Is it possible to have custom URL/permalink for child posts depending on the "mother" post?
- Music Festivals
- Photo galleries
For the music festival I would have a URL like /the-music-festival/ and for each photo gallery I would have /the-music-festival/photos/the-gallery/
I could also have a gallery NOT belonging to any festival, so the URL would be /photos/the-gallery/
Depending on either the gallery belongs, or not, to a specific festival I would show different template/navigation on my theme.