def render(self, context, instance, placeholder):
try:
cart = CartModel.objects.get_from_request(context['request'])
context['is_cart_filled'] = cart.items.exists()
render_type = instance.glossary['render_type']
if render_type == 'static':
# update context for static cart with items to be endered as HTML
cart_serializer = CartSerializer(cart, context=context, label='cart', with_items=True)
context['cart'] = cart_serializer.data
elif render_type == 'summary':
# update context for cart summary to be endered as HTML
cart_serializer = CartSerializer(cart, context=context, label='cart')
context['cart'] = cart_serializer.data
except (KeyError, CartModel.DoesNotExist):
pass
return self.super(ShopCartPlugin, self).render(context, instance, placeholder)
def update(self, request, *args, **kwargs):
"""
Handle changing the amount of the cart item referred by its primary key.
"""
cart_item = self.get_object()
context = self.get_serializer_context()
item_serializer = self.item_serializer_class(
cart_item,
context=context,
data=request.data,
label=self.serializer_label)
item_serializer.is_valid(raise_exception=True)
self.perform_update(item_serializer)
cart_serializer = CartSerializer(cart_item.cart,
context=context,
label='cart')
response_data = {
'cart_item': item_serializer.data,
'cart': cart_serializer.data,
}
return Response(data=response_data)