def cart_view(request):
try:
dev_id = request.session['dev_id']
except KeyError:
return HTTPFound(location=request.route_url('error',
error_msg="Could not find device ID. Try scanning an item."))
user = User.get_by_dev_id(dev_id)
return {
'dev_id': dev_id,
'user': user,
'user_cart_items': user.cart.items,
}
def cart_add_view(request):
# can't be passing around User and Item because of their
# ORM nature... passing and using these objects will
# result in a DetachedInstanceError, because the object
# is not bound to a session properly, lazy load
# operation of the cart attribute or whatever will not work.
# So we have to do things this way
user = User.get_by_dev_id(request.session['dev_id'])
item_code = request.session['item_code']
# The user may not have a cart. Let's hook them up.
if not user.cart:
user.cart = Cart()
user.cart.items.append(Item.get_by_code(int(item_code)))
user.put()
transaction.commit()
return HTTPFound(location=request.route_url('cart'))
def item_view(request):
item = Item.get_by_code(int(request.matchdict.get('item_code')))
if item is None:
# There's no item with that ID, so go back home for now
return HTTPFound(location=request.route_url('index'))
dev_id = None
user = None
if request.GET:
dev_id = request.GET['DEV_ID']
user = User.get_by_dev_id(dev_id)
# Store the dev_id for use in cart views
request.session['dev_id'] = dev_id
# Store the item code in case the user tries to add it to cart
request.session['item_code'] = item.code
# Store the user
request.session['user'] = user
return {
'item': item,
'dev_id': dev_id,
'user': user,
}