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<?php
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/**
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* @file
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* On behalf implementation of Feeds mapping API for taxonomy.module.
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*/
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/**
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* Search by term name.
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*/
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define('FEEDS_TAXONOMY_SEARCH_TERM_NAME', 0);
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/**
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* Search by term id.
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*/
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define('FEEDS_TAXONOMY_SEARCH_TERM_ID', 1);
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/**
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* Search by GUID.
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*/
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define('FEEDS_TAXONOMY_SEARCH_TERM_GUID', 2);
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/**
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* Implements hook_feeds_parser_sources_alter().
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*/
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function taxonomy_feeds_parser_sources_alter(array &$sources, $content_type) {
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if (!empty($content_type)) {
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foreach (taxonomy_get_vocabularies($content_type) as $vocabulary) {
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$sources['parent:taxonomy:' . $vocabulary->machine_name] = array(
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'name' => t('Feed node: Taxonomy: @vocabulary', array('@vocabulary' => $vocabulary->name)),
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'description' => t('Taxonomy terms from feed node in given vocabulary.'),
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'callback' => 'taxonomy_feeds_get_source',
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);
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}
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}
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}
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/**
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* Callback, returns taxonomy from feed node.
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*/
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function taxonomy_feeds_get_source(FeedsSource $source, FeedsParserResult $result, $key) {
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if ($node = node_load($source->feed_nid)) {
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$terms = taxonomy_feeds_node_get_terms($node);
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$vocabularies = taxonomy_vocabulary_load_multiple(array(), array('machine_name' => str_replace('parent:taxonomy:', '', $key)));
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$vocabulary = array_shift($vocabularies);
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$result = array();
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foreach ($terms as $tid => $term) {
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if ($term->vid == $vocabulary->vid) {
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$result[] = new FeedsTermElement($term);
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}
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}
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return $result;
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}
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}
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/**
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* Implements hook_feeds_processor_targets().
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*/
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function taxonomy_feeds_processor_targets($entity_type, $bundle_name) {
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$targets = array();
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foreach (field_info_instances($entity_type, $bundle_name) as $name => $instance) {
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$info = field_info_field($name);
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if ($info['type'] == 'taxonomy_term_reference') {
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$targets[$name] = array(
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'name' => check_plain($instance['label']),
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'callback' => 'taxonomy_feeds_set_target',
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'description' => t('The @label field of the entity.', array('@label' => $instance['label'])),
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'summary_callbacks' => array('taxonomy_feeds_summary_callback'),
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'form_callbacks' => array('taxonomy_feeds_form_callback'),
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);
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}
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}
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if ($entity_type == 'taxonomy_term') {
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$targets['tid']['name'] = t('Term id');
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$targets['tid']['description'] = t('The tid of the taxonomy term. NOTE: use this feature with care, node ids are usually assigned by Drupal.');
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unset($targets['vocabulary']);
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}
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return $targets;
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}
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/**
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* Callback for mapping taxonomy terms.
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*/
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function taxonomy_feeds_set_target(FeedsSource $source, $entity, $target, array $terms, array $mapping) {
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$language = $mapping['language'];
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// Add in default values.
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$mapping += array(
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'term_search' => FEEDS_TAXONOMY_SEARCH_TERM_NAME,
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'autocreate' => FALSE,
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);
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$info = field_info_field($target);
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$cache = &drupal_static(__FUNCTION__);
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if (!isset($cache['allowed_values'][$target])) {
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$cache['allowed_values'][$target] = taxonomy_allowed_values($info);
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}
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if (!isset($cache['allowed_vocabularies'][$target])) {
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foreach ($info['settings']['allowed_values'] as $tree) {
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if ($vocabulary = taxonomy_vocabulary_machine_name_load($tree['vocabulary'])) {
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$vid = $vocabulary->vid;
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$cache['allowed_vocabularies'][$target][$vid] = $vocabulary->machine_name;
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$cache['vocabulary_targets'][$vid][] = $target;
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}
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}
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}
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// Some kind of configuration issue. Perhaps the vocabulary was deleted.
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// Nothing we can do about it.
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if (empty($cache['allowed_vocabularies'][$target])) {
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return;
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}
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$query = new EntityFieldQuery();
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$query->entityCondition('entity_type', 'taxonomy_term')
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->entityCondition('bundle', $cache['allowed_vocabularies'][$target])
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->range(0, 1);
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$field = isset($entity->$target) ? $entity->$target : array($language => array());
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if (!isset($field[$language])) {
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$field[$language] = array();
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}
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// Allow for multiple mappings to the same target.
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$delta = count($field[$language]);
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// Iterate over all values.
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foreach ($terms as $term) {
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if ($info['cardinality'] == $delta) {
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break;
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}
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$tid = FALSE;
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// FeedsTermElement already is a term.
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if ($term instanceof FeedsTermElement) {
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$tid = $term->tid;
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}
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else {
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switch ($mapping['term_search']) {
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// Lookup by name.
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case FEEDS_TAXONOMY_SEARCH_TERM_NAME:
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$term = trim($term);
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$name_query = clone $query;
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if (strlen($term) && $tids = $name_query->propertyCondition('name', $term)->execute()) {
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// Find the first allowed term.
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foreach ($tids['taxonomy_term'] as $possible_term) {
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if (isset($cache['allowed_values'][$target][$possible_term->tid])) {
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$tid = $possible_term->tid;
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break;
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}
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}
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}
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elseif ($mapping['autocreate'] && strlen($term)) {
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$term_vid = key($cache['allowed_vocabularies'][$target]);
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$term = (object) array(
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'name' => drupal_substr($term, 0, 255),
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'vid' => $term_vid,
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'vocabulary_machine_name' => reset($cache['allowed_vocabularies'][$target]),
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);
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// Set language if the taxonomy is multilingual.
