attributes['type'] = "group"; $this->attributes['name'] = ""; $this->attributes['description'] = ""; $this->attributes['tables_split'] = 2; } /** * Construct a new user entity, optionally from a given id value. * * @param mixed $guid If an int, load that GUID. * If a db row then will attempt to load the rest of the data. * @throws Exception if there was a problem creating the user. */ function __construct($guid = null) { $this->initialise_attributes(); if (!empty($guid)) { // Is $guid is a DB row - either a entity row, or a user table row. if ($guid instanceof stdClass) { // Load the rest if (!$this->load($guid->guid)) throw new IOException(sprintf(elgg_echo('IOException:FailedToLoadGUID'), get_class(), $guid->guid)); } // Is $guid is an ElggGroup? Use a copy constructor else if ($guid instanceof ElggGroup) { foreach ($guid->attributes as $key => $value) $this->attributes[$key] = $value; } // Is this is an ElggEntity but not an ElggGroup = ERROR! else if ($guid instanceof ElggEntity) throw new InvalidParameterException(elgg_echo('InvalidParameterException:NonElggGroup')); // We assume if we have got this far, $guid is an int else if (is_numeric($guid)) { if (!$this->load($guid)) IOException(sprintf(elgg_echo('IOException:FailedToLoadGUID'), get_class(), $guid)); } else throw new InvalidParameterException(elgg_echo('InvalidParameterException:UnrecognisedValue')); } } /** * Add an ElggObject to this group. * * @param ElggObject $object The object. * @return bool */ public function addObjectToGroup(ElggObject $object) { return add_object_to_group($this->getGUID(), $object->getGUID()); } /** * Remove an object from the containing group. * * @param int $guid The guid of the object. * @return bool */ public function removeObjectFromGroup($guid) { return remove_object_from_group($this->getGUID(), $guid); } public function get($name) { if ($name == 'username') { return 'group:' . $this->getGUID(); } return parent::get($name); } /** * Start friendable compatibility block: * * public function addFriend($friend_guid); public function removeFriend($friend_guid); public function isFriend(); public function isFriendsWith($user_guid); public function isFriendOf($user_guid); public function getFriends($subtype = "", $limit = 10, $offset = 0); public function getFriendsOf($subtype = "", $limit = 10, $offset = 0); public function getObjects($subtype="", $limit = 10, $offset = 0); public function getFriendsObjects($subtype = "", $limit = 10, $offset = 0); public function countObjects($subtype = ""); */ /** * For compatibility with Friendable */ public function addFriend($friend_guid) { return $this->join(get_entity($friend_guid)); } /** * For compatibility with Friendable */ public function removeFriend($friend_guid) { return $this->leave(get_entity($friend_guid)); } /** * For compatibility with Friendable */ public function isFriend() { return $this->isMember(); } /** * For compatibility with Friendable */ public function isFriendsWith($user_guid) { return $this->isMember($user_guid); } /** * For compatibility with Friendable */ public function isFriendOf($user_guid) { return $this->isMember($user_guid); } /** * For compatibility with Friendable */ public function getFriends($subtype = "", $limit = 10, $offset = 0) { return get_group_members($this->getGUID(), $limit, $offset); } /** * For compatibility with Friendable */ public function getFriendsOf($subtype = "", $limit = 10, $offset = 0) { return get_group_members($this->getGUID(), $limit, $offset); } /** * Get objects contained in this group. * * @param string $subtype * @param int $limit * @param int $offset * @return mixed */ public function getObjects($subtype="", $limit = 10, $offset = 0) { return get_objects_in_group($this->getGUID(), $subtype, 0, 0, "", $limit, $offset, false); } /** * For compatibility with Friendable */ public function getFriendsObjects($subtype = "", $limit = 10, $offset = 0) { return get_objects_in_group($this->getGUID(), $subtype, 0, 