django-haystack + Whoosh SearchQuerySet().all() always None

Question

I am using:

django: 1.9.7
django-haystack: 2.5.0
whoosh: 2.7.4

search_index.py

class ProfileIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.CharField(document=True, use_template=True)
    last_name= indexes.CharField(model_attr='last_name')
    content_auto = indexes.EdgeNgramField(model_attr='first_name')
    def get_model(self):
        return User
    def index_queryset(self, using=None):
        """Used when the entire index for model is updated."""
        return self.get_model().objects.all()

user_text.txt

{{ object.last_name }}

in the views.py i try:
SearchQuerySet().count() => returns 0
SearchQuerySet().all() => returns None

I've read about some issues with the latest Whoosh implementation in django-haystack but i'm not sure if the problem is in my code

Yes , i've changed the structure of the ProfileIndex multiple times (with different model_attr ) , changed the template file , but still no change — lcadc17, Aug 12 '16 at 10:14
When you rebuild the index, it should tell you how many items were indexed. What does it say there? — solarissmoke, Aug 12 '16 at 10:40
Where exactly is your index template (full path)? The most likely issue is that it's in the wrong place. — solarissmoke, Aug 12 '16 at 10:53
templates/search/indexes//user_text.txt (templates is on the same level as manage.py) — lcadc17, Aug 12 '16 at 10:55

score 0 · Accepted Answer · edited May 23 '17 at 12:06

Please see my answer here:

Django Haystack & Whoosh Search Working, But SearchQuerySet Return 0 Results

There is a bug in Django-Haystack with Woosh that means if you use an Ngram or EdgeNGram field SearchQuerySet().count() and SearchQuerySet().all().count() will always return 0 unless you specify a filter.

e.g.

SearchQuerySet().all().count()
>> 0

SearchQuerySet().all().exclude(content='thisshouldnotmatchanything').count()
>> 14 [the total number of indexed objects]

django-haystack + Whoosh SearchQuerySet().all() always None

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