MultiValueDictKeyError at /dashboard/catalogue/products/90/ "u'stockrecords-0-id'"

[Chris L]

In my application, I create a required stockrecord for each partner a user is associated with.

I have excluded the partner field from stock records, and I set it myself manually inside dashboard/catalgoue/views.py process_all_forms() which looks like this:

        stockrecord_formset = self.stockrecord_formset(

            self.product_class, self.request.user,

            self.request.POST, instance=self.object)

        i = 0

        for form in stockrecord_formset:

            stockrecord = form.save(commit=False)

            stockrecord.partner = stockrecord_formset.get_warehouse(i)

            stockrecord.save()

            i += 1

This works fine when creating a new product, however, if I edit a product, change nothing, then hit 'Save' I get this MultiValueDictKeyError. I am not sure what exactly is going on here, so any help would be appreciated.

Traceback:

Environment:

Request Method: POST

Request URL: http://127.0.0.1:8000/dashboard/catalogue/products/90/

Django Version: 1.6.1

Python Version: 2.7.5

Installed Applications:

['django.contrib.auth',

 'django.contrib.admin',

 'django.contrib.contenttypes',

 'django.contrib.sessions',

 'django.contrib.sites',

 'django.contrib.messages',

 'django.contrib.flatpages',

 'django.contrib.staticfiles',

 'oscar.apps.dashboard.pages',

 'oscar.apps.dashboard.reviews',

 'south',

 'compressor',

 'oscar',

 'oscar.apps.analytics',

 'oscar.apps.checkout',

 'oscar.apps.address',

 'oscar.apps.shipping',

 'catalogue',

 'oscar.apps.catalogue.reviews',

 'partner',

 'oscar.apps.basket',

 'oscar.apps.payment',

 'oscar.apps.offer',

 'oscar.apps.order',

 'customer',

 'oscar.apps.promotions',

 'oscar.apps.search',

 'oscar.apps.voucher',

 'oscar.apps.wishlists',

 'dashboard',

 'oscar.apps.dashboard.reports',

 'oscar.apps.dashboard.users',

 'oscar.apps.dashboard.orders',

 'oscar.apps.dashboard.promotions',

 'dashboard.catalogue',

 'oscar.apps.dashboard.offers',

 'dashboard.partners',

 'oscar.apps.dashboard.pages',

 'oscar.apps.dashboard.ranges',

 'oscar.apps.dashboard.reviews',

 'oscar.apps.dashboard.vouchers',

 'oscar.apps.dashboard.communications',

 'haystack',

 'treebeard',

 'sorl.thumbnail']

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',

 'oscar.apps.basket.middleware.BasketMiddleware',

 'django.contrib.flatpages.middleware.FlatpageFallbackMiddleware')

Traceback:

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response

  114.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view

  22.                 return view_func(request, *args, **kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view

  22.                 return view_func(request, *args, **kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/views/generic/base.py" in view

  69.             return self.dispatch(request, *args, **kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch

  87.         return handler(request, *args, **kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/views/generic/edit.py" in post

  228.         return super(BaseUpdateView, self).post(request, *args, **kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/views/generic/edit.py" in post

  171.             return self.form_valid(form)

File "/home/suprafly/TradeWinds_project/TradeWinds/dashboard/catalogue/views.py" in form_valid

  240.         return self.process_all_forms(form)

File "/home/suprafly/TradeWinds_project/TradeWinds/dashboard/catalogue/views.py" in process_all_forms

  259.         self.add_warehouse_to_forms(stockrecord_formset)

File "/home/suprafly/TradeWinds_project/TradeWinds/dashboard/catalogue/views.py" in add_warehouse_to_forms

  293.         for form in stockrecord_formset:

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/forms/formsets.py" in __iter__

  65.         return iter(self.forms)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/utils/functional.py" in __get__

  49.         res = instance.__dict__[self.func.__name__] = self.func(instance)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/forms/formsets.py" in forms

  133.         forms = [self._construct_form(i) for i in xrange(self.total_form_count())]

File "/home/suprafly/TradeWinds_project/TradeWinds/dashboard/catalogue/forms.py" in _construct_form

  151.                 i, **kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/forms/models.py" in _construct_form

  848.         form = super(BaseInlineFormSet, self)._construct_form(i, **kwargs)

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/forms/models.py" in _construct_form

  564.             pk = self.data[pk_key]

File "/home/suprafly/Envs/TradeWinds/local/lib/python2.7/site-packages/django/utils/datastructures.py" in __getitem__

  301.             raise MultiValueDictKeyError(repr(key))

Exception Type: MultiValueDictKeyError at /dashboard/catalogue/products/90/

Exception Value: "u'stockrecords-0-id'"

[Maik Hoepfel]

Hi Chris,

MultiValueDictKeyError is just the exception a MultiValueDict throws
where are normal dict would throw a regular KeyError. So
'stockrecords-0-id' is missing from the POST data. I think that's a
hidden field Django formsets normally render out. I'd presume the issue
is rooted in your customisations somewhere.

Regards,

Maik

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[Chris L]

Thanks for the insight Maik. I suppose it is from my customizations, too, but it's unclear how.

I also stumbled across this: http://stackoverflow.com/questions/19741314/multivaluedictkeyerror-in-django-admin

Which is interesting, because that's the exact problem I am experiencing, but from the dashboard and not the admin.

> <mailto:django-oscar+unsub...@googlegroups.com>.

[Chris L]

Finally figured this one out!

The problem was in the product_update.html template, I had removed the line:

                                                {% include "partials/form_field.html" with field=stockrecord_form.id nolabel=True %}

But, this is apparently essential to the POST data.

On Sunday, April 27, 2014 5:37:45 AM UTC-7, Maik Hoepfel wrote:

> <mailto:django-oscar+unsub...@googlegroups.com>.