0, "", $limit, $offset, false); } /** * For compatibility with Friendable */ public function countObjects($subtype = "") { return get_objects_in_group($this->getGUID(), $subtype, 0, 0, "", 10, 0, true); } /** * End friendable compatibility block */ /** * Get a list of group members. * * @param int $limit * @param int $offset * @return mixed */ public function getMembers($limit = 10, $offset = 0, $count = false) { return get_group_members($this->getGUID(), $limit, $offset, 0 , $count); } /** * Returns whether the current group is public membership or not. * @return bool */ public function isPublicMembership() { if ($this->membership == ACCESS_PUBLIC) return true; return false; } /** * Return whether a given user is a member of this group or not. * * @param ElggUser $user The user * @return bool */ public function isMember($user = 0) { if (!($user instanceof ElggUser)) $user = get_loggedin_user(); if (!($user instanceof ElggUser)) return false; return is_group_member($this->getGUID(), $user->getGUID()); } /** * Join an elgg user to this group. * * @param ElggUser $user * @return bool */ public function join(ElggUser $user) { return join_group($this->getGUID(), $user->getGUID()); } /** * Remove a user from the group. * * @param ElggUser $user */ public function leave(ElggUser $user) { return leave_group($this->getGUID(), $user->getGUID()); } /** * Override the load function. * This function will ensure that all data is loaded (were possible), so * if only part of the ElggGroup is loaded, it'll load the rest. * * @param int $guid */ protected function load($guid) { // Test to see if we have the generic stuff if (!parent::load($guid)) return false; // Check the type if ($this->attributes['type']!='group') throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $guid, get_class())); // Load missing data $row = get_group_entity_as_row($guid); if (($row) && (!$this->isFullyLoaded())) $this->attributes['tables_loaded'] ++; // If $row isn't a cached copy then increment the counter // Now put these into the attributes array as core values $objarray = (array) $row; foreach($objarray as $key => $value) $this->attributes[$key] = $value; return true; } /** * Override the save function. */ public function save() { // Save generic stuff if (!parent::save()) return false; // Now save specific stuff return create_group_entity($this->get('guid'), $this->get('name'), $this->get('description')); } // EXPORTABLE INTERFACE //////////////////////////////////////////////////////////// /** * Return an array of fields which can be exported. */ public function getExportableValues() { return array_merge(parent::getExportableValues(), array( 'name', 'description', )); } } /** * Get the group entity. * * @param int $guid */ function get_group_entity_as_row($guid) { global $CONFIG; $guid = (int)$guid; /*$row = retrieve_cached_entity_row($guid); if ($row) { // We have already cached this object, so retrieve its value from the cache if (isset($CONFIG->debug) && $CONFIG->debug) error_log("** Retrieving sub part of GUID:$guid from cache"); return $row; } else {*/ // Object not cached, load it. if (isset($CONFIG->debug) && $CONFIG->debug == true) error_log("** Sub part of GUID:$guid loaded from DB"); return get_data_row("SELECT * from {$CONFIG->dbprefix}groups_entity where guid=$guid"); //} } /** * Create or update the extras table for a given group. * Call create_entity first. * * @param int $guid * @param string $name * @param string $description */ function create_group_entity($guid, $name, $description) { global $CONFIG; $guid = (int)$guid; $name = sanitise_string($name); $description = sanitise_string($description); $row = get_entity_as_row($guid); if ($row) { // Exists and you have access to it if ($exists = get_data_row("SELECT guid from {$CONFIG->dbprefix}groups_entity WHERE guid = {$guid}")) { $result = update_data("UPDATE {$CONFIG->dbprefix}groups_entity set name='$name', description='$description' where guid=$guid"); if ($result!