Django haystack with elasticsearch SearchQuerySet returns None - django

Question

I have default django user model which i want to index using elasticsearch
I'm using django-haystack.
in settings.py
HAYSTACK_SEARCH_RESULTS_PER_PAGE = 12
HAYSTACK_SIGNAL_PROCESSOR = 'haystack.signals.RealtimeSignalProcessor'
HAYSTACK_CONNECTIONS = {
'default': {
'ENGINE': 'haystack.backends.elasticsearch_backend.ElasticsearchSearchEngine',
'URL': 'http://127.0.0.1:9200/',
'INDEX_NAME': 'haystack',
},
}
in search_indexes.py
import datetime
from haystack import indexes
from django.contrib.auth.models import User
class UserIndex(indexes.SearchIndex, indexes.Indexable):
text = indexes.CharField(document=True)
first_name = indexes.CharField(model_attr='first_name', null=True)
last_name = indexes.CharField(model_attr='last_name', null=True)
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()
and build the index using python manage.py rebuild_index
now in shell
from haystack.query import SearchQuerySet
SearchQuerySet().all()
it returns all the indexed objects (I can confirm the count is same as number of entries in db)
when I do
SearchQuerySet().filter(first_name='Wendy') It returns two results object which is again as expected.
but when I try SearchQuerySet().filter(content='Wendy') it returns None.
basically I want to create an API, in which we can pass a query param and return all the user objects that contains this query string in any field.
http://localhost/search/?q=Wendy
This is my first time I'm using Elasticsearch or (anysearch engine with haystack) so I'm not able to understand what is going on.
After little bit search I found few threads on stack overflow which suggests to use Ngram or EdgeNgram but again those also couldn't work.(I rebuilded the whole index). I even tried content_auto in filter but no success.
Any help or lead will be appreciated.
I was following this official docs.
http://django-haystack.readthedocs.org/en/latest/searchqueryset_api.html#quick-start
PS: I wrote here only two fields (firstname, lastname) but there are couple more fields in my actual code. its just to write here.
PPS: I'm using Django 1.9. could that be an issue?
This is how my view looks like
def search_api(request):
query = request.GET.get('q')
sqs = SearchQuerySet().filter(content=query)
data = map(lambda x: x.get_stored_fields(), sqs)
return HttpResponse(json.dumps(data))