Cartridge Cart Error

[Josh B]

Not quite sure where or if I broke it. But for some reason any time I try and use the update cart button, either remove or change quantity. It throws an error:

MultiValueDictKeyError at /shop/cart/

"Key 'items-0-id' not found in <QueryDict: {u'update_cart': [u'Update Cart'], u'items-1-quantity': [u'2'], u'items-TOTAL_FORMS': [u'2'], u'items-0-quantity': [u'3'], u'items-INITIAL_FORMS': [u'2'], u'csrfmiddlewaretoken': [u'WHFvD526lOOAvdquvkSlTY5ORQLdyPen'], u'items-MAX_NUM_FORMS': [u'']}>"

Request Method:	POST
Request URL:	http://127.0.0.1:8000/shop/cart/
Django Version:	1.4.2
Exception Type:	MultiValueDictKeyError
Exception Value:	"Key 'items-0-id' not found in <QueryDict: {u'update_cart': [u'Update Cart'], u'items-1-quantity': [u'2'], u'items-TOTAL_FORMS': [u'2'], u'items-0-quantity': [u'3'], u'items-INITIAL_FORMS': [u'2'], u'csrfmiddlewaretoken': [u'WHFvD526lOOAvdquvkSlTY5ORQLdyPen'], u'items-MAX_NUM_FORMS': [u'']}>"

[Ken Bolton]

Hi Josh,

Is that the full stack trace?

ken

[Josh B]

MultiValueDictKeyError at /shop/cart/

"Key 'items-0-id' not found in <QueryDict: {u'items-MAX_NUM_FORMS': [u''], u'items-TOTAL_FORMS': [u'1'], u'items-0-quantity': [u'1'], u'items-INITIAL_FORMS': [u'1'], u'csrfmiddlewaretoken': [u'WHFvD526lOOAvdquvkSlTY5ORQLdyPen'], u'update_cart': [u'Update Cart']}>"

Request Method:	POST
Request URL:	http://127.0.0.1:8000/shop/cart/
Django Version:	1.4.2
Exception Type:	MultiValueDictKeyError

Exception Value:	"Key 'items-0-id' not found in <QueryDict: {u'items-MAX_NUM_FORMS': [u''], u'items-TOTAL_FORMS': [u'1'], u'items-0-quantity': [u'1'], u'items-INITIAL_FORMS': [u'1'], u'csrfmiddlewaretoken': [u'WHFvD526lOOAvdquvkSlTY5ORQLdyPen'], u'update_cart': [u'Update Cart']}>"
Exception Location:	/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/site-packages/django/utils/datastructures.py in __getitem__, line 258
Python Executable:	/Users/jbatchelor/.virtualenvs/puraforce/bin/python
Python Version:	2.7.2
Python Path:	['/Users/jbatchelor/Sites/puraforce-remedies', '/Users/jbatchelor/Sites/puraforce-remedies/puraforce', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/site-packages/pip-1.1-py2.7.egg', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python27.zip', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/plat-darwin', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/plat-mac', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/plat-mac/lib-scriptpackages', '/Users/jbatchelor/.virtualenvs/puraforce/Extras/lib/python', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/lib-tk', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/lib-old', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/site-packages', '/Users/jbatchelor/.virtualenvs/puraforce/lib/python2.7/site-packages/PIL']
Server time:	Wed, 14 Nov 2012 23:03:04 -0700

[Josh B]

I think its related to me adding EXTRA_MODEL_FIELDS.

    (

        "cartridge.shop.models.Product.subcategories",

        "ManyToManyField",

        ("main.SubCategories",),

        {"verbose_name":"Product Sub-Categories",},

    ),

Which fails when I try to create a schemamigration in South. Any ideas? 

[Ken Bolton]

Hi Josh,

Categories, as a sub-class of Page, can already be nested. That field injection example is duplicating existing functionality. You are not the first developer I've seen attempt exactly this before realizing Cartridge already has it.

HTH.

best,

ken

[Geoffrey Sechter]

This error was tripping for me recently. The issue ended up being that when I was customizing my cart template from the base Cartridge provides, I inadvertently deleted the {{ form.id }} tag, resulting in the MultiValueDictKeyError. Adding it back into my template resolved the error.