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views.py
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views.py
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# django imports
from django.conf import settings
from django.core.exceptions import ObjectDoesNotExist
from django.core.urlresolvers import reverse
from django.http import Http404
from django.http import HttpResponse
from django.http import HttpResponseRedirect
from django.shortcuts import render_to_response
from django.template.loader import render_to_string
from django.template import RequestContext
from django.utils import simplejson
from django.utils.translation import ugettext_lazy as _
# lfs imports
import lfs.cart.utils
import lfs.catalog.utils
import lfs.voucher.utils
import lfs.discounts.utils
from lfs.caching.utils import lfs_get_object_or_404
from lfs.core.signals import cart_changed
from lfs.core import utils as core_utils
from lfs.catalog.models import Product
from lfs.catalog.models import Property
from lfs.catalog.settings import QUANTITY_FIELD_INTEGER
from lfs.cart import utils as cart_utils
from lfs.cart.models import CartItem
from lfs.core.models import Country
from lfs.core.utils import l10n_float
from lfs.core.utils import LazyEncoder
from lfs.shipping import utils as shipping_utils
from lfs.payment import utils as payment_utils
from lfs.customer import utils as customer_utils
from lfs.voucher.models import Voucher
from lfs.voucher.settings import MESSAGES
def cart(request, template_name="lfs/cart/cart.html"):
"""
The main view of the cart.
"""
return render_to_response(template_name, RequestContext(request, {
"voucher_number": lfs.voucher.utils.get_current_voucher_number(request),
"cart_inline": cart_inline(request),
}))
def cart_inline(request, template_name="lfs/cart/cart_inline.html"):
"""
The actual content of the cart.
This is factored out to be reused within 'normal' and ajax requests.
"""
cart = cart_utils.get_cart(request)
shopping_url = lfs.cart.utils.get_go_on_shopping_url(request)
if cart is None:
return render_to_string(template_name, RequestContext(request, {
"shopping_url": shopping_url,
}))
shop = core_utils.get_default_shop(request)
countries = shop.shipping_countries.all()
selected_country = shipping_utils.get_selected_shipping_country(request)
# Get default shipping method, so that we have a one in any case.
selected_shipping_method = shipping_utils.get_selected_shipping_method(request)
selected_payment_method = payment_utils.get_selected_payment_method(request)
shipping_costs = shipping_utils.get_shipping_costs(request, selected_shipping_method)
# Payment
payment_costs = payment_utils.get_payment_costs(request, selected_payment_method)
# Cart costs
cart_price = cart.get_price_gross(request) + shipping_costs["price"] + payment_costs["price"]
cart_tax = cart.get_tax(request) + shipping_costs["tax"] + payment_costs["tax"]
# Discounts
discounts = lfs.discounts.utils.get_valid_discounts(request)
for discount in discounts:
cart_price = cart_price - discount["price"]
# Voucher
voucher_number = lfs.voucher.utils.get_current_voucher_number(request)
try:
voucher = Voucher.objects.get(number=voucher_number)
except Voucher.DoesNotExist:
display_voucher = False
voucher_value = 0
voucher_tax = 0
voucher_message = MESSAGES[6]
else:
lfs.voucher.utils.set_current_voucher_number(request, voucher_number)
is_voucher_effective, voucher_message = voucher.is_effective(cart)
if is_voucher_effective:
display_voucher = True
voucher_value = voucher.get_price_gross(cart)
cart_price = cart_price - voucher_value
voucher_tax = voucher.get_tax(cart)
else:
display_voucher = False
voucher_value = 0
voucher_tax = 0
# Calc delivery time for cart (which is the maximum of all cart items)
max_delivery_time = cart.get_delivery_time(request)
cart_items = []
for cart_item in cart.get_items():
product = cart_item.product
quantity = product.get_clean_quantity(cart_item.amount)
cart_items.append({
"obj": cart_item,
"quantity": quantity,
"product": product,
"product_price_net": cart_item.get_price_net(request),
"product_price_gross": cart_item.get_price_gross(request),
"product_tax": cart_item.get_tax(request),
})
return render_to_string(template_name, RequestContext(request, {
"cart_items": cart_items,
"cart_price": cart_price,
"cart_tax": cart_tax,
"shipping_methods": shipping_utils.get_valid_shipping_methods(request),
"selected_shipping_method": selected_shipping_method,
"shipping_price": shipping_costs["price"],
"payment_methods": payment_utils.get_valid_payment_methods(request),
"selected_payment_method": selected_payment_method,
"payment_price": payment_costs["price"],
"countries": countries,
"selected_country": selected_country,
"max_delivery_time": max_delivery_time,
"shopping_url": shopping_url,
"discounts": discounts,
"display_voucher": display_voucher,
"voucher_number": voucher_number,
"voucher_value": voucher_value,
"voucher_tax": voucher_tax,
"voucher_number": lfs.voucher.utils.get_current_voucher_number(request),
"voucher_message": voucher_message,
}))
def added_to_cart(request, template_name="lfs/cart/added_to_cart.html"):
"""
Displays the product that has been added to the cart along with the
selected accessories.
