I might add that it gives me exactly the same error if I try to fetch a url with a query in it, for example: asdjhakshd/search/?=purple asdjhakshd/search/?=monkey_dishwasher asdjhakshd/search/?=purple+monkey+dishwasher
On 22 Apr, 11:00, tyrrrr <electioneer...@gmail.com> wrote: > Yes. I realise that this is exactly the problem. Do you have some sort > of suggestion as to how one might do this? > My experience with this manager is calling it from the python shell. > I'm not exactly sure how I might do this. > > Something like > > if q > for term in terms: > q_objects.append(Q(name__icontains=term)) > q_objects.append(Q > (description__icontains=term)) > qs = self.get_query_set() > return qs.filter(reduce(operator.or_, q_objects)) > else > do nothing? > > I don't really know what to do :/ > > On 22 Apr, 10:55, Karen Tracey <kmtra...@gmail.com> wrote: > > > On Wed, Apr 22, 2009 at 10:48 AM, tyrrrr <electioneer...@gmail.com> wrote: > > > > this is the error: > > > > reduce() of empty sequence with no initial value > > > > Request Method: GET > > > Request URL: http://dsfffffffffffffffffffff/search/ > > > Exception Type: TypeError > > > Exception Value: reduce() of empty sequence with no initial value > > > Exception Location: /dsfffffffffffffffffffff/models.py in search, > > > line 59 > > > > views.py in searching > > > 68. results = Entry.objects.search(query_string) > > > > models.py in search > > > 59. return qs.filter(reduce(operator.or_, q_objects)) > > > The error implies your q_objects is an empty sequence: > > > >>> import operator > > >>> reduce(operator.or_, ()) > > > Traceback (most recent call last): > > File "<stdin>", line 1, in <module> > > TypeError: reduce() of empty sequence with no initial value > > > Which, looking at your code, seems to be exactly what you'd expect for a url > > that has no q in request.GET. You can't call reduce on an empty sequence, > > so change your code to properly account for when it isn't given anything to > > search for. > > > Karen > > > > On 22 Apr, 09:17, tyrrrr <electioneer...@gmail.com> wrote: > > > > Hi > > > > I am trying to add a search view to an application I wrote in django > > > > but my EntryManager() seems to be getting hung up on the last line of > > > > code when django tries to call the url of the search. > > > > > This EntryManager() (models.py) is excellent for performing searches > > > > in the django shell ($ python manage.py shell) like > > > > > x = Entry.objects.search('spam') > > > > list(x) > > > > > for example > > > > > However when I attempt to visit the url of the search I am met with > > > > the error " reduce() of empty sequence with no initial value " and a > > > > reference to the last line of EntryManager() > > > > > return qs.filter(reduce(operator.or_, q_objects)) > > > > I use this method to strip multiple word queries and place underscores > > > > between the words > > > > > type error: > > > > reduce() of empty sequence with no initial value > > > > > The problems seems to be that the EntryManager() requires a string > > > > from the beginning and I haven't been able to make it work without > > > > one. > > > > > The rest of my code works perfectly. > > > > > Obviously the value will be empty before a query is made. What am I > > > > doing wrong? Is there perhaps a better way to connect my search view > > > > to this object? > > > > > ps: I am aware that this isn't exactly a very efficient, scalable or > > > > long-term solution to my search issue. It is however important that I > > > > get this work as a temporary solution before I move to whoosh/ > > > > haystack. > > > > > Thanks everyone! > > > > > ////////////////////// > > > > models.py > > > > > import operator > > > > from django.db import models > > > > from django.db.models import Q > > > > > class EntryManager(models.Manager): > > > > def search(self, search_terms): > > > > terms = [term.strip() for term in search_terms.split > > > > ()] > > > > q_objects = [] > > > > for term in terms: > > > > q_objects.append(Q(name__icontains=term)) > > > > q_objects.append(Q > > > > (description__icontains=term)) > > > > qs = self.get_query_set() > > > > return qs.filter(reduce(operator.or_, q_objects)) > > > > > ////////////////////// > > > > views.py > > > > > def searching(request): > > > > query_string = '' > > > > if ('q' in request.GET) and request.GET['q'].strip(): > > > > query_string = request.GET['q'].strip() > > > > results = Entry.objects.search(query_string) > > > > return render_to_response("search_results.html", > > > > {'query_string': query_string, 'results' : results}) > > > > > ////////////////////// > > > > search_results.html > > > > > <div>Searched Results</div> > > > > > {%if results%} > > > > {% for e in results%} > > > > <a href=../{{e.slug}}>{{e.name}}</a></div> > > > > {% endfor %} > > > > {% else %} Nothing to see here... > > > > {% endif %} > > > > > ////////////////////// --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. 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