pbp_com/apps/darkroom/index.py

from djapian import space, Indexer, CompositeIndexer

from darkroom.models import Photo

class PhotoIndexer(Indexer):
    tags = [
        ('title', 'title'),
    ]
    fields = ['description']

space.add_index(Photo, PhotoIndexer, attach_as='indexer')

complete_indexer=CompositeIndexer(Photo.indexer)