Hi,
I have instances in my code where I need to save an object with a new
pk. Then I need to create and save an inline formset using the newly
created object as the instance.
form_instance = form.save(commit=False)
form_instance.pk = None
form_instance.slug = None
form_instance.save()
CardioFormset = inlineformset_factory(activitycentre_models.Activity,
activitycentre_models.CardiovascularTraining)
cardio_form = CardioFormset(request.POST, instance=form_instance) #
This is the line that raises the IndexError exception.
Could anyone shed any light as to where I am going wrong here? It is
fine if I just save the form normally first (update).
Much appreciated for any help on this issue!
Traceback (most recent call last):
File "/Library/Python/2.5/site-packages/code/contrib/activitycentre/
views.py", line 1711, in create_edit_event
cardio_form = InitialCardioFormset(request.POST, instance=a)
File "/Library/Python/2.5/site-packages/django/forms/models.py",
line 446, in __init__
super(BaseInlineFormSet, self).__init__(data, files, prefix=prefix
or self.rel_name)
File "/Library/Python/2.5/site-packages/django/forms/models.py",
line 335, in __init__
super(BaseModelFormSet, self).__init__(**defaults)
File "/Library/Python/2.5/site-packages/django/forms/formsets.py",
line 67, in __init__
self._construct_forms()
File "/Library/Python/2.5/site-packages/django/forms/models.py",
line 452, in _construct_forms
super(BaseInlineFormSet, self)._construct_forms()
File "/Library/Python/2.5/site-packages/django/forms/formsets.py",
line 76, in _construct_forms
self.forms.append(self._construct_form(i))
File "/Library/Python/2.5/site-packages/django/forms/models.py",
line 455, in _construct_form
form = super(BaseInlineFormSet, self)._construct_form(i, **kwargs)
File "/Library/Python/2.5/site-packages/django/forms/models.py",
line 339, in _construct_form
kwargs['instance'] = self.get_queryset()[i]
File "/Library/Python/2.5/site-packages/django/db/models/query.py",
line 232, in __getitem__
return list(qs)[0]
IndexError: list index out of range
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