public function delete_permission($task_set_id, $task_set_permission_id)
{
$output = new stdClass();
$output->result = FALSE;
$output->message = '';
$this->_transaction_isolation();
$this->db->trans_begin();
$task_set = new Task_set();
$task_set->get_by_id((int) $task_set_id);
$task_set_permission = new Task_set_permission();
$task_set_permission->get_by_id((int) $task_set_permission_id);
if ($task_set->exists() && !is_null($task_set->course_id)) {
if ($task_set_permission->exists() && $task_set_permission->is_related_to($task_set)) {
$task_set_permission->delete();
if ($this->db->trans_status()) {
$this->db->trans_commit();
$output->result = TRUE;
$output->message = $this->lang->line('admin_task_set_permissions_success_message_deleted');
$this->_action_success();
} else {
$this->db->trans_rollback();
$output->message = $this->lang->line('admin_task_set_permissions_error_message_delete_error');
}
} else {
$this->db->trans_rollback();
$output->message = $this->lang->line('admin_task_set_permissions_error_message_cant_find_task_set_permission_or_is_not_related_to_task_set');
}
} else {
$this->db->trans_rollback();
$output->message = $this->lang->line('lang:admin_task_set_permissions_error_message_cant_find_task_set_or_course');
}
$this->output->set_content_type('application/json');
$this->output->set_output(json_encode($output));
}