views_handler_relationship_node_term_data.inc
- 3.x modules/taxonomy/views_handler_relationship_node_term_data.inc
- 2.x modules/taxonomy/views_handler_relationship_node_term_data.inc
Views' relationship handlers.
File
modules/taxonomy/views_handler_relationship_node_term_data.incView source
- <?php
- /**
- * @file
- * Views' relationship handlers.
- */
-
- class views_handler_relationship_node_term_data extends views_handler_relationship {
- function option_definition() {
- $options = parent::option_definition();
- $options['vids'] = array('default' => array());
- return $options;
- }
-
- /**
- * Default options form that provides the label widget that all fields
- * should have.
- */
- function options_form(&$form, &$form_state) {
- parent::options_form($form, $form_state);
- $vocabularies = taxonomy_get_vocabularies();
- $options = array();
- foreach ($vocabularies as $voc) {
- $options[$voc->vid] = check_plain($voc->name);
- }
-
- $form['vids'] = array(
- '#type' => 'checkboxes',
- '#title' => t('Vocabularies'),
- '#options' => $options,
- '#default_value' => $this->options['vids'],
- '#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.'),
- );
- }
-
- /**
- * Called to implement a relationship in a query.
- */
- function query() {
- $this->ensure_my_table();
-
- $def = $this->definition;
- $def['table'] = 'term_data';
-
- if (!empty($this->options['required']) || !array_filter($this->options['vids'])) {
- $term_node = $this->query->add_table('term_node', $this->relationship);
- $def['left_table'] = $term_node;
- $def['left_field'] = 'tid';
- $def['field'] = 'tid';
- if (!empty($this->options['required'])) {
- $def['type'] = 'INNER';
- }
- }
- else {
- // If the join is optional, join a subselect that will emulate term_data table instead
- $def['left_table'] = $this->table_alias;
- $def['left_field'] = 'vid';
- $def['field'] = 'revision';
- // fapi ensures vids are safe here.
- $vids = implode(', ', array_filter($this->options['vids']));
- $def['table formula'] = "(SELECT td.*, tn.vid AS revision FROM {term_data} td INNER JOIN {term_node} tn ON tn.tid = td.tid WHERE td.vid IN ($vids))";
- }
-
- $join = new views_join();
-
- $join->definition = $def;
- $join->construct();
- $join->adjusted = TRUE;
-
- // use a short alias for this:
- $alias = $def['table'] . '_' . $this->table;
-
- $this->alias = $this->query->add_relationship($alias, $join, 'term_data', $this->relationship);
- }
- }