=false) { // Update succeeded, continue $entity = get_entity($guid); if (trigger_elgg_event('update',$entity->type,$entity)) { return $guid; } else { $entity->delete(); //delete_entity($guid); } } } else { // Update failed, attempt an insert. $result = insert_data("INSERT into {$CONFIG->dbprefix}groups_entity (guid, name, description) values ($guid, '$name','$description')"); if ($result!==false) { $entity = get_entity($guid); if (trigger_elgg_event('create',$entity->type,$entity)) { return $guid; } else { $entity->delete(); //delete_entity($guid); } } } } return false; } /** * THIS FUNCTION IS DEPRECATED. * * Delete a group's extra data. * * @param int $guid The guid of the group * @return bool */ function delete_group_entity($guid) { system_message(sprintf(elgg_echo('deprecatedfunction'), 'delete_user_entity')); return 1; // Always return that we have deleted one row in order to not break existing code. } /** * Add an object to the given group. * * @param int $group_guid The group to add the object to. * @param int $object_guid The guid of the elgg object (must be ElggObject or a child thereof) * @return bool */ function add_object_to_group($group_guid, $object_guid) { $group_guid = (int)$group_guid; $object_guid = (int)$object_guid; $group = get_entity($group_guid); $object = get_entity($object_guid); if ((!$group) || (!$object)) return false; if (!($group instanceof ElggGroup)) throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $group_guid, 'ElggGroup')); if (!($object instanceof ElggObject)) throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $object_guid, 'ElggObject')); $object->container_guid = $group_guid; return $object->save(); } /** * Remove an object from the given group. * * @param int $group_guid The group to remove the object from * @param int $object_guid The object to remove */ function remove_object_from_group($group_guid, $object_guid) { $group_guid = (int)$group_guid; $object_guid = (int)$object_guid; $group = get_entity($group_guid); $object = get_entity($object_guid); if ((!$group) || (!$object)) return false; if (!($group instanceof ElggGroup)) throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $group_guid, 'ElggGroup')); if (!($object instanceof ElggObject)) throw new InvalidClassException(sprintf(elgg_echo('InvalidClassException:NotValidElggStar'), $object_guid, 'ElggObject')); $object->container_guid = $object->owner_guid; return $object->save(); } /** * Return an array of objects in a given container. * @see get_entities() * * @param int $group_guid The container (defaults to current page owner) * @param string $subtype The subtype * @param int $owner_guid Owner * @param int $site_guid The site * @param string $order_by Order * @param unknown_type $limit Limit on number of elements to return, by default 10. * @param unknown_type $offset Where to start, by default 0. * @param unknown_type $count Whether to return the entities or a count of them. */ function get_objects_in_group($group_guid, $subtype = "", $owner_guid = 0, $site_guid = 0, $order_by = "", $limit = 10, $offset = 0, $count = false) { global $CONFIG; if ($subtype === false || $subtype === null || $subtype === 0) return false; $subtype = get_subtype_id('object', $subtype); if ($order_by == "") $order_by = "e.time_created desc"; $order_by = sanitise_string($order_by); $limit = (int)$limit; $offset = (int)$offset; $site_guid = (int) $site_guid; if ($site_guid == 0) $site_guid = $CONFIG->site_guid; $container_guid = (int)$group_guid; if ($container_guid == 0) $container_guid = page_owner(); $where = array(); $where[] = "e.type='object'"; if ($subtype!=="") $where[] = "e.subtype=$subtype"; if ($owner_guid != "") { if (!is_array($owner_guid)) { $owner_guid = (int) $owner_guid; $where[] = "e.container_guid = '$owner_guid'"; } else if (sizeof($owner_guid) > 0) { // Cast every element to the owner_guid array to int $owner_guid = array_map("sanitise_int", $owner_guid); $owner_guid = implode(",",$owner_guid); $where[] = "e.container_guid in ({$owner_guid})"; } } if ($site_guid > 0) $where[] = "e.site_guid = {$site_guid}"; if ($container_guid > 0) $where[] = "e.container_guid = {$container_guid}"; if (!