Django Haystack and Whoosh: no column exception when sorting -

i have userprofile search index, so:

class userprofileindex(searchindex, indexable):     text = charfield(document=true, use_template=true)     last_name = charfield(model_attr='last_name', indexed=true)     country = charfield(model_attr='country')     sectors = charfield(use_template=true)     services = charfield(use_template=true)      def get_model(self):         return userprofile      def index_queryset(self, using=none):         """         used when entire index model updated."""         return self.get_model().public.all() 

and trying sort last_name field using command:

s = searchqueryset().all().order_by('last_name') 

i back:

exception: no column field 'last_name' 

i have no problems doing filter on field.

s = searchqueryset().filter(last_name='smith') 

works fine.

i'm guessing whoosh issue, can't seem find work around.

not sure if you've solved sake of else comes across this, had same issue , figured out.

if use order_by on field in haystack , whoosh back-end, field ordering must exist on of indexes. not 1 you're interested in. filter doesn't suffer same requirement, why query goes through.