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<?php
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/**
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* @file
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* Definition of views_handler_relationship_node_term_data.
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*/
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/**
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* Relationship handler to return the taxonomy terms of nodes.
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*
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* @ingroup views_relationship_handlers
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*/
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class views_handler_relationship_node_term_data extends views_handler_relationship {
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/**
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* {@inheritdoc}
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*/
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public function init(&$view, &$options) {
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parent::init($view, $options);
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// Convert legacy vids option to machine name vocabularies.
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if (!empty($this->options['vids'])) {
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$vocabularies = taxonomy_get_vocabularies();
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foreach ($this->options['vids'] as $vid) {
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if (isset($vocabularies[$vid], $vocabularies[$vid]->machine_name)) {
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$this->options['vocabularies'][$vocabularies[$vid]->machine_name] = $vocabularies[$vid]->machine_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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* {@inheritdoc}
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*/
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public function option_definition() {
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$options = parent::option_definition();
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$options['vocabularies'] = array('default' => array());
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return $options;
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}
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/**
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* {@inheritdoc}
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*/
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public function options_form(&$form, &$form_state) {
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$vocabularies = taxonomy_get_vocabularies();
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$options = array();
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foreach ($vocabularies as $voc) {
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$options[$voc->machine_name] = check_plain($voc->name);
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}
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$form['vocabularies'] = array(
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'#type' => 'checkboxes',
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'#title' => t('Vocabularies'),
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'#options' => $options,
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'#default_value' => $this->options['vocabularies'],
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'#description' => t('Choose which vocabularies you wish to relate. Remember that every term found will create a new record, so this relationship is best used on just one vocabulary that has only one term per node.'),
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);
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parent::options_form($form, $form_state);
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}
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/**
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* Called to implement a relationship in a query.
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*/
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public function query() {
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$this->ensure_my_table();
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$def = $this->definition;
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$def['table'] = 'taxonomy_term_data';
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if (!array_filter($this->options['vocabularies'])) {
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$taxonomy_index = $this->query->add_table('taxonomy_index', $this->relationship);
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$def['left_table'] = $taxonomy_index;
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$def['left_field'] = 'tid';
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$def['field'] = 'tid';
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$def['type'] = empty($this->options['required']) ? 'LEFT' : 'INNER';
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}
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else {
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// If vocabularies are supplied join a subselect instead.
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$def['left_table'] = $this->table_alias;
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$def['left_field'] = 'nid';
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$def['field'] = 'nid';
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$def['type'] = empty($this->options['required']) ? 'LEFT' : 'INNER';
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$query = db_select('taxonomy_term_data', 'td');
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$query->addJoin($def['type'], 'taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');
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$query->addJoin($def['type'], 'taxonomy_index', 'tn', 'tn.tid = td.tid');
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$query->condition('tv.machine_name', array_filter($this->options['vocabularies']));
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if (empty($this->query->options['disable_sql_rewrite'])) {
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$query->addTag('taxonomy_term_access');
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}
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$query->fields('td');
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$query->fields('tn', array('nid'));
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$def['table formula'] = $query;
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}
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$join = new views_join();
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$join->definition = $def;
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$join->construct();
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$join->adjusted = TRUE;
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// Use a short alias for this.
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$alias = $def['table'] . '_' . $this->table;
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$this->alias = $this->query->add_relationship($alias, $join, 'taxonomy_term_data', $this->relationship);
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}
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}
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