"""
cart_items = request.session.get("cart_items", [])
try:
accessories = cart_items[0].product.get_accessories()
except IndexError:
accessories = []
return render_to_response(template_name, RequestContext(request, {
"plural": len(cart_items) > 1,
"shopping_url": request.META.get("HTTP_REFERER", "/"),
"product_accessories": accessories,
"cart_items": added_to_cart_items(request),
}))
def added_to_cart_items(request, template_name="lfs/cart/added_to_cart_items.html"):
"""
Displays the added items for the added-to-cart view.
"""
total = 0
cart_items = []
for cart_item in request.session.get("cart_items", []):
total += cart_item.get_price_gross(request)
product = cart_item.product
quantity = product.get_clean_quantity(cart_item.amount)
cart_items.append({
"product": product,
"obj": cart_item,
"quantity": quantity,
"product_price_net": cart_item.get_price_net(request),
"product_price_gross": cart_item.get_price_gross(request),
"product_tax": cart_item.get_tax(request),
})
return render_to_string(template_name, RequestContext(request, {
"total": total,
"cart_items": cart_items,
}))
# Actions
def add_accessory_to_cart(request, product_id, quantity=1):
"""
Adds the product with passed product_id as an accessory to the cart and
updates the added-to-cart view.
"""
try:
quantity = float(quantity)
except TypeError:
quantity = 1
product = lfs_get_object_or_404(Product, pk=product_id)
session_cart_items = request.session.get("cart_items", [])
cart = cart_utils.get_cart(request)
cart_item = cart.add(product=product, amount=quantity)
# Update session
if cart_item not in session_cart_items:
session_cart_items.append(cart_item)
else:
for session_cart_item in session_cart_items:
if cart_item.product == session_cart_item.product:
session_cart_item.amount += quantity
request.session["cart_items"] = session_cart_items
cart_changed.send(cart, request=request)
return HttpResponse(added_to_cart_items(request))
def add_to_cart(request, product_id=None):
"""
Adds the passed product with passed product_id to the cart after
some validations have been taken place. The amount is taken from the query
string.
"""
if product_id is None:
product_id = request.REQUEST.get("product_id")
product = lfs_get_object_or_404(Product, pk=product_id)
# Only active and deliverable products can be added to the cart.
if (product.is_active() and product.deliverable) == False:
raise Http404()
try:
quantity = float(request.POST.get("quantity", 1.0))
except (TypeError, ValueError):
quantity = 1.0
# Validate properties (They are added below)
properties_dict = {}
if product.is_configurable_product():
for key, value in request.POST.items():
if key.startswith("property-"):
try:
property_id = key.split("-")[1]
except IndexError:
continue
try:
property = Property.objects.get(pk=property_id)
except Property.DoesNotExist:
continue
if property.is_number_field:
value = l10n_float(value)
properties_dict[property_id] = unicode(value)
# validate property's value
if property.is_number_field:
if (value < property.unit_min) or (value > property.unit_max):
msg = _(u"%(name)s must be between %(min)s and %(max)s %(unit)s.") % {"name": property.title, "min": property.unit_min, "max": property.unit_max, "unit": property.unit}
return lfs.core.utils.set_message_cookie(
product.get_absolute_url(), msg)
# calculate valid steps
steps = []
x = property.unit_min
while x < property.unit_max:
steps.append("%.2f" % x)
x = x + property.unit_step
steps.append("%.2f" % property.unit_max)
value = "%.2f" % value
if value not in steps:
msg = _(u"Your entered value for %(name)s (%(value)s) is not in valid step width, which is %(step)s.") % {"name": property.title, "value": value, "step": property.unit_step}
return lfs.core.utils.set_message_cookie(
product.get_absolute_url(), msg)
if product.active_packing_unit:
quantity = lfs.catalog.utils.calculate_real_amount(product, quantity)
cart = cart_utils.get_or_create_cart(request)
cart_item = cart.add(product, properties_dict, quantity)
cart_items = [cart_item]
# Check stock amount
message = ""
if product.manage_stock_amount and cart_item.amount > product.stock_amount and not product.order_time:
if product.stock_amount == 0:
message = _(u"Sorry, but '%(product)s' is not available anymore." % {"product": product.name})
elif product.stock_amount == 1:
message = _(u"Sorry, but '%(product)s' is only one time available." % {"product": product.name})
else:
message = _(u"Sorry, but '%(product)s' is only %(amount)s times available.") % {"product": product.name, "amount": product.stock_amount}
cart_item.amount = product.stock_amount
cart_item.save()
# Add selected accessories to cart
for key, value in request.POST.items():
if key.startswith("accessory"):
accessory_id = key.split("-")[1]
try:
accessory = Product.objects.get(pk=accessory_id)
except ObjectDoesNotExist:
continue
# Get quantity
quantity = request.POST.get("quantity-%s" % accessory_id, 0)
try:
quantity = float(quantity)
except TypeError:
quantity = 1
cart_item = cart.add(product=accessory, amount=quantity)
cart_items.append(cart_item)
