- chunks = foreign_filter(chunks, arg_or_GET('stage'), 'stage', Chunk.tag_model, 'slug')
- chunks = search_filter(chunks, arg_or_GET('title'), 'book__title')
+ chunks = foreign_filter(chunks, arg_or_GET('stage'), 'stage', Chunk.tag_model)
+ chunks = search_filter(chunks, arg_or_GET('title'), ['book__title', 'title'])
+ chunks = foreign_filter(chunks, arg_or_GET('project'), 'book__project', Project, 'pk')