form error using cleaned data - django

Question

I am trying to modify an app that I have found on the net in order to create surveys but I am getting an error that I do not manage to solve
form.py:
def save(self, commit=True):
import pdb; pdb.set_trace()
""" Save the response object """
# Recover an existing response from the database if any
#  There is only one response by logged user.
response = self._get_preexisting_response()
if response is None:
response = super(ResponseForm, self).save(commit=False)
response.survey = self.survey
response.interview_uuid = self.uuid
if self.user.is_authenticated():
response.user = self.user
response.save()
# response "raw" data as dict (for signal)
data = {
'survey_id': response.survey.id,
'interview_uuid': response.interview_uuid,
'responses': []
}
# create an answer object for each question and associate it with this
# response.
for field_name, field_value in self.cleaned_data.items():
if field_name.startswith("question_"):
# warning: this way of extracting the id is very fragile and
# entirely dependent on the way the question_id is encoded in
# the field name in the __init__ method of this form class.
q_id = int(field_name.split("_")[1])
question = Question.objects.get(pk=q_id)
answer = self._get_preexisting_answer(question)
if answer is None:
answer = Answer(question=question)
if question.type == Question.SELECT_IMAGE:
value, img_src = field_value.split(":", 1)
# TODO
answer.body = field_value
data['responses'].append((answer.question.id, answer.body))
LOGGER.debug(
"Creating answer for question %d of type %s : %s", q_id,
answer.question.type, field_value
)
answer.response = response
answer.save()
survey_completed.send(sender=Response, instance=response, data=data)
return response
views.py
class SurveyDetail(View):
#import pdb; pdb.set_trace()
def get(self, request, *args, **kwargs):
survey = get_object_or_404(Survey, is_published=True, id=kwargs['id'])
if survey.template is not None and len(survey.template) > 4:
template_name = survey.template
else:
if survey.display_by_question:
template_name = 'survey/survey.html'
else:
template_name = 'survey/one_page_survey.html'
if survey.need_logged_user and not request.user.is_authenticated():
return redirect('%s?next=%s' % (settings.LOGIN_URL, request.path))
categories = Category.objects.filter(survey=survey).order_by('order')
form = ResponseForm(survey=survey, user=request.user,
step=kwargs.get('step', 0))
context = {
'response_form': form,
'survey': survey,
'categories': categories,
}
return render(request, template_name, context)
def post(self, request, *args, **kwargs):
import pdb; pdb.set_trace()
survey = get_object_or_404(Survey, is_published=True, id=kwargs['id'])
if survey.need_logged_user and not request.user.is_authenticated():
return redirect('%s?next=%s' % (settings.LOGIN_URL, request.path))
categories = Category.objects.filter(survey=survey).order_by('order')
form = ResponseForm(request.POST, survey=survey, user=request.user,
step=kwargs.get('step', 0))
context = {'response_form': form, 'survey': survey,
'categories': categories}
if form.is_valid():
session_key = 'survey_%s' % (kwargs['id'],)
if session_key not in request.session:
request.session[session_key] = {}
for key, value in form.cleaned_data.items():
request.session[session_key][key] = value
request.session.modified = True
next_url = form.next_step_url()
response = None
if survey.display_by_question:
if form.has_next_step():
save_form = ResponseForm(request.session[session_key],
survey=survey, user=request.user)
response = save_form.save(request)
else:
response = form.save()
if next_url is not None:
return redirect(next_url)
else:
del request.session[session_key]
if response is None:
return redirect('/')
else:
next_ = request.session.get('next', None)
if next_ is not None:
if 'next' in request.session:
del request.session['next']
return redirect(next_)
else:
return redirect('survey-confirmation',
uuid=response.interview_uuid)
if survey.template is not None and len(survey.template) > 4:
template_name = survey.template
else:
if survey.display_by_question:
template_name = 'survey/survey.html'
else:
template_name = 'survey/one_page_survey.html'
return render(request, template_name, context)
the weired thing is that I get the error AttributeError: 'ResponseForm' object has no attribute 'cleaned_data' even if the form got the is_valid attribute

Answer 1

.cleaned_data is only available once you call .is_valid() on the form.
Most likely you haven't called is_valid() on the form in your view yet.