I was using new forms for one of my forms, and i wanted to save a
relation.
i came upon an interesting problem along the way. is there a limit in
python on the number of chained function calls or something?
This did not work:
class q_to_q_form(forms.Form):
def __init__(self, columns, question, *args, **kwargs):
super(q_to_q_form, self).__init__(*args, **kwargs)
self.question = question
self.fields['link'] = q2qModelChoiceField(required = False,
queryset = columns, label=question.asked_question)
def save(self):
self.question.options().q_column = self.cleaned_data['link']
self.question.options().q_column.save()
This worked:
class q_to_q_form(forms.Form):
def __init__(self, columns, question, *args, **kwargs):
super(q_to_q_form, self).__init__(*args, **kwargs)
self.options = question.options() ####################This
line############
self.fields['link'] = q2qModelChoiceField(required = False,
queryset = columns, label=question.asked_question)
def save(self):
self.options.q_column = self.cleaned_data['link'] ###########
and this line #########
self.options.save()
all i did was move a function over....
other info that might help
class q2qModelChoiceField(forms.ModelChoiceField):
def label_from_instance(self, obj):
return obj.value
inside my Question model class is method
def options(self):
if ##criteria ##
## other code here ##
elif ## criteria ##
options, created =
some_other_object.objects.get_or_create(question=self)
return options
This confused me for a long time, and baffles me that just moving that
one thing over made it work.
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