && 1 == $element->settings['number']) {
        $element_info['provides']['endpoint_fetched']['type'] = $element->settings['entity_type'];

        // only one.
      }
      else {
        $element_info['provides']['endpoint_fetched']['type'] = 'list<' . $element->settings['entity_type'] . '>';

        // more then one.
      }
    }
  }
}