# Store cart items for retrieval within added_to_cart.
request.session["cart_items"] = cart_items
cart_changed.send(cart, request=request)
# Update the customer's shipping method (if appropriate)
customer = customer_utils.get_or_create_customer(request)
shipping_utils.update_to_valid_shipping_method(request, customer, save=True)
# Update the customer's payment method (if appropriate)
payment_utils.update_to_valid_payment_method(request, customer, save=True)
# Save the cart to update modification date
cart.save()
try:
url_name = settings.LFS_AFTER_ADD_TO_CART
except AttributeError:
url_name = "lfs.cart.views.added_to_cart"
if message:
return lfs.core.utils.set_message_cookie(reverse(url_name), message)
else:
return HttpResponseRedirect(reverse(url_name))
def delete_cart_item(request, cart_item_id):
"""
Deletes the cart item with the given id.
"""
lfs_get_object_or_404(CartItem, pk=cart_item_id).delete()
cart = cart_utils.get_cart(request)
cart_changed.send(cart, request=request)
return HttpResponse(cart_inline(request))
def refresh_cart(request):
"""
Refreshes the cart after some changes has been taken place, e.g.: the
amount of a product or shipping/payment method.
"""
cart = cart_utils.get_cart(request)
customer = customer_utils.get_or_create_customer(request)
# Update country
country_iso = request.POST.get("country")
if country_iso:
selected_country = Country.objects.get(code=country_iso.lower())
customer.selected_country_id = selected_country.id
if customer.selected_shipping_address:
customer.selected_shipping_address.country = selected_country
customer.selected_shipping_address.save()
customer.selected_shipping_address.save()
if customer.selected_invoice_address:
customer.selected_invoice_address.country = selected_country
customer.selected_invoice_address.save()
customer.selected_invoice_address.save()
# NOTE: The customer has to be saved already here in order to calculate
# a possible new valid shippig method below, which coulb be triggered by
# the changing of the shipping country.
customer.save()
# Update Amounts
message = ""
for item in cart.get_items():
try:
amount = float(request.POST.get("amount-cart-item_%s" % item.id, 0))
except (TypeError, ValueError):
amount = 1.0
if item.product.manage_stock_amount and amount > item.product.stock_amount and not item.product.order_time:
amount = item.product.stock_amount
if amount < 0:
amount = 0
if amount == 0:
message = _(u"Sorry, but '%(product)s' is not available anymore." % {"product": item.product.name})
elif amount == 1:
message = _(u"Sorry, but '%(product)s' is only one time available." % {"product": item.product.name})
else:
message = _(u"Sorry, but '%(product)s' is only %(amount)s times available.") % {"product": item.product.name, "amount": amount}
if item.product.active_packing_unit:
item.amount = lfs.catalog.utils.calculate_real_amount(item.product, float(amount))
else:
item.amount = amount
if amount == 0:
item.delete()
else:
item.save()
# IMPORTANT: We have to send the signal already here, because the valid
# shipping methods might be dependent on the price.
cart_changed.send(cart, request=request)
# Update shipping method
customer.selected_shipping_method_id = request.POST.get("shipping_method")
valid_shipping_methods = shipping_utils.get_valid_shipping_methods(request)
if customer.selected_shipping_method not in valid_shipping_methods:
customer.selected_shipping_method = shipping_utils.get_default_shipping_method(request)
# Update payment method
customer.selected_payment_method_id = request.POST.get("payment_method")
# Last but not least we save the customer ...
customer.save()
result = simplejson.dumps({
"html": cart_inline(request),
"message": message,
}, cls=LazyEncoder)
return HttpResponse(result)
def check_voucher(request):
"""
Updates the cart after the voucher number has been changed.
"""
voucher_number = lfs.voucher.utils.get_current_voucher_number(request)
lfs.voucher.utils.set_current_voucher_number(request, voucher_number)
result = simplejson.dumps({
"html": (("#cart-inline", cart_inline(request)),)
})
return HttpResponse(result)