我有一个用 Notepad++ 开发的 Django 程序，但现在我已经为 Eclipse 安装了 Pydev，所以，我想在 Eclipse 中开发这个程序。
我在购物车文件夹下有 cart.py 和 views.py 模块，但是当我在 views.py 文件中导入购物车模块时，我收到一个错误--Unresolved import:cart --- on the views.py 文件导入语句..任何帮助，将不胜感激。
购物车.py
from cart.models import CartItem
from catalog.models import Product
from django.shortcuts import get_object_or_404
from django.http import HttpResponseRedirect
import decimal
import random
CART_ID_SESSION_KEY = 'cart_id'
#get the current users cart id,set new one if blank
def _cart_id(request):
print 'Get Cart Id'
if request.session.get(CART_ID_SESSION_KEY,'') == '':
print 'Failing here start'
request.session[CART_ID_SESSION_KEY] = _generate_cart_id()
print 'Failing here End'
return request.session[CART_ID_SESSION_KEY]
#
def _generate_cart_id():
print 'Generate cart id'
cart_id = ''
characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890!@#$%^&*()'
cart_id_length = 50
for y in range(cart_id_length):
cart_id += characters[random.randint(0,len(characters)-1)]
return cart_id
#return all items form the current users cart
def get_cart_items(request):
return CartItem.objects.filter(cart_id =_cart_id(request))
#add an item to the cart
def add_to_cart(request):
postdata = request.POST.copy()
#get product slug from post.data, return blank if empty
product_slug = postdata.get('product_slug','')
#get quantity added,return 1 if empty
quantity = postdata.get('quantity',1)
#fetch the product or return a missing page error
p = get_object_or_404(Product, slug=product_slug)
#get producsts in cart
cart_products = get_cart_items(request)
#check to see if the item is already in cart
product_in_cart = False
for cart_item in cart_products:
if cart_item.product.id == p.id:
cart_item.augment_quantity(quantity)
product_in_cart = True
if not product_in_cart:
ci = CartItem()
ci.product = p
ci.quantity = quantity
ci.cart_id = _cart_id(request)
ci.save()
def cart_distinct_item_count(request):
return get_cart_items(request).count()
视图.py
import decimal
from django.shortcuts import render_to_response
from django.template import RequestContext
from ..cart import cart
from django.shortcuts import get_object_or_404
def show_cart(request, template_name="cart/cart.html"):
if request.method == 'POST':
postdata = request.POST.copy()
if postdata['submit'] == 'Remove':
cart.remove_from_cart(request)
if postdata['submit'] == 'Update':
cart.update_cart(request)
cart_items = cart.get_cart_items(request)
page_title = 'Shopping Cart'
cart_subtotal = cart.cart_subtotal(request)
return render_to_response(template_name, locals(),
context_instance=RequestContext(request))
def get_single_item(request, item_id):
return get_object_or_404(CartItem, id=item_id, cart_id=_cart_id(request))
# update quantity for single item
def update_cart(request):
postdata = request.POST.copy()
item_id = postdata['item_id']
quantity = postdata['quantity']
cart_item = get_single_item(request, item_id)
if cart_item:
if int(quantity) > 0:
cart_item.quantity = int(quantity)
cart_item.save()
else:
remove_from_cart(request)
# remove a single item from cart
def remove_from_cart(request):
postdata = request.POST.copy()
item_id = postdata['item_id']
cart_item = get_single_item(request, item_id)
if cart_item:
cart_item.delete()
# gets the total cost for the current cart
def cart_subtotal(request):
cart_total = decimal.Decimal('0.00')
cart_products = get_cart_items(request)
for cart_item in cart_products:
cart_total += cart_item.product.price * cart_item.quantity
return cart_total