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<?php
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/**
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* @file
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* Definition of views_handler_relationship_translation.
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*/
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/**
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* Handles relationships for content translation sets and provides multiple
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* options.
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*
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* @ingroup views_relationship_handlers
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*/
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class views_handler_relationship_translation extends views_handler_relationship {
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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['language'] = array('default' => 'current');
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return $options;
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}
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/**
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* Add a translation selector.
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*/
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public function options_form(&$form, &$form_state) {
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parent::options_form($form, $form_state);
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$options = array(
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'all' => t('All'),
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'current' => t('Current language'),
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'default' => t('Default language'),
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);
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$options = array_merge($options, views_language_list());
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$form['language'] = array(
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'#type' => 'select',
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'#options' => $options,
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'#default_value' => $this->options['language'],
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'#title' => t('Translation option'),
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'#description' => t('The translation options allows you to select which translation or translations in a translation set join on. Select "Current language" or "Default language" to join on the translation in the current or default language respectively. Select a specific language to join on a translation in that language. If you select "All", each translation will create a new row, which may appear to cause duplicates.'),
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);
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}
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/**
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* Called to implement a relationship in a query.
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*/
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public function query() {
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// Figure out what base table this relationship brings to the party.
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$table_data = views_fetch_data($this->definition['base']);
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$base_field = empty($this->definition['base field']) ? $table_data['table']['base']['field'] : $this->definition['base field'];
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$this->ensure_my_table();
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$def = $this->definition;
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$def['table'] = $this->definition['base'];
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$def['field'] = $base_field;
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$def['left_table'] = $this->table_alias;
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$def['left_field'] = $this->field;
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if (!empty($this->options['required'])) {
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$def['type'] = 'INNER';
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}
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$def['extra'] = array();
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if ($this->options['language'] != 'all') {
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switch ($this->options['language']) {
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case 'current':
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$def['extra'][] = array(
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'field' => 'language',
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'value' => '***CURRENT_LANGUAGE***',
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);
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break;
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case 'default':
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$def['extra'][] = array(
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'field' => 'language',
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'value' => '***DEFAULT_LANGUAGE***',
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);
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break;
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// Other values will be the language codes.
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default:
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$def['extra'][] = array(
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'field' => 'language',
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'value' => $this->options['language'],
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);
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break;
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}
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}
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if (!empty($def['join_handler']) && class_exists($def['join_handler'])) {
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$join = new $def['join_handler'];
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}
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else {
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$join = new views_join();
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}
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$join->definition = $def;
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$join->extra = "(%alias.tnid != 0 OR ({$def['left_table']}.tnid = 0 AND %alias.nid = {$def['left_table']}.nid))";
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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, $this->definition['base'], $this->relationship);
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}
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}
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