function relation_add_field_load in Relation add 7

Implements hook_field_load().

File

./relation_add.module, line 253

Relation Add module file.

Code

function relation_add_field_load($entity_type, $entities, $field, $instances, $langcode, &$items, $age) {
  $cache =& drupal_static(__FUNCTION__);
  $types = relation_get_types();
  foreach ($entities as $id => $entity) {
    $cache[$entity_type][$instances[$id]['bundle']]['type_settings'] = array();
    $cache[$entity_type][$instances[$id]['bundle']]['relation_types'] = array();
    if (isset($cache[$entity_type][$instances[$id]['bundle']]) && !empty($cache[$entity_type][$instances[$id]['bundle']]['type_settings'])) {
      $type_settings = $cache[$entity_type][$instances[$id]['bundle']]['type_settings'];
    }
    else {
      if (!empty($instances[$id]['settings']['relation_type'])) {
        $type_settings = $instances[$id]['settings']['relation_type'];
        $cache[$entity_type][$instances[$id]['bundle']]['type_settings'] = $type_settings;
      }
      else {
        $type_settings = array();
        $source_types = relation_get_available_types($entity_type, $instances[$id]['bundle']);
        foreach ($source_types as $r_type_id => $r_type) {
          $type_settings[] = $r_type_id;
        }
        $reverse_types = relation_get_available_types($entity_type, $instances[$id]['bundle'], 'target');
        foreach ($reverse_types as $r_type_id => $r_type) {
          $type_settings[] = $r_type_id . ':reverse';
        }
        $cache[$entity_type][$instances[$id]['bundle']]['type_settings'] = $type_settings;
      }
    }
    $target_bundles = array();
    if (isset($instances[$id]['settings']['relation_target_bundles']) && !empty($instances[$id]['settings']['relation_target_bundles'])) {
      foreach ($instances[$id]['settings']['relation_target_bundles'] as $target_bundle) {
        $target_bundle_array = explode(':', $target_bundle);
        $target_bundles[$target_bundle_array[0]][$target_bundle_array[1]] = $target_bundle_array[1];
      }
    }
    else {
      $target_bundles = 'all';
    }
    if (!empty($type_settings)) {
      if (isset($cache[$entity_type][$instances[$id]['bundle']]) && !empty($cache[$entity_type][$instances[$id]['bundle']]['relation_types'])) {
        $relation_types = $cache[$entity_type][$instances[$id]['bundle']]['relation_types'];
      }
      else {
        foreach ($type_settings as $type) {
          $type_array = explode(':', $type);
          $relation_types[$type_array[0]] = $type_array[0];
        }
      }
      $query = relation_query($entity_type, $id);
      if ($relation_types) {
        $query
          ->entityCondition('bundle', $relation_types, 'IN');
      }
      $relation_ids = array_keys($query
        ->execute());

      // Who knows why but field does not like
      // if the delta does not start at 0...
      $items[$id] = array();
      foreach (entity_load('relation', $relation_ids) as $relation) {
        if (!(is_string($target_bundles) && 'all' == $target_bundles)) {
          if ($relation) {

            // Filter out relation items that contain
            // unwanted endpoint bundle types.
            foreach ($relation->endpoints[LANGUAGE_NONE] as $endpoint) {
              if (!($endpoint['entity_type'] == $entity_type && $endpoint['entity_id'] == $id)) {
                if (isset($target_bundles[$endpoint['entity_type']]) && is_array($target_bundles[$endpoint['entity_type']])) {
                  $query = new EntityFieldQuery();
                  $query
                    ->entityCondition('entity_type', $endpoint['entity_type'])
                    ->entityCondition('bundle', $target_bundles[$endpoint['entity_type']], 'IN')
                    ->entityCondition('entity_id', $endpoint['entity_id']);
                  $result = $query
                    ->execute();
                  if (empty($result)) {
                    unset($relation);
                  }
                }
                else {
                  unset($relation);
                }
              }
            }
          }
        }

        // Only add items when they are either not directional,
        // or have their relation type in the field settings.
        if (isset($relation)) {
          $directional = $types[$relation->relation_type]->directional;
          $relation_reverse = TRUE;
          if ($relation->endpoints[LANGUAGE_NONE][0]['entity_id'] == $id && $relation->endpoints[LANGUAGE_NONE][0]['entity_type'] == $entity_type) {
            $relation_reverse = FALSE;
          }
          if (!$directional || $relation_reverse && in_array($relation->relation_type . ':reverse', $type_settings) || !$relation_reverse && in_array($relation->relation_type, $type_settings)) {
            $item = (array) $relation;
            $item['my_entity_id'] = $id;
            $items[$id][] = $item;
          }
        }
      }
    }
  }
}