analogueorm / analogue

        // If no relation name was given, we will use this debug backtrace to extract

        // the calling method's name and use that as the relationship name as most

        // of the time this will be what we desire to use for the relationships.

        if (is_null($relation)) {

            list(, $caller) = debug_backtrace(false);

            $relation = $caller['function'];

        }

        // If no foreign key was supplied, we can use a backtrace to guess the proper

        // foreign key name by using the name of the relationship function, which

        // If no name is provided, we will use the backtrace to get the function name

        // since that is most likely the name of the polymorphic interface. We can

        // use that to get both the class and foreign key that will be utilized.

        if (is_null($name)) {

            list(, $caller) = debug_backtrace(false);

            $name = snake_case($caller['function']);

        }

        list($type, $id) = $this->getMorphs($name, $type, $id);