diff options
Diffstat (limited to 'engine/lib')
| -rw-r--r-- | engine/lib/relationships.php | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/engine/lib/relationships.php b/engine/lib/relationships.php index 600bb2f0a..409de0015 100644 --- a/engine/lib/relationships.php +++ b/engine/lib/relationships.php @@ -700,6 +700,100 @@ } /** + * Gets the number of entities by a the number of entities related to them in a particular way also constrained by + * metadata + * + * @param string $relationship The relationship eg "friends_of" + * @param bool $inverse_relationship Reverse the normal function of the query to instead say "give me all entities for whome $relationship_guid is a $relationship of" (default: true) + * @param String $meta_name The metadata name + * @param String $meta_value The metadata value + * @param string $type The type of entity (default: all) + * @param string $subtype The entity subtype (default: all) + * @param int $owner_guid The owner of the entities (default: none) + * @param int $limit + * @param int $offset + * @param boolean $count Set to true if you want to count the number of entities instead (default false) + * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites. + * @return array|int|false An array of entities, or the number of entities, or false on failure + */ + function get_entities_from_relationships_and_meta($relationship, $inverse_relationship = false, $meta_name = "", $meta_value = "", $type = "", $subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $count = false, $site_guid = 0) + { + + global $CONFIG; + + $relationship = sanitise_string($relationship); + $inverse_relationship = (bool)$inverse_relationship; + $type = sanitise_string($type); + $subtype = get_subtype_id($type, $subtype); + $owner_guid = (int)$owner_guid; + $order_by = sanitise_string($order_by); + $limit = (int)$limit; + $offset = (int)$offset; + $site_guid = (int) $site_guid; + if ($site_guid == 0) + $site_guid = $CONFIG->site_guid; + + $meta_n = get_metastring_id($meta_name); + $meta_v = get_metastring_id($meta_value); + + //$access = get_access_list(); + + $where = array(); + + if ($relationship!="") + $where[] = "r.relationship='$relationship'"; + if ($inverse_relationship) { + $on = 'e.guid = r.guid_two'; + } else { + $on = 'e.guid = r.guid_one'; + } + if ($type != "") + $where[] = "e.type='$type'"; + if ($subtype) + $where[] = "e.subtype=$subtype"; + if ($owner_guid != "") + $where[] = "e.container_guid='$owner_guid'"; + if ($site_guid > 0) + $where[] = "e.site_guid = {$site_guid}"; + + $metajoin = ""; + if (($meta_name!=="") || ($meta_value!=="")) { + $metajoin = " JOIN {$CONFIG->dbprefix}metadata m on e.guid=m.entity_guid"; + + if ($meta_name!=="") + $where[] = "m.name_id='$meta_n'"; + if ($meta_value!=="") + $where[] = "m.value_id='$meta_v'"; + } + + if ($count) { + $query = "SELECT count(distinct e.guid) as total "; + } else { + $query = "SELECT distinct e.*, count(e.guid) as total "; + } + + $query .= " from {$CONFIG->dbprefix}entity_relationships r JOIN {$CONFIG->dbprefix}entities e on {$on} {$metajoin} where "; + + if (!empty($where)) + foreach ($where as $w) + $query .= " $w and "; + $query .= get_access_sql_suffix("e"); // Add access controls + if (($meta_name!=="") || ($meta_value!=="")) $query .= ' and ' . get_access_sql_suffix("m"); // Add access controls + + if (!$count) { + $query .= " group by e.guid "; + $query .= " order by total desc limit {$offset}, {$limit}"; // Add order and limit + return get_data($query, "entity_row_to_elggstar"); + } else { + if ($count = get_data_row($query)) { + return $count->total; + } + } + + return false; + } + + /** * Sets the URL handler for a particular relationship type * * @param string $function_name The function to register |