'StockRecord' object has no attribute 'set_amazon_supply_quantity'

[natea]

When I try to 'Update product stock' in the MWS dashboard menu, the following error occurs:

Environment:

Request Method: POST
Request URL: http://localhost:8000/en-us/dashboard/profiles/

Django Version: 1.6.5
Python Version: 2.7.6
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.flatpages',
 'django.contrib.admin',
 'compressor',
 'south',
 'django_extensions',
 'oscar_mws',
 'oscar',
 'oscar.apps.analytics',
 'oscar.apps.checkout',
 'oscar.apps.address',
 'oscar.apps.shipping',
 'oscar.apps.catalogue',
 'oscar.apps.catalogue.reviews',
 'oscar.apps.partner',
 'oscar.apps.basket',
 'oscar.apps.payment',
 'oscar.apps.offer',
 'oscar.apps.order',
 'oscar.apps.customer',
 'oscar.apps.promotions',
 'oscar.apps.search',
 'oscar.apps.voucher',
 'oscar.apps.wishlists',
 'oscar.apps.dashboard',
 'oscar.apps.dashboard.reports',
 'oscar.apps.dashboard.users',
 'oscar.apps.dashboard.orders',
 'oscar.apps.dashboard.promotions',
 'oscar.apps.dashboard.catalogue',
 'oscar.apps.dashboard.offers',
 'oscar.apps.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',
 'django.middleware.transaction.TransactionMiddleware',
 'oscar.apps.basket.middleware.BasketMiddleware')

Traceback:
File "/Users/nateaune/.virtualenvs/django-oscar-mws/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  112.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/nateaune/.virtualenvs/django-oscar-mws/lib/python2.7/site-packages/django/db/transaction.py" in inner
  371.                 return func(*args, **kwargs)
File "/Users/nateaune/.virtualenvs/django-oscar-mws/lib/python2.7/site-packages/django_oscar-0.7.1-py2.7.egg/oscar/views/decorators.py" in _checklogin
  32.             return view_func(request, *args, **kwargs)
File "/Users/nateaune/.virtualenvs/django-oscar-mws/lib/python2.7/site-packages/django/views/generic/base.py" in view
  69.             return self.dispatch(request, *args, **kwargs)
File "/Users/nateaune/.virtualenvs/django-oscar-mws/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch
  87.         return handler(request, *args, **kwargs)
File "/Users/nateaune/Dropbox/code/django-oscar-mws/oscar_mws/dashboard/views.py" in post
  186.             return self.form_valid(form)
File "/Users/nateaune/Dropbox/code/django-oscar-mws/oscar_mws/dashboard/views.py" in form_valid
  171.             getattr(self, 'handle_{0}'.format(selected))(marketplace, form)
File "/Users/nateaune/Dropbox/code/django-oscar-mws/oscar_mws/dashboard/views.py" in handle_update_stock
  78.             update_inventory(products)
File "/Users/nateaune/Dropbox/code/django-oscar-mws/oscar_mws/fulfillment/gateway.py" in update_inventory
  353.                 stockrecord.set_amazon_supply_quantity(quantity, commit=False)

Exception Type: AttributeError at /en-us/dashboard/profiles/
Exception Value: 'StockRecord' object has no attribute 'set_amazon_supply_quantity'

[roadsideseb]

I'll take a look at that tomorrow, it's either a bug or something that should be in the docs. I'll try and correct it either way.

[natea]

Any luck?

[roadsideseb]

Not yet, I'll be on my way to work shortly and take a look at that.

[roadsideseb]

I've taken a look at this and this is actually just another indicator of lack in documentation. For the handling/tracking of stock in MWS, the StockRecord from Oscar has to be extended to hand over responsibility of stock tracking to MWS. I've added a section to the docs that describes how to use the AmazonStockTrackingMixin that provides a default implementation of that. If your set up is more complex than that with different types of fulfillment partners, you might have to customise them to your specific needs.