<?php /** * Elgg core search. * * @package Elgg * @subpackage Core */ /** * Return default results for searches on objects. * * @param unknown_type $hook * @param unknown_type $type * @param unknown_type $value * @param unknown_type $params * @return unknown_type */ function search_objects_hook($hook, $type, $value, $params) { $db_prefix = elgg_get_config('dbprefix'); $join = "JOIN {$db_prefix}objects_entity oe ON e.guid = oe.guid"; $params['joins'] = array($join); $fields = array('title', 'description'); $where = search_get_where_sql('oe', $fields, $params, FALSE); $params['wheres'] = array($where); $params['count'] = TRUE; $count = elgg_get_entities($params); // no need to continue if nothing here. if (!$count) { return array('entities' => array(), 'count' => $count); } $params['count'] = FALSE; $entities = elgg_get_entities($params); // add the volatile data for why these entities have been returned. foreach ($entities as $entity) { $title = search_get_highlighted_relevant_substrings($entity->title, $params['query']); $entity->setVolatileData('search_matched_title', $title); $desc = search_get_highlighted_relevant_substrings($entity->description, $params['query']); $entity->setVolatileData('search_matched_description', $desc); } return array( 'entities' => $entities, 'count' => $count, ); } /** * Return default results for searches on groups. * * @param unknown_type $hook * @param unknown_type $type * @param unknown_type $value * @param unknown_type $params * @return unknown_type */ function search_groups_hook($hook, $type, $value, $params) { $db_prefix = elgg_get_config('dbprefix'); $query = sanitise_string($params['query']); $join = "JOIN {$db_prefix}groups_entity ge ON e.guid = ge.guid"; $params['joins'] = array($join); $fields = array('name', 'description'); // force into boolean mode because we've having problems with the // "if > 50% match 0 sets are returns" problem. $where = search_get_where_sql('ge', $fields, $params, FALSE); $params['wheres'] = array($where); // override subtype -- All groups should be returned regardless of subtype. $params['subtype'] = ELGG_ENTITIES_ANY_VALUE; $params['count'] = TRUE; $count = elgg_get_entities($params); // no need to continue if nothing here. if (!$count) { return array('entities' => array(), 'count' => $count); } $params['count'] = FALSE; $entities = elgg_get_entities($params); // add the volatile data for why these entities have been returned. foreach ($entities as $entity) { $name = search_get_highlighted_relevant_substrings($entity->name, $query); $entity->setVolatileData('search_matched_title', $name); $description = search_get_highlighted_relevant_substrings($entity->description, $query); $entity->setVolatileData('search_matched_description', $description); } return array( 'entities' => $entities, 'count' => $count, ); } /** * Return default results for searches on users. * * @todo add profile field MD searching * * @param unknown_type $hook * @param unknown_type $type * @param unknown_type $value * @param unknown_type $params * @return unknown_type */ function search_users_hook($hook, $type, $value, $params) { $db_prefix = elgg_get_config('dbprefix'); $query = sanitise_string($params['query']); $join = "JOIN {$db_prefix}users_entity ue ON e.guid = ue.guid"; $params['joins'] = array($join); // $where = "(ue.guid = e.guid // AND (ue.username LIKE '%$query%' // OR ue.name LIKE '%$query%' // ) // )"; $fields = array('username', 'name'); $where = search_get_where_sql('ue', $fields, $params, FALSE); $params['wheres'] = array($where); // override subtype -- All users should be returned regardless of subtype. $params['subtype'] = ELGG_ENTITIES_ANY_VALUE; $params['count'] = TRUE; $count = elgg_get_entities($params); // no need to continue if nothing here. if (!