I think what you want is the newforms 'prefix' option. I can't seem
to find it in the docs though, so here is an example. It seems a
little strange to be saving forms in the session, and I can't see how
your quantity updates can happen if you don't access POST in the
update_quantity view at all. Here is how I would expect your views to
work, combining them into one. Prefix relies on having a unique
identifier specified for each item, below I treated items like it was
a django model and used the _get_pk_val() method (which returns the
primary key) for the identifier. Since yours are not models, you'll
have to come up with something yourself.
def cart_view(request):
cart = request.session.get('cart',Cart())
if request.POST:
for item in cart.items:
form=FormForItemQuantity(request.POST,prefix=item._get_pk_val())
if form.is_valid():
item.quantity = int(form.cleaned_data['quantity'])
request.session['cart'] = cart
return HttpResponseRedirect('/carts/show/') # redirect after
post
else: # bind form with current values
for item in cart.items:
form=FormForItemQuantity({'quantity':item.quantity},prefix=item._get_pk_val())
return render_to_response('show_cart.html',
{'cart':cart,'num_items': cart.total_items})
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