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 %}
//////////////////////
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