Django-admin-like configurable search view

gistfile1.txt

from django.db.models import Q
from django.views.generic import ListView
import itertools

class BaseSearchView(ListView):
    search_fields = []
    def get_search_fields(self):
        return self.search_fields

    query_key = 'q'
    def get_query_key(self):
        return self.query_key

    def get_query(self):
        query = self.request.GET.get(self.get_query_key(),'')
        words = [w.strip().lower() for w in query.split(' ') if w]
        or_queries = [Q(**{f + "__icontains": w}) \
             for w, f in \
             itertools.product(words, self.get_search_fields())]
        if len(or_queries) > 1:
            total_q = reduce(lambda a, b: a | b, or_queries)
        elif len(or_queries) == 1:
            total_q = or_queries[0]
        else:
            total_q = None
        return total_q

    def get_queryset(self):
        query = self.get_query()
        if query:
            result = self.model.objects.all()
        else:
            result = self.model.objects.filter(query)
        return result

class DemoModelSearch(BaseSearchView):
    model = DemoModel
    search_fields = ['name','text_body','description',
                     'directory__title',
        'owner__name','owner__email','owner__group__name']

    def get_query(self):
        query = super(DemoModelSearch, self).get_query()
        final_query = Q(is_active__exact= True)
        if query:
            final_query &= query
        return final_query