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if ($language !== LANGUAGE_NONE) {
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$info = entity_get_info('taxonomy_term');
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if (!empty($info['entity keys']['language'])) {
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$term->{$info['entity keys']['language']} = $language;
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}
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}
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taxonomy_term_save($term);
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$tid = $term->tid;
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// Add to the list of allowed values.
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$cache['allowed_values'][$target][$tid] = $term->name;
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// Invalidate caches for other fields targeting the same vocabulary.
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foreach ($cache['vocabulary_targets'][$term_vid] as $clear_target) {
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if ($clear_target !== $target) {
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unset($cache['allowed_values'][$clear_target]);
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}
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}
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}
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break;
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// Lookup by tid.
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case FEEDS_TAXONOMY_SEARCH_TERM_ID:
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if (is_numeric($term)) {
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$tid = (int) $term;
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}
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break;
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// Lookup by GUID.
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case FEEDS_TAXONOMY_SEARCH_TERM_GUID:
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$tid = taxonomy_feeds_term_lookup_term_by_guid($term);
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break;
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}
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}
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if ($tid && isset($cache['allowed_values'][$target][$tid])) {
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$field[$language][] = array('tid' => $tid);
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$delta++;
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}
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}
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$entity->$target = $field;
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}
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/**
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* Finds all terms associated with the given node, within one vocabulary.
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*/
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function taxonomy_feeds_node_get_terms($node, $key = 'tid') {
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$terms = &drupal_static(__FUNCTION__);
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if (!isset($terms[$node->nid][$key])) {
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// Get tids from all taxonomy_term_reference fields.
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$tids = array();
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$fields = field_info_fields();
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foreach ($fields as $field_name => $field) {
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if ($field['type'] == 'taxonomy_term_reference' && field_info_instance('node', $field_name, $node->type)) {
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if (($items = field_get_items('node', $node, $field_name)) && is_array($items)) {
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$tids = array_merge($tids, array_map('_taxonomy_feeds_extract_tid', $items));
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}
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}
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}
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// Load terms and cache them in static var.
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$curr_terms = taxonomy_term_load_multiple($tids);
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$terms[$node->nid][$key] = array();
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foreach ($curr_terms as $term) {
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$terms[$node->nid][$key][$term->$key] = $term;
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}
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}
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return $terms[$node->nid][$key];
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}
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/**
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* Extracts tid from array item returned by field_get_items().
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*
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* @param array $item
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* Tid information in the form of a single element array
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* (key == 'tid', value == tid we're looking for)
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*
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* @return int
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* Term id extracted from $item.
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*
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* @see taxonomy_feeds_node_get_terms()
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* @see field_get_items()
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*/
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function _taxonomy_feeds_extract_tid($item) {
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return $item['tid'];
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}
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/**
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* Looks up a term by GUID, assumes SQL storage backend.
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*
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* @param string $guid
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* The Feeds GUID to compare against.
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*
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* @return int|false
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* The term id, or FALSE if one was not found.
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*/
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function taxonomy_feeds_term_lookup_term_by_guid($guid) {
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return db_select('feeds_item')
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->fields('feeds_item', array('entity_id'))
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->condition('entity_type', 'taxonomy_term')
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->condition('guid', $guid)
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->execute()
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->fetchField();
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}
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/**
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* Mapping configuration summary for taxonomy.module.
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*/
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function taxonomy_feeds_summary_callback(array $mapping, $target, array $form, array $form_state) {
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$options = _taxonomy_feeds_form_callback_options();
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if (empty($mapping['term_search'])) {
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return t('Search taxonomy terms by: <strong>@search</strong>', array('@search' => $options[FEEDS_TAXONOMY_SEARCH_TERM_NAME]));
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}
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return t('Search taxonomy terms by: <strong>@search</strong>', array('@search' => $options[$mapping['term_search']]));
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}
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/**
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* Settings form callback.
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*/
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function taxonomy_feeds_form_callback(array $mapping, $target, array $form, array $form_state) {
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return array(
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'term_search' => array(
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'#type' => 'select',
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'#title' => t('Search taxonomy terms by'),
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'#options' => _taxonomy_feeds_form_callback_options(),
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'#default_value' => !empty($mapping['term_search']) ? $mapping['term_search'] : FEEDS_TAXONOMY_SEARCH_TERM_NAME,
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),
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'autocreate' => array(
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'#type' => 'checkbox',
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'#title' => t('Auto create'),
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'#description' => t("Create the term if it doesn't exist."),
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'#default_value' => !empty($mapping['autocreate']) ? $mapping['autocreate'] : 0,
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'#states' => array(
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'visible' => array(
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':input[name$="[settings][term_search]"]' => array('value' => FEEDS_TAXONOMY_SEARCH_TERM_NAME),
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),
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),
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),
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);
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}
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/**
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* Returns the list of available term search methods.
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*
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* @return array
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* An array of taxonomy search option titles.
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*/
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function _taxonomy_feeds_form_callback_options() {
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return array(
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FEEDS_TAXONOMY_SEARCH_TERM_NAME => 'Term name',
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FEEDS_TAXONOMY_SEARCH_TERM_ID => 'Term ID',
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FEEDS_TAXONOMY_SEARCH_TERM_GUID => 'GUID',
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);
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}
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