/**
* Determines whether the current user is allowed to create, edit, and delete associations
* between a user and a cluster
*
* @param int $userid The id of the user being associated to the cluster
* @param int $clustid The id of the cluster we are associating the user to
*
* @return boolean True if the current user has the required permissions, otherwise false
*/
public static function can_manage_assoc($userid, $clustid)
{
global $USER;
$allowed_clusters = array();
if (!clusterpage::can_enrol_into_cluster($clustid)) {
//the users who satisfty this condition are a superset of those who can manage associations
return false;
} else {
if (clusterpage::_has_capability('block/curr_admin:cluster:enrol', $clustid)) {
//current user has the direct capability
return true;
}
}
$allowed_clusters = cluster::get_allowed_clusters($clustid);
//query to get users associated to at least one enabling cluster
$cluster_select = '';
if (empty($allowed_clusters)) {
$cluster_select = '0=1';
} else {
$cluster_select = 'clusterid IN (' . implode(',', $allowed_clusters) . ')';
}
$select = "userid = {$userid} AND {$cluster_select}";
//user just needs to be in one of the possible clusters
if (record_exists_select(CLSTUSERTABLE, $select)) {
return true;
}
return false;
}
function can_do_default()
{
$id = $this->required_param('id', PARAM_INT);
return clusterpage::can_enrol_into_cluster($id);
}
