function subgroups_get_group_from_url($group_url)
{
$matches = subgroups_group_url_matches($group_url);
$group_guid = $matches['group_guid'];
$group_alias = $matches['group_alias'];
$group = get_entity($group_guid);
if (!$group && elgg_is_active_plugin('group_alias')) {
$group = get_group_from_group_alias($group_alias);
}
if ($group && $group->getURL() == $group_url) {
return $group;
} else {
return false;
}
}
/**
* Dispatcher for group alias.
* URLs take the form of
* All groups: g/
* Group profile: g/<alias>
* Group Tools: g/<alias>/<handler> => <handler>/group/<guid>
*
* @param array $page
* @return bool
*/
function group_alias_page_handler($page)
{
elgg_set_context('groups');
if (!isset($page[0])) {
groups_page_handler(array('all'), 'groups');
return true;
}
$group = get_group_from_group_alias($page[0]);
if ($group && !isset($page[1])) {
groups_page_handler(array('profile', $group->guid));
} elseif ($group && isset($page[1])) {
forward("{$page['1']}/group/{$group->guid}");
} else {
groups_page_handler($page);
}
return true;
}
foreach ($CONFIG->group as $shortname => $valuetype) {
// another work around for Elgg's encoding problems: #561, #1963
$input[$shortname] = get_input($shortname);
if (is_array($input[$shortname])) {
array_walk_recursive($input[$shortname], 'profile_array_decoder');
} else {
$input[$shortname] = html_entity_decode($input[$shortname], ENT_COMPAT, 'UTF-8');
}
if ($valuetype == 'tags') {
$input[$shortname] = string_to_tag_array($input[$shortname]);
}
if ($shortname == 'alias') {
if (!get_input('group_guid')) {
try {
validate_username($input[$shortname]);
if (!get_input('group_guid') && get_group_from_group_alias($input[$shortname])) {
throw new Exception(elgg_echo('groups:alias:already_token'));
}
} catch (Exception $e) {
register_error($e->getMessage());
forward(REFERER);
}
} else {
unset($input[$shortname]);
}
}
}
$input['name'] = get_input('name');
$input['name'] = html_entity_decode($input['name'], ENT_COMPAT, 'UTF-8');
$user = elgg_get_logged_in_user_entity();
$group_guid = (int) get_input('group_guid');
/**
* Markup callback
*
* Generate HTML markup from linkup patterns, for a single matched
* pattern. It is used as a regular expression callback.
*
* It also takes care of permissions and entity validity, so that no
* link will be made to unauthorized or non-existing entities.
*
* @return String, the resulting markup
*/
function linkup_markup($matches)
{
$prefix = $matches[1];
$marker = $matches[2];
$subject = $matches[3];
$text = "{$marker}{$subject}";
switch ($marker) {
case "@":
// user
if (preg_match("/^[a-z][\\w\\.-]+/i", $subject)) {
$entity = get_user_by_username($subject);
$text = linkup_markup_user($entity, $text);
// TODO elgg_trigger_plugin_hook('mention', 'user');
}
break;
case "!":
// group
if (preg_match("/^[0-9]+\$/", $subject)) {
// Get group by GUID
$entity = get_entity($subject);
// TODO if user can access group
} else {
if (preg_match("/^[a-z][\\w+-]+\$/i", $subject)) {
// Get group by alias
if (!elgg_is_active_plugin('group_alias')) {
break;
}
$entity = get_group_from_group_alias($subject);
}
}
$text = linkup_markup_group($entity, $text);
break;
case "#":
// hashtag or task
if (preg_match("/^[0-9]+\$/", $subject) && elgg_is_active_plugin('tasks')) {
// Get task by GUID
$entity = get_entity($subject);
if (elgg_instanceof($entity, 'object', 'task') || elgg_instanceof($entity, 'object', 'tasklist') || elgg_instanceof($entity, 'object', 'tasklist_top')) {
// Linkup task
$text = linkup_markup_task($entity, $text);
break;
}
}
// Linkup hashtag
$text = linkup_link($text, "hashtag", "/tag/{$subject}");
break;
case "*":
// entity
// Check that the subject is a GUID and current user can access
// the corresponding entity
if (!preg_match("/^[0-9]+\$/", $subject)) {
break;
}
$entity = get_entity($subject);
if (elgg_instanceof($entity, 'user')) {
$text = linkup_markup_user($entity);
} else {
if (elgg_instanceof($entity, 'group')) {
$text = linkup_markup_group($entity);
} else {
if (elgg_instanceof($entity, 'object', 'task') || elgg_instanceof($entity, 'object', 'tasklist') || elgg_instanceof($entity, 'object', 'tasklist_top')) {
$text = linkup_markup_task($entity, $text);
} else {
if (elgg_instanceof($entity, 'object')) {
// get subtype, check permissions, linkup
if (!elgg_trigger_plugin_hook('linkup', "object:{$entity->getSubtype()}", array('entity' => $entity))) {
// Default object view
$text = linkup_markup_object($entity);
}
}
}
}
}
break;
}
return "{$prefix}{$text}";
}
<?php
/**
* Group Alias activation script
* It sets an alias if group hasn't.
*/
foreach (elgg_get_entities(array('type' => 'group')) as $group) {
if (!$group->alias) {
$alias = elgg_get_friendly_title($group->name);
$alias = preg_replace("/-/", "_", $alias);
// If alias is token
if (get_group_from_group_alias($alias)) {
$alias .= $group->guid;
}
$group->alias = $alias;
$group->save();
}
}