/**
* Returns classname in underscored form, with "_id" tacked on at the end.
* This is for use in dealing with foreign keys in the database.
*
* @param string $class_name Class name.
* @param bool $separate_with_underscore Separate with underscore.
*
* @return strong Foreign key
*/
public static function foreign_key($class_name, $separate_with_underscore = true)
{
return sfInflector::underscore(sfInflector::demodulize($class_name)) . ($separate_with_underscore ? "_id" : "id");
}