$count) { $query = "SELECT * from {$CONFIG->dbprefix}entities e join {$CONFIG->dbprefix}objects_entity o on e.guid=o.guid where "; } else { $query = "SELECT count(e.guid) as total from {$CONFIG->dbprefix}entities e join {$CONFIG->dbprefix}objects_entity o on e.guid=o.guid where "; } foreach ($where as $w) $query .= " $w and "; $query .= get_access_sql_suffix('e'); // Add access controls if (!$count) { $query .= " order by $order_by"; if ($limit) $query .= " limit $offset, $limit"; // Add order and limit $dt = get_data($query, "entity_row_to_elggstar"); return $dt; } else { $total = get_data_row($query); return $total->total; } } /** * Get all the entities from metadata from a group. * * @param int $group_guid The ID of the group. * @param mixed $meta_name * @param mixed $meta_value * @param string $entity_type The type of entity to look for, eg 'site' or 'object' * @param string $entity_subtype The subtype of the entity. * @param int $limit * @param int $offset * @param string $order_by Optional ordering. * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites. * @param true|false $count If set to true, returns the total number of entities rather than a list. (Default: false) */ function get_entities_from_metadata_groups($group_guid, $meta_name, $meta_value = "", $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $order_by = "", $site_guid = 0, $count = false) { global $CONFIG; $meta_n = get_metastring_id($meta_name); $meta_v = get_metastring_id($meta_value); $entity_type = sanitise_string($entity_type); $entity_subtype = get_subtype_id($entity_type, $entity_subtype); $limit = (int)$limit; $offset = (int)$offset; if ($order_by == "") $order_by = "e.time_created desc"; $order_by = sanitise_string($order_by); $site_guid = (int) $site_guid; if (is_array($owner_guid)) { foreach($owner_guid as $key => $guid) { $owner_guid[$key] = (int) $guid; } } else { $owner_guid = (int) $owner_guid; } if ($site_guid == 0) $site_guid = $CONFIG->site_guid; $container_guid = (int)$group_guid; if ($container_guid == 0) $container_guid = page_owner(); //$access = get_access_list(); $where = array(); if ($entity_type!="") $where[] = "e.type='$entity_type'"; if ($entity_subtype) $where[] = "e.subtype=$entity_subtype"; if ($meta_name!="") $where[] = "m.name_id='$meta_n'"; if ($meta_value!="") $where[] = "m.value_id='$meta_v'"; if ($site_guid > 0) $where[] = "e.site_guid = {$site_guid}"; if ($container_guid > 0) $where[] = "e.container_guid = {$container_guid}"; if (is_array($owner_guid)) { $where[] = "e.container_guid in (".implode(",",$owner_guid).")"; } else if ($owner_guid > 0) $where[] = "e.container_guid = {$owner_guid}"; if (!$count) { $query = "SELECT distinct e.* "; } else { $query = "SELECT count(e.guid) as total "; } $query .= "from {$CONFIG->dbprefix}entities e JOIN {$CONFIG->dbprefix}metadata m on e.guid = m.entity_guid join {$CONFIG->dbprefix}objects_entity o on e.guid = o.guid where"; foreach ($where as $w) $query .= " $w and "; $query .= get_access_sql_suffix("e"); // Add access controls if (!$count) { $query .= " order by $order_by limit $offset, $limit"; // Add order and limit return get_data($query, "entity_row_to_elggstar"); } else { if ($row = get_data_row($query)) return $row->total; } return false; } /** * As get_entities_from_metadata_groups() but with multiple entities. * * @param int $group_guid The ID of the group. * @param array $meta_array Array of 'name' => 'value' pairs * @param string $entity_type The type of entity to look for, eg 'site' or 'object' * @param string $entity_subtype The subtype of the entity. * @param int $limit * @param int $offset * @param string $order_by Optional ordering. * @param int $site_guid The site to get entities for. Leave as 0 (default) for the current