/**
* Delete a specified group, first removing members and links with courses and groupings.
* @param int $groupid The group to delete
* @return boolean True if deletion was successful, false otherwise
*/
function groups_db_delete_group($groupid)
{
if (!$groupid) {
$success = false;
} else {
$success = true;
// Get a list of users for the group and remove them all.
$userids = groups_db_get_members($groupid);
if ($userids != false) {
foreach ($userids as $userid) {
$userdeleted = groups_db_remove_member($userid, $groupid);
if (!$userdeleted) {
$success = false;
}
}
}
// Remove any links with groupings to which the group belongs.
//TODO: dbgroupinglib also seems to delete these links - duplication?
$groupingids = groups_get_groupings_for_group($groupid);
if ($groupingids != false) {
foreach ($groupingids as $groupingid) {
$groupremoved = groups_remove_group_from_grouping($groupid, $groupingid);
if (!$groupremoved) {
$success = false;
}
}
}
// Remove links with courses.
$results = delete_records('groups_courses_groups', 'groupid', $groupid);
if ($results == false) {
$success = false;
}
// Delete the group itself
$results = delete_records($table = 'groups', $field1 = 'id', $value1 = $groupid);
// delete_records returns an array of the results from the sql call,
// not a boolean, so we have to set our return variable
if ($results == false) {
$success = false;
}
}
return $success;
}
// First check if this group name doesn't already exist
if (groups_group_name_exists($courseid, $data->name)) {
$error = get_string('groupnameexists', 'group', $data->name);
$success = false;
} elseif (!($id = groups_create_group($course->id, $data))) {
print_error('erroreditgroup');
} else {
$success = (bool) $id;
$data->id = $id;
if ($groupingid) {
$success = $success && groups_add_group_to_grouping($id, $groupingid);
}
}
} elseif ($groupingid != $newgrouping) {
// Moving group to new grouping
$success = $success && groups_remove_group_from_grouping($id, $groupingid);
$success = $success && groups_add_group_to_grouping($id, $newgrouping);
} else {
// Updating group
$group = groups_get_group($data->id);
if (groups_group_name_exists($courseid, $data->name) && $group->name != $data->name) {
$error = get_string('groupnameexists', 'group', $data->name);
$success = false;
} elseif (!groups_update_group($data, $course->id)) {
print_error('groupnotupdated');
}
}
// Handle file upload
if ($success) {
require_once "{$CFG->libdir}/gdlib.php";
if (save_profile_image($id, $editform->_upload_manager, 'groups')) {
function test_remove_group_from_grouping()
{
$this->assertTrue(groups_remove_group_from_grouping($this->groupid, $this->groupingid));
$this->assertFalse(groups_belongs_to_grouping($this->groupid, $this->groupingid));
}
