def add_car(request):
book_id = request.POST.get('book_id')
book_count = int(request.POST.get('book_count'))
print('add_car', book_count)
print('add_car', book_id)
# 字典方式存储book
# book_list= []
# book_list.append({"id":book_id})
# request.session['car'] = book_list
car = request.session.get('car')
txtUsername = request.session.get('txtUsername')
if txtUsername:
user = TUser.objects.get(user_name=txtUsername)
user_car = TCar.objects.filter(id=user.user_id)
for user_book in user_car:
if int(book_id) == user_book.book_id:
try:
user_book.goods_number = int(
user_book.goods_number) + book_count
user_book.save()
print(user_book.goods_number)
except:
print('update error')
if car:
car.add(book_id, book_count)
request.session['car'] = car
for res in car.book_list:
print(res.id, res.name, res.count, res.price, res.picture)
else:
car = Car()
car.add(book_id, book_count)
request.session['car'] = car
for res in car.book_list:
print(res.id, res.name, res.count, res.price, res.picture)
return HttpResponse('添加成功')
def car(request):
txtUsername = request.session.get('txtUsername')
# 登录
if txtUsername:
car = request.session.get('car')
user = TUser.objects.get(user_name=txtUsername)
user_car = TCar.objects.filter(id=user.user_id)
# 外面有车
if car:
if request.session.get('car'):
for book in car.book_list:
flag = False
for user_book in user_car:
if int(book.id) == user_book.book_id:
try:
with transaction.atomic():
if int(user_book.goods_number) > int(
book.count):
pass
else:
user_book.goods_number = int(
book.count)
user_book.save()
flag = True
except:
print('update error')
if not flag:
try:
with transaction.atomic():
TCar.objects.create(book_id=book.id,
goods_number=book.count,
id=user)
except:
print('insert1 error')
else:
for book in car.book_list:
try:
with transaction.atomic():
TCar.objects.create(book_id=book.id,
goods_number=book.count,
id=user)
except:
print('insert2 error')
for user_book in user_car:
flag = False
for book in car.book_list:
if int(book.id) == user_book.book_id:
book.count = int(user_book.goods_number)
flag = True
if not flag:
car.add(user_book.book_id, user_book.goods_number)
request.session['car'] = car
sum_price = 0
sum_count = 0
for i in car.book_list:
sum_price = sum_price + float(i.price) * int(i.count)
sum_count = sum_count + int(i.count)
return render(
request, 'dangdang/car.html', {
'txtUsername': txtUsername,
'car': car,
'sum_price': sum_price,
'sum_count': sum_count
})
else:
car = Car()
for user_book in user_car:
print(user_book.book_id, user_book.goods_number)
car.add(user_book.book_id, user_book.goods_number)
print(car)
request.session['car'] = car
sum_price = 0
sum_count = 0
for i in car.book_list:
sum_price = sum_price + float(i.price) * int(i.count)
sum_count = sum_count + int(i.count)
return render(
request, 'dangdang/car.html', {
'car': car,
'sum_price': sum_price,
'sum_count': sum_count,
'txtUsername': txtUsername
})
elif request.session.get('car'):
car = request.session.get('car')
sum_price = 0
sum_count = 0
for i in car.book_list:
sum_price += i.price * i.count
sum_count += i.count
return render(request, 'dangdang/car.html', {
'car': car,
'sum_price': sum_price,
'sum_count': sum_count
})
# 未登录 外面无车
else:
car = request.session.get('car')
return render(request, 'dangdang/car.html', {'car': car})