site; -1 for all sites. * @param true|false $count If set to true, returns the total number of entities rather than a list. (Default: false) * @return int|array List of ElggEntities, or the total number if count is set to false */ function get_entities_from_metadata_groups_multi($group_guid, $meta_array, $entity_type = "", $entity_subtype = "", $owner_guid = 0, $limit = 10, $offset = 0, $order_by = "", $site_guid = 0, $count = false) { global $CONFIG; if (!is_array($meta_array) || sizeof($meta_array) == 0) { return false; } $where = array(); $mindex = 1; $join = ""; foreach($meta_array as $meta_name => $meta_value) { $meta_n = get_metastring_id($meta_name); $meta_v = get_metastring_id($meta_value); $join .= " JOIN {$CONFIG->dbprefix}metadata m{$mindex} on e.guid = m{$mindex}.entity_guid join {$CONFIG->dbprefix}objects_entity o on e.guid = o.guid "; if ($meta_name!="") $where[] = "m{$mindex}.name_id='$meta_n'"; if ($meta_value!="") $where[] = "m{$mindex}.value_id='$meta_v'"; $mindex++; } $entity_type = sanitise_string($entity_type); $entity_subtype = get_subtype_id($entity_type, $entity_subtype); $limit = (int)$limit; $offset = (int)$offset; if ($order_by == "") $order_by = "e.time_created desc"; $order_by = sanitise_string($order_by); $owner_guid = (int) $owner_guid; $site_guid = (int) $site_guid; if ($site_guid == 0) $site_guid = $CONFIG->site_guid; //$access = get_access_list(); if ($entity_type!="") $where[] = "e.type = '{$entity_type}'"; if ($entity_subtype) $where[] = "e.subtype = {$entity_subtype}"; if ($site_guid > 0) $where[] = "e.site_guid = {$site_guid}"; if ($owner_guid > 0) $where[] = "e.owner_guid = {$owner_guid}"; if ($container_guid > 0) $where[] = "e.container_guid = {$container_guid}"; if ($count) { $query = "SELECT count(e.guid) as total "; } else { $query = "SELECT distinct e.* "; } $query .= " from {$CONFIG->dbprefix}entities e {$join} where"; foreach ($where as $w) $query .= " $w and "; $query .= get_access_sql_suffix("e"); // Add access controls if (!$count) { $query .= " order by $order_by 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; } /** * Return a list of this group's members. * * @param int $group_guid The ID of the container/group. * @param int $limit The limit * @param int $offset The offset * @param int $site_guid The site * @param bool $count Return the users (false) or the count of them (true) * @return mixed */ function get_group_members($group_guid, $limit = 10, $offset = 0, $site_guid = 0, $count = false) { return get_entities_from_relationship('member', $group_guid, true, 'user', '', 0, "", $limit, $offset, $count, $site_guid); } /** * Return whether a given user is a member of the group or not. * * @param int $group_guid The group ID * @param int $user_guid The user guid * @return bool */ function is_group_member($group_guid, $user_guid) { return check_entity_relationship($user_guid, 'member', $group_guid); } /** * Join a user to a group. * * @param int $group_guid The group. * @param int $user_guid The user. */ function join_group($group_guid, $user_guid) { trigger_elgg_event('join','group',array('group' => get_entity($group_guid), 'user' => get_entity($user_guid))); return add_entity_relationship($user_guid, 'member', $group_guid); } /** * Remove a user from a group. * * @param int $group_guid The group. * @param int $user_guid The user. */ function leave_group($group_guid, $user_guid) { trigger_elgg_event('leave','group',array('group' => get_entity($group_guid), 'user' => get_entity($user_guid))); return remove_entity_relationship($user_guid, 'member', $group_guid); } /** * Return all groups a user is a member of. * * @param unknown_type $user_guid */ function get_users_membership($user_guid) { return get_entities_from_relationship('member', $user_guid, false); } /** * Checks access to a group. * * @param boolean $forward If set to true (default), will forward the page; if set to false, will return true or false. * @return true|false If $forward is set to false. */ function group_gatekeeper($forward = true) { $allowed = true; $url = ''; if ($group = page_owner_entity()) { if ($group instanceof ElggGroup) { $url = $group->getURL(); if ( ((!isloggedin()) && (!