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- <?php
- /**
- * @file
- * Contains SearchApiViewsHandlerArgumentMoreLikeThis.
- */
- /**
- * Views argument handler providing a list of related items for search servers
- * supporting the "search_api_mlt" feature.
- */
- class SearchApiViewsHandlerArgumentMoreLikeThis extends SearchApiViewsHandlerArgument {
- /**
- * Specify the options this filter uses.
- */
- public function option_definition() {
- $options = parent::option_definition();
- unset($options['break_phrase']);
- unset($options['not']);
- $options['fields'] = array('default' => array());
- return $options;
- }
- /**
- * Extend the options form a bit.
- */
- public function options_form(&$form, &$form_state) {
- parent::options_form($form, $form_state);
- unset($form['break_phrase']);
- unset($form['not']);
- $index = search_api_index_load(substr($this->table, 17));
- if (!empty($index->options['fields'])) {
- $fields = array();
- foreach ($index->getFields() as $key => $field) {
- $fields[$key] = $field['name'];
- }
- }
- if (!empty($fields)) {
- $form['fields'] = array(
- '#type' => 'select',
- '#title' => t('Fields for Similarity'),
- '#description' => t('Select the fields that will be used for finding similar content. If no fields are selected, all available fields will be used.'),
- '#options' => $fields,
- '#size' => min(8, count($fields)),
- '#multiple' => TRUE,
- '#default_value' => $this->options['fields'],
- );
- }
- else {
- $form['fields'] = array(
- '#type' => 'value',
- '#value' => array(),
- );
- }
- }
- /**
- * Set up the query for this argument.
- *
- * The argument sent may be found at $this->argument.
- */
- public function query($group_by = FALSE) {
- $server = $this->query->getIndex()->server();
- if (!$server->supportsFeature('search_api_mlt')) {
- $class = search_api_get_service_info($server->class);
- watchdog('search_api_views', 'The search service "@class" does not offer "More like this" functionality.',
- array('@class' => $class['name']), WATCHDOG_ERROR);
- $this->query->abort();
- return;
- }
- $fields = $this->options['fields'] ? $this->options['fields'] : array();
- if (empty($fields)) {
- foreach ($this->query->getIndex()->options['fields'] as $key => $field) {
- $fields[] = $key;
- }
- }
- $mlt = array(
- 'id' => $this->argument,
- 'fields' => $fields,
- );
- $this->query->getSearchApiQuery()->setOption('search_api_mlt', $mlt);
- }
- }
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