def recalculate_cart(request):
"""
Updates an existing discount code, shipping, and tax when the
cart is modified.
"""
from cartridge.shop import checkout
from cartridge.shop.forms import DiscountForm
from cartridge.shop.models import Cart
# Rebind the cart to request since it's been modified.
if request.session.get('cart') != request.cart.pk:
request.session['cart'] = request.cart.pk
request.cart = Cart.objects.from_request(request)
discount_code = request.session.get("discount_code", "")
if discount_code:
# Clear out any previously defined discount code
# session vars.
names = ("free_shipping", "discount_code", "discount_total")
clear_session(request, *names)
discount_form = DiscountForm(request, {"discount_code": discount_code})
if discount_form.is_valid():
discount_form.set_discount()
handler = lambda s: import_dotted_path(s) if s else lambda *args: None
billship_handler = handler(settings.SHOP_HANDLER_BILLING_SHIPPING)
tax_handler = handler(settings.SHOP_HANDLER_TAX)
try:
if request.session["order"]["step"] >= checkout.CHECKOUT_STEP_FIRST:
billship_handler(request, None)
tax_handler(request, None)
except (checkout.CheckoutError, ValueError, KeyError):
pass
def cart(request, template="shop/cart.html"):
"""
Display cart and handle removing items from the cart.
"""
cart_formset = CartItemFormSet(instance=request.cart)
discount_form = DiscountForm(request, request.POST or None)
if request.method == "POST":
valid = True
if request.POST.get("update_cart"):
valid = request.cart.has_items()
if not valid:
# Session timed out.
info(request, _("Your cart has expired"))
else:
cart_formset = CartItemFormSet(request.POST,
instance=request.cart)
valid = cart_formset.is_valid()
if valid:
cart_formset.save()
recalculate_discount(request)
info(request, _("Cart updated"))
else:
valid = discount_form.is_valid()
if valid:
discount_form.set_discount()
if valid:
return redirect("shop_cart")
context = {"cart_formset": cart_formset}
settings.use_editable()
if (settings.SHOP_DISCOUNT_FIELD_IN_CART and
DiscountCode.objects.active().count() > 0):
context["discount_form"] = discount_form
return render(request, template, context)
def cart(request, template="shop/cart.html"):
"""
Display cart and handle removing items from the cart.
"""
cart_formset = CartItemFormSet(instance=request.cart)
discount_form = DiscountForm(request, request.POST or None)
if request.method == "POST":
valid = True
if request.POST.get("update_cart"):
valid = request.cart.has_items()
if not valid:
# Session timed out.
info(request, _("Your cart has expired"))
else:
cart_formset = CartItemFormSet(request.POST,
instance=request.cart)
valid = cart_formset.is_valid()
if valid:
cart_formset.save()
recalculate_cart(request)
info(request, _("Cart updated"))
else:
# Reset the cart formset so that the cart
# always indicates the correct quantities.
# The user is shown their invalid quantity
# via the error message, which we need to
# copy over to the new formset here.
errors = cart_formset._errors
cart_formset = CartItemFormSet(instance=request.cart)
cart_formset._errors = errors
else:
valid = discount_form.is_valid()
if valid:
discount_form.set_discount()
# Potentially need to set shipping if a discount code
# was previously entered with free shipping, and then
# another was entered (replacing the old) without
# free shipping, *and* the user has already progressed
# to the final checkout step, which they'd go straight
# to when returning to checkout, bypassing billing and
# shipping details step where shipping is normally set.
recalculate_cart(request)
if valid:
return redirect("shop_cart")
context = {"cart_formset": cart_formset}
settings.use_editable()
if (settings.SHOP_DISCOUNT_FIELD_IN_CART
and DiscountCode.objects.active().exists()):
context["discount_form"] = discount_form
return render(request, template, context)
def recalculate_discount(request):
"""
Updates an existing discount code when the cart is modified.
"""
from cartridge.shop.forms import DiscountForm
from cartridge.shop.models import Cart
# Rebind the cart to request since it's been modified.
request.cart = Cart.objects.from_request(request)
discount_code = request.session.get("discount_code", "")
discount_form = DiscountForm(request, {"discount_code": discount_code})
if discount_form.is_valid():
discount_form.set_discount()
else:
try:
del request.session["discount_total"]
except KeyError:
pass
def cart(request, template="shop/cart.html"):
"""
Display cart and handle removing items from the cart.
"""
cart_formset = CartItemFormSet(instance=request.cart)
discount_form = DiscountForm(request, request.POST or None)
if request.method == "POST":
valid = True
if request.POST.get("update_cart"):
valid = request.cart.has_items()
if not valid:
# Session timed out.
info(request, _("Your cart has expired"))
else:
cart_formset = CartItemFormSet(request.POST,
instance=request.cart)
valid = cart_formset.is_valid()
if valid:
cart_formset.save()
recalculate_discount(request)
info(request, _("Cart updated"))
else:
# Reset the cart formset so that the cart
# always indicates the correct quantities.
# The user is shown their invalid quantity
# via the error message, which we need to
# copy over to the new formset here.
errors = cart_formset._errors
cart_formset = CartItemFormSet(instance=request.cart)
cart_formset._errors = errors
else:
valid = discount_form.is_valid()
if valid:
discount_form.set_discount()
if valid:
return redirect("shop_cart")
context = {"cart_formset": cart_formset}
settings.use_editable()
if (settings.SHOP_DISCOUNT_FIELD_IN_CART
and DiscountCode.objects.active().count() > 0):
context["discount_form"] = discount_form
return render(request, template, context)
