Django admin keyword search

django_admin_keyword_search.py

def search_view(request):
  if request.GET.get('q', None):
    django_admin_keyword_search(User, request.GET['q'], ['search_field_1', 'search_field_2'])


def django_admin_keyword_search(model, keywords, search_fields):
    all_queries = None

    for keyword in keywords.split(' '):  # breaks query_string into 'Foo' and 'Bar'
        keyword_query = None

        for field in search_fields:
            each_query = Q(**{field + '__icontains': keyword})

            if not keyword_query:
                keyword_query = each_query
            else:
                keyword_query = keyword_query | each_query

        if not all_queries:
            all_queries = keyword_query
        else:
            all_queries = all_queries & keyword_query

    result_set = model.objects.filter(all_queries).distinct()

    return result_set