Filter blank CharField in Django Haystack's SearchQuerySet

Question

I need to return all entries in a SearchQuerySet where a certain CharField is blank ie an empty string.

In my search_indexes.py I have:

sometext = indexes.CharField(model_attr='sometext')

I've tried filtering using the usual SQS syntax:

SearchQuerySet().filter(sometext__exact='')
SearchQuerySet().filter(sometext__in=['', None])

Neither return only the blank entries. The first returns all entries, the second returns none at all.

Am I missing something in my SearchIndex definitions? Is there any way this can be done in Haystack using the Whoosh backend?

Answer 1

try this, it works for me:

from haystack.inputs import Raw
r = SearchQuerySet()
r.exclude(sometext=Raw('*'))

Answer 2

你可以这样做：

    SomeQuerySet().filter(sometext='')