In an HTTP request, the query parameters are separated by the ampersand. A form that has the fields, say, name and email, when submitted via GET, the query string will look like "name=myname&email=s...@email.com". Since your html is using literal '&', Django(and any other request parser) will think of it as the standard delimiter, and will typically split the query string on '&'. That is why your code is breaking.
There are multiple solutions. The simplest I can think of is to use "&" - without the quotes and WITH the semicolon - whenever you need an ampersand (&) in your HTML. That should fix this. There are other ways, like percentage encoding ( http://www.blooberry.com/indexdot/html/topics/urlencoding.htm) you can use when you need to generate URLs that contain a literal ampersand. On Mon, Mar 12, 2012 at 1:48 PM, Nikhil Verma <varma.nikhi...@gmail.com>wrote: > I have a function in views.py > > def get_interview_type(request): > i = None > title = request.GET['title'] #Here the title becomes different > try: > i = Interview.objects.get(title=title) #it looks for that > dropdown value > #Error according to pdb > #-> i = Interview.objects.get(title=title) > # (Pdb) > # DoesNotExist: DoesNotE...exist.',) > > if i.interview_type == "Time Series": > visit_ids = i.visit_set.all() > reference_visit_list = [] > for visit in visit_ids: > reference_visit_list.append(visit.reference_visit) > reference_visit_list.extend(visit_ids) > list(set(reference_visit_list)) > len_visits=filter(None,reference_visit_list) > total_visits = len(len_visits) > return render_to_response('export/get_details.html', > > {'visits':visit_ids,'count':visit_ids.count(), > 'total_visits':total_visits}, > > context_instance=RequestContext(request) > ) > else: > return > render_to_response('export/get_interview_type.html', > {'visits':i.visit_set.all()}, > > context_instance=RequestContext(request) > ) > except Interview.DoesNotExist: > pass > > When the user selects a title from the dropdown this function is called > and does it tasks. > Now i have entered a string which include '&' ampersand thinking that it > can play a role of 'and' in normal english like this :- > > 'CI-2-UGI & Bowel Symptom Screening & Characterization'(It is one of that > dropdown value) > Now when user selects this value from dropdown the title does not remain > the same, instead the title changes to CI-2-UGI(in title = > request.GET['title']) and before the function executes i recieve a 500 > error page. > This is what the error prints in runserver mode > > > /home/user/cpms/careprep/tags/4.0/careprep/export/views.py(66)get_interview_type()->None > -> pass > (Pdb) c > [11/Mar/2012 22:05:20] "GET > /export/get_interview_type/?title=CI-2-UGI%20&%20Bowel%20Symptom%20Screening%20&%20Characterization > HTTP/1.1" 500 64490 > > Also when i remove that '&'ampersand from the title there is no 500 page. > > Now & is breaks the quesrystring what i know then how to solve the > problem. I try having a look to url -encode but no luck . > > I want whatever the drop value contains (&,@ ....etc) it should not break > ? How to solve the problem ? > > Thanks in advance > > -- > Regards > Nikhil Verma > +91-958-273-3156 > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-users@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > -- Yati Sagade <http://twitter.com/yati_itay> (@yati_itay <http://twitter.com/yati_itay>) -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
