public function delete($tablename, $filter, $filterBindings = null, $useMaster = true, $modifiers = '')
{
$tablename = '`' . str_replace('.', '`.`', trim($tablename, '"\'`')) . '`';
$query = 'DELETE ' . $modifiers . ' FROM ' . $tablename . ' WHERE ' . $filter;
$this->prepare($query, $useMaster);
return $this->execute($filterBindings, $useMaster);
}