Django NoReverseMatch at /search/ - django

Question

In a search form, users can choose some of the criteria (country, province and city) and post it the result to this view:
def profile_search(request):
if request.method == 'POST':
form = AdvancedSearchForm(request.POST)
if form.is_valid():
cd = form.cleaned_data
country=cd['country']
province=cd['province']
city = cd['city']
params=( country, province, city ,)
url = reverse('userprofile.views.profile_search_result', args= params)
return HttpResponseRedirect(url)
args = {}
args.update(csrf(request))
return HttpResponseRedirect("/result/ایران")
Which is supposed to be found by one of these url patterns:
url(r'^result/(?P<country>\w+)/(?P<province>\w+)/(?P<city>\w+)', 'userprofile.views.profile_search_result'),
url(r'^result/(?P<country>\w+)/$','userprofile.views.profile_search_result'),
However, no matter what criteria are chosen in the search form, I get errors like:
Reverse for 'userprofile.views.profile_search_result' with arguments '(u'\u0627\u06cc\u0631\u0627\u0646', u'\u0627\u0644\u0628\u0631\u0632', u'')' and keyword arguments '{}' not found. 2 pattern(s) tried: ['result/(?P<country>\\w+)/$', 'result/(?P<country>\\w+)/(?P<province>\\w+)/(?P<city>\\w+)']
How to fix this?

Answer 1

You have two problems.
Firstly, \w does not match the Arabic characters you are using in your params - it's equivalent to [A-Za-z0-9] only. You will need to explicitly use the Unicode codepoints for the characters you want to match, or alternatively a much more general .:
r'^result/(?P<country>.+)/(?P<province>.+)/(?P<city>.+)'
Secondly, in your pattern the city parameter is required, but you are passing an empty string. You should probably define a third pattern that omits that parameter:
r'^result/(?P<country>.+)/(?P<province>.+)'
But note that I don't recommend doing any of that. Rather than submitting your form as a POST and redirecting to a second view with URL parameters to actually do the search, you should simply use a GET action in your form and submit it straight to the search_result view, where you get the search query from request.GET.

Answer 2

try this line in urls.py
url(r'^result/(?P<country>.*)/$','userprofile.views.profile_search_result'),
this is sample of using unicode chars in my application:
urls.py
urlpatterns += patterns('pin.views',
url(r'^(?P<user_namefl>.*)/followers/$', 'absuser_followers', name='pin-absuser-followers'),
url(r'^(?P<user_namefg>.*)/following/$', 'absuser_friends', name='pin-absuser-following'),
url(r'^(?P<user_namel>.*)/likes/$', 'absuser_like', name='pin-absuser-like'),
url(r'^(?P<user_name>.*)/$', 'absuser', name='pin-absuser'),
)
links from html pages
<a href="{% url "pin-absuser" username %}">
with reverse in views or models
reverse("pin-absuser", args=["وحید"])

Answer 3

To use reverse(), you need to give the url a name, and use it in the reverse function - see documentation.
Example in urls.py:
url(r'^result/(?P<country>\w+)/(?P<province>\w+)/(?P<city>\w+)', 'userprofile.views.profile_search_result', name='search_results'),
Example call:
url = reverse('search_results', args= params)