reverse deleting forms cause Key Error

[elo80ka]

From kipan...@gmail.com on June 16, 2011 01:55:18

What steps will reproduce the problem? 1. Create 2 model formsets:

ParentFormSet = modelformset_factory(Parent, extra=1, can_delete=True, max_num=2)
GuardianFormSet = modelformset_factory(Guardian, extra=1, can_delete=True, max_num=10)

1. Then if I have one instance of Guardian Form, add empty second form and instantly delete first, and then the second, thus having no forms, and press submit. What is the expected output? What do you see instead? Expected: Deletion of Guardian from DB and return of success template
   Got instead: Key error

---

Environment:

Request Method: POST
Request URL: http://127.0.0.1:8000/iep_admin/add_student/5/

Django Version: 1.3
Python Version: 2.7.1
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.flatpages',
'django.contrib.staticfiles',
'django.contrib.webdesign',
'grappelli',
'django.contrib.admin',
'django.contrib.admindocs',
'uni_form',
'pagination',
'south',
'django_coverage',
'smart_selects',
'ajax_filtered_fields',
'ckeditor',
'countries',
'accounts',
'about',
'addresses',
'phones',
'languages',
'races',
'schools',
'persons',
'parents',
'guardians',
'students',
'employee',
'reports',
'iepachieve_app',
'note',
'transitions',
'dajaxice',
'iep_admin',
'iep_panel',
'task',
'meeting']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'pagination.middleware.PaginationMiddleware',
'django.contrib.flatpages.middleware.FlatpageFallbackMiddleware')

Traceback:
File "/home/ki/Envs/iepachieve/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response

1.                     response = callback(request, _callback_args, *_callback_kwargs)
   

   File "/home/ki/code/iepachieve/apps/students/views.py" in add_student

2.     guardian_formset = GuardianFormSet(request.POST, request.FILES, queryset=guardian_queryset, prefix='guardian')
   

   File "/home/ki/Envs/iepachieve/lib/python2.7/site-packages/django/forms/models.py" in init

3.     super(BaseModelFormSet, self).**init**(**defaults)
   

   File "/home/ki/Envs/iepachieve/lib/python2.7/site-packages/django/forms/formsets.py" in init

4.     self._construct_forms()
   

   File "/home/ki/Envs/iepachieve/lib/python2.7/site-packages/django/forms/formsets.py" in _construct_forms

5.         self.forms.append(self._construct_form(i))
   

   File "/home/ki/Envs/iepachieve/lib/python2.7/site-packages/django/forms/models.py" in _construct_form

6.         pk = self.data[pk_key]
   

   File "/home/ki/Envs/iepachieve/lib/python2.7/site-packages/django/utils/datastructures.py" in getitem

7.         raise MultiValueDictKeyError("Key %r not found in %r" % (key, self))
   

Exception Type: MultiValueDictKeyError at /iep_admin/add_student/5/
Exception Value: "Key 'guardian-0-id' not found in <QueryDict: {u'last_name': [u'Belvedersky'], u'classification': [u'ED'], u'grade': [u'2'], u'guardian-1-middle_name': [u''], u'parent-0-race': [u''], u'guardian-1-birth_date': [u'1983-07-06'], u'phone_numbers': [u'1152'], u'guardian-TOTAL_FORMS': [u'2'], u'first_name': [u'Appolon2'], u'parent-0-first_name': [u'Ki4'], u'middle_name': [u''], u'parent-0-language': [u''], u'guardian-INITIAL_FORMS': [u'1'], u'parent-0-last_name': [u'P'], u'csrfmiddlewaretoken': [u'b66057413251cd8b465fb72a6c87ce5a'], u'parent-0-id': [u'11'], u'parent-0-DELETE': [u''], u'parent-INITIAL_FORMS': [u'1'], u'parent-0-gender': [u'm'], u'parent-0-occupation': [u''], u'parent-MAX_NUM_FORMS': [u'2'], u'parent-0-middle_name': [u''], u'parent-0-birth_date': [u'1983-07-06'], u'guardian-1-occupation': [u''], u'guardian-1-last_name': [u'Last'], u'guardian-1-id': [u'17'], u'guardian-1-first_name': [u'Guadian7'], u'guardian-1-race': [u''], u'language': [u''], u'level': [u'2'], u'gender': [u'm'], u'guardian-1-gender': [u'm'], u'race': [u''], u'guardian-1-DELETE': [u'on'], u'parent-TOTAL_FORMS': [u'1'], u'birth_date': [u'2010-11-17'], u'guardian-1-language': [u''], u'guardian-MAX_NUM_FORMS': [u'10']}>"
**************** What version of the product are you using? On what operating system? Please provide any additional information below.

Original issue: http://code.google.com/p/django-dynamic-formset/issues/detail?id=30