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- <?php
- /**
- * @file
- * Feeds mapping implementation for the Entity reference module
- */
- /**
- * Implements hook_feeds_processor_targets_alter().
- *
- * @see FeedsNodeProcessor::getMappingTargets().
- */
- function entityreference_feeds_processor_targets_alter(&$targets, $entity_type, $bundle_name) {
- foreach (field_info_instances($entity_type, $bundle_name) as $name => $instance) {
- $info = field_info_field($name);
- if ($info['type'] == 'entityreference') {
- $targets[$name] = array(
- 'name' => check_plain($instance['label']),
- 'callback' => 'entityreference_feeds_set_target',
- 'description' => t('The field instance @label of @id', array(
- '@label' => $instance['label'],
- '@id' => $name,
- )),
- );
- }
- }
- }
- /**
- * Entity reference callback for mapping.
- *
- * When the callback is invoked, $target contains the name of the field the
- * user has decided to map to and $value contains the value of the feed item
- * element the user has picked as a source.
- *
- * @param $source
- * A FeedsSource object.
- * @param $entity
- * The entity to map to.
- * @param $target
- * The target key on $entity to map to.
- * @param $value
- * The value to map. MUST be an array.
- * @param $mapping
- * Array of mapping settings for current value.
- * @param $input_format
- * TRUE if an input format should be applied.
- */
- function entityreference_feeds_set_target($source, $entity, $target, $value, $mapping, $input_format = FALSE) {
- // Don't do anything if we weren't given any data.
- if (empty($value)) {
- return;
- }
- // Assume that the passed in value could really be any number of values.
- if (is_array($value)) {
- $values = $value;
- }
- else {
- $values = array($value);
- }
- // Get some useful field information.
- $info = field_info_field($target);
- // Set the language of the field depending on the mapping.
- $language = isset($mapping['language']) ? $mapping['language'] : LANGUAGE_NONE;
- // Iterate over all values.
- $iterator = 0;
- $field = isset($entity->$target) ? $entity->$target : array();
- foreach ($values as $value) {
- // Only process if this value was set for this instance.
- if ($value) {
- // Fetch the entity ID resulting from the mapping table look-up.
- $entity_id = db_query(
- 'SELECT entity_id FROM {feeds_item} WHERE guid = :guid',
- array(':guid' => $value)
- )->fetchField();
- /*
- * Only add a reference to an existing entity ID if there exists a
- * mapping between it and the provided GUID. In cases where no such
- * mapping exists (yet), don't do anything here. There may be a mapping
- * defined later in the CSV file. If so, and the user re-runs the import
- * (as a second pass), we can add this reference then. (The "Update
- * existing nodes" option must be selected during the second pass.)
- */
- if ($entity_id) {
- // Assign the target ID.
- $field[$language][$iterator]['target_id'] = $entity_id;
- }
- else /* there is no $entity_id, no mapping */ {
- /*
- * Feeds stores a hash of every line imported from CSVs in order to
- * make the import process more efficient by ignoring lines it's
- * already seen. We need to short-circuit this process in this case
- * because users may want to re-import the same line as an update later
- * when (and if) a map to a reference exists. So in order to provide
- * this opportunity later, we need to destroy the hash.
- */
- unset($entity->feeds_item->hash);
- }
- }
- // Break out of the loop if this field is single-valued.
- if ($info['cardinality'] == 1) {
- break;
- }
- $iterator++;
- }
- // Add the field to the entity definition.
- $entity->{$target} = $field;
- }
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