$group->isPublicMembership())) || ((!$group->isMember(get_loggedin_user()) && (!$group->isPublicMembership()))) ) $allowed = false; // Admin override if (isadminloggedin()) $allowed = true; } } if ($forward && $allowed == false) { forward($url); exit; } return $allowed; } /** * Manages group tool options * * @param string $name Name of the group tool option * @param string $label Used for the group edit form * @param boolean $default_on True if this option should be active by default * **/ function add_group_tool_option($name,$label,$default_on=true) { global $CONFIG; if (!isset($CONFIG->group_tool_options)) { $CONFIG->group_tool_options = array(); } $group_tool_option = new stdClass; $group_tool_option->name = $name; $group_tool_option->label = $label; $group_tool_option->default_on = $default_on; $CONFIG->group_tool_options[] = $group_tool_option; } /** * Searches for a group based on a complete or partial name or description * * @param string $criteria The partial or full name or description * @param int $limit Limit of the search. * @param int $offset Offset. * @param string $order_by The order. * @param boolean $count Whether to return the count of results or just the results. */ function search_for_group($criteria, $limit = 10, $offset = 0, $order_by = "", $count = false) { global $CONFIG; $criteria = sanitise_string($criteria); $limit = (int)$limit; $offset = (int)$offset; $order_by = sanitise_string($order_by); $access = get_access_sql_suffix("e"); if ($order_by == "") $order_by = "e.time_created desc"; if ($count) { $query = "SELECT count(e.guid) as total "; } else { $query = "SELECT e.* "; } $query .= "from {$CONFIG->dbprefix}entities e join {$CONFIG->dbprefix}groups_entity g on e.guid=g.guid where "; // $query .= " match(u.name,u.username) against ('$criteria') "; $query .= "(g.name like \"%{$criteria}%\" or g.description like \"%{$criteria}%\")"; $query .= " and $access"; if (!$count) { $query .= " order by $order_by limit $offset, $limit"; // Add order and limit return get_data($query, "entity_row_to_elggstar"); } else { if ($count = get_data_row($query)) { return $count->total; } } return false; } /** * Returns a formatted list of groups suitable for injecting into search. * */ function search_list_groups_by_name($hook, $user, $returnvalue, $tag) { // Change this to set the number of groups that display on the search page $threshold = 4; $object = get_input('object'); if (!get_input('offset') && (empty($object) || $object == 'group')) if ($groups = search_for_group($tag,$threshold)) { $countgroups = search_for_group($tag,0,0,"",true); $return = elgg_view('group/search/startblurb',array('count' => $countgroups, 'tag' => $tag)); foreach($groups as $group) { $return .= elgg_view_entity($group); } $return .= elgg_view('group/search/finishblurb',array('count' => $countgroups, 'threshold' => $threshold, 'tag' => $tag)); return $return; } } /** * Displays a list of group objects that have been searched for. * * @see elgg_view_entity_list * * @param string $tag Search criteria * @param int $limit The number of entities to display on a page * @return string The list in a form suitable to display */ function list_group_search($tag, $limit = 10) { $offset = (int) get_input('offset'); $limit = (int) $limit; $count = (int) search_for_group($tag, 10, 0, '', true); $entities = search_for_group($tag, $limit, $offset); return elgg_view_entity_list($entities, $count, $offset, $limit, $fullview, false); } /** * Performs initialisation functions for groups * */ function group_init() { // Register an entity type register_entity_type('group',''); // Register a search hook register_plugin_hook('search','all','search_list_groups_by_name'); } register_elgg_event_handler('init','system','group_init'); ?>