Elasticsearch haystack fails search

[nicokant]

Expected Behavior

Searching for "members" should find the default group "Registered Members"

Actual Behavior

Nothing is found, the UI breaks

Steps to Reproduce the Problem

1. create a geonode-project from the branch 3.2
2. add elasticsearch service to the docker-compose.yml

elasticsearch:
  image: elasticsearch:2.4.1
  restart: unless-stopped
  container_name: elasticsearch4${COMPOSE_PROJECT_NAME}
  stdin_open: true

3. enable search with haystack inside .env

HAYSTACK_SEARCH=True
HAYSTACK_ENGINE_URL=http://elasticsearch:9200/

4. start the docker docker-compose up -d --build
5. search for "members"

Specifications

• GeoNode version: 3.2
• Installation method: geonode-project
• Platform: Linux
• Additional details:

The search uses a REST API http://localhost/api/base/search/?abstract__icontains=members&f_method=or&limit=5&offset=0&purpose__icontains=members&q=members which answers with a 404 error with the following json body

{
"error_message": "Sorry, no results on that page.",
"traceback": "Traceback (most recent call last):\n\n  File \"/usr/src/geonode/geonode/api/resourcebase_api.py\", line 493, in get_search\n    page = paginator.page(\n\n  File \"/usr/local/lib/python3.8/site-packages/django/core/paginator.py\", line 70, in page\n    number = self.validate_number(number)\n\n  File \"/usr/local/lib/python3.8/site-packages/django/core/paginator.py\", line 47, in validate_number\n    raise EmptyPage(_('That page number is less than 1'))\n\ndjango.core.paginator.EmptyPage: Quel numero di pagina è minore di 1\n\n\nDuring handling of the above exception, another exception occurred:\n\n\nTraceback (most recent call last):\n\n  File \"/usr/local/lib/python3.8/site-packages/tastypie/resources.py\", line 228, in wrapper\n    response = callback(request, *args, **kwargs)\n\n  File \"/usr/src/geonode/geonode/api/resourcebase_api.py\", line 497, in get_search\n    raise Http404(\"Sorry, no results on that page.\")\n\ndjango.http.response.Http404: Sorry, no results on that page.\n"
}

Using the MITM Proxy I was able to inspect the request made by geonode to elasticsearch, it returns the following body which has the expected hit:

{
"took":118,
"timed_out":false,
"_shards": {"total":5,"successful":5,"failed":0},
"hits":{"total":1,"max_score":null,"hits":[{"_index":"haystack","_type":"modelresult","_id":"1","_score":null,"_source":{"id": 1, "django_ct": "groups.groupprofile", "django_id": "1", "text": "\nRegistered Members\n\n[]", "title": "Registered Members", "title_sortable": "registered members", "description": "", "type": "group", "type_exact": "group", "json": "{\"_type\": \"group\", \"title\": \"Registered Members\", \"description\": \"\", \"keywords\": [], \"thumb\": \"/static/static/img/contact.png\", \"detail\": null}"},"sort":[-9223372036854775808]}]},
"aggregations":{"owner":{"meta":{"_type":"terms"},"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]},"type_exact":{"meta":{"_type":"terms"},"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[{"key":"group","doc_count":1}]},"category_exact":{"meta":{"_type":"terms"},"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]},"keywords_exact":{"meta":{"_type":"terms"},"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]},"subtype_exact":{"meta":{"_type":"terms"},"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]},"regions_exact":{"meta":{"_type":"terms"},"doc_count_error_upper_bound":0,"sum_other_doc_count":0,"buckets":[]}}}