gistfile1.py

def post(self, request):
    query = self._build_query(self.DATA)
    qs = self.resource.model.objects.filter(query)
        
    qs_str = pickle.dumps(qs.query)
    h = hashlib.md5(qs_str)
    key = h.hexdigest()
        
    request.session['%s-%s' % (self._get_prefix(), key)] = qs_str; 
        
    return { 'pk' : key }