$count) { return array('entities' => array(), 'count' => $count); } $params['count'] = FALSE; $entities = elgg_get_entities($params); // add the volatile data for why these entities have been returned. foreach ($entities as $entity) { $username = search_get_highlighted_relevant_substrings($entity->username, $query); $entity->setVolatileData('search_matched_title', $username); $name = search_get_highlighted_relevant_substrings($entity->name, $query); $entity->setVolatileData('search_matched_description', $name); } return array( 'entities' => $entities, 'count' => $count, ); } /** * Return default results for searches on tags. * * @param unknown_type $hook * @param unknown_type $type * @param unknown_type $value * @param unknown_type $params * @return unknown_type */ function search_tags_hook($hook, $type, $value, $params) { $db_prefix = elgg_get_config('dbprefix'); $valid_tag_names = elgg_get_registered_tag_metadata_names(); // @todo will need to split this up to support searching multiple tags at once. $query = sanitise_string($params['query']); // if passed a tag metadata name, only search on that tag name. // tag_name isn't included in the params because it's specific to // tag searches. if ($tag_names = get_input('tag_names')) { if (is_array($tag_names)) { $search_tag_names = $tag_names; } else { $search_tag_names = array($tag_names); } // check these are valid to avoid arbitrary metadata searches. foreach ($search_tag_names as $i => $tag_name) { if (!in_array($tag_name, $valid_tag_names)) { unset($search_tag_names[$i]); } } } else { $search_tag_names = $valid_tag_names; } // don't use elgg_get_entities_from_metadata() here because of // performance issues. since we don't care what matches at this point // use an IN clause to grab everything that matches at once and sort // out the matches later. $params['joins'][] = "JOIN {$db_prefix}metadata md on e.guid = md.entity_guid"; $params['joins'][] = "JOIN {$db_prefix}metastrings msn on md.name_id = msn.id"; $params['joins'][] = "JOIN {$db_prefix}metastrings msv on md.value_id = msv.id"; $access = get_access_sql_suffix('md'); $sanitised_tags = array(); foreach ($search_tag_names as $tag) { $sanitised_tags[] = '"' . sanitise_string($tag) . '"'; } $tags_in = implode(',', $sanitised_tags); $params['wheres'][] = "(msn.string IN ($tags_in) AND msv.string = '$query' AND $access)"; $params['count'] = TRUE; $count = elgg_get_entities($params); // no need to continue if nothing here. if (!$count) { return array('entities' => array(), 'count' => $count); } $params['count'] = FALSE; $entities = elgg_get_entities($params); // add the volatile data for why these entities have been returned. foreach ($entities as $entity) { $matched_tags_strs = array(); // get tags for each tag name requested to find which ones matched. foreach ($search_tag_names as $tag_name) { $tags = $entity->getTags($tag_name); // @todo make one long tag string and run this through the highlight // function. This might be confusing as it could chop off // the tag labels. if (in_array(strtolower($query), array_map('strtolower', $tags))) { if (is_array($tags)) { $tag_name_str = elgg_echo("tag_names:$tag_name"); $matched_tags_strs[] = "$tag_name_str: " . implode(', ', $tags); } } } // different entities have different titles switch($entity->type) { case 'site': case 'user': case 'group': $title_tmp = $entity->name; break; case 'object': $title_tmp = $entity->title; break; } // Nick told me my idea was dirty, so I'm hard coding the numbers. $title_tmp = strip_tags($title_tmp); if (elgg_strlen($title_tmp) > 297) { $title_str = elgg_substr($title_tmp, 0, 297) . '...'; } else { $title_str = $title_tmp; } $desc_tmp = strip_tags($entity->description); if (elgg_strlen($desc_tmp) > 297) { $desc_str = elgg_substr($desc_tmp, 0, 297) . '...'; } else { $desc_str = $desc_tmp; } $tags_str = implode('. ', $matched_tags_strs); $tags_str = search_get_highlighted_relevant_substrings($tags_str, $params['query']); $entity->setVolatileData('search_matched_title', $title_str); $entity->setVolatileData('search_matched_description', $desc_str); $entity->setVolatileData('search_matched_extra', $tags_str); } return array( 