Converts child_path to a path relative to filter. That is, child_path
points to a path in the child model. The rerturned path will point to the
same row in the filtered model. If child_path isn't a valid path on the
child model or points to a row which is not visible in filter, then NULL
is returned.
Since 2.4
Converts child_path to a path relative to filter. That is, child_path points to a path in the child model. The rerturned path will point to the same row in the filtered model. If child_path isn't a valid path on the child model or points to a row which is not visible in filter, then NULL is returned. Since 2.4