'entities' => $entities, 'count' => $count, ); } /** * Register tags as a custom search type. * * @param unknown_type $hook * @param unknown_type $type * @param unknown_type $value * @param unknown_type $params * @return unknown_type */ function search_custom_types_tags_hook($hook, $type, $value, $params) { $value[] = 'tags'; return $value; } /** * Return default results for searches on comments. * * @param unknown_type $hook * @param unknown_type $type * @param unknown_type $value * @param unknown_type $params * @return unknown_type */ function search_comments_hook($hook, $type, $value, $params) { $db_prefix = elgg_get_config('dbprefix'); $query = sanitise_string($params['query']); $params['annotation_names'] = array('generic_comment', 'group_topic_post'); $params['joins'] = array( "JOIN {$db_prefix}annotations a on e.guid = a.entity_guid", "JOIN {$db_prefix}metastrings msn on a.name_id = msn.id", "JOIN {$db_prefix}metastrings msv on a.value_id = msv.id" ); $fields = array('string'); // force IN BOOLEAN MODE since fulltext isn't // available on metastrings (and boolean mode doesn't need it) $search_where = search_get_where_sql('msv', $fields, $params, FALSE); $container_and = ''; if ($params['container_guid'] && $params['container_guid'] !== ELGG_ENTITIES_ANY_VALUE) { $container_and = 'AND e.container_guid = ' . sanitise_string($params['container_guid']); } $e_access = get_access_sql_suffix('e'); $a_access = get_access_sql_suffix('a'); // @todo this can probably be done through the api.. $q = "SELECT count(DISTINCT a.id) as total FROM {$db_prefix}annotations a JOIN {$db_prefix}metastrings msn ON a.name_id = msn.id JOIN {$db_prefix}metastrings msv ON a.value_id = msv.id JOIN {$db_prefix}entities e ON a.entity_guid = e.guid WHERE msn.string IN ('generic_comment', 'group_topic_post') AND ($search_where) AND $e_access AND $a_access $container_and "; if (!$result = get_data($q)) { return FALSE; } $count = $result[0]->total; // don't continue if nothing there... if (!$count) { return array ('entities' => array(), 'count' => 0); } $q = "SELECT DISTINCT a.*, msv.string as comment FROM {$db_prefix}annotations a JOIN {$db_prefix}metastrings msn ON a.name_id = msn.id JOIN {$db_prefix}metastrings msv ON a.value_id = msv.id JOIN {$db_prefix}entities e ON a.entity_guid = e.guid WHERE msn.string IN ('generic_comment', 'group_topic_post') AND ($search_where) AND $e_access AND $a_access $container_and LIMIT {$params['offset']}, {$params['limit']} "; $comments = get_data($q); // @todo if plugins are disabled causing subtypes // to be invalid and there are comments on entities of those subtypes, // the counts will be wrong here and results might not show up correctly, // especially on the search landing page, which only pulls out two results. // probably better to check against valid subtypes than to do what I'm doing. // need to return actual entities // add the volatile data for why these entities have been returned. $entities = array(); foreach ($comments as $comment) { $entity = get_entity($comment->entity_guid); // hic sunt dracones if (!$entity) { //continue; $entity = new ElggObject(); $entity->setVolatileData('search_unavailable_entity', TRUE); } $comment_str = search_get_highlighted_relevant_substrings($comment->comment, $query); $entity->setVolatileData('search_match_annotation_id', $comment->id); $entity->setVolatileData('search_matched_comment', $comment_str); $entity->setVolatileData('search_matched_comment_owner_guid', $comment->owner_guid); $entity->setVolatileData('search_matched_comment_time_created', $comment->time_created); $entities[] = $entity; } return array( 'entities' => $entities, 'count' => $count, ); } /** * Register comments as a custom search type. * * @param unknown_type $hook * @param unknown_type $type * @param unknown_type $value * @param unknown_type $params * @return unknown_type */ function search_custom_types_comments_hook($hook, $type, $value, $params) { $value[] = 'comments'; return $value; }