def add_cart(request):
try:
with transaction.atomic():
book_id = request.POST.get('book_id')
number = request.POST.get('num', '1')
cart = request.session.get('cart')
if str(number).isdigit() and int(number) in range(1, 201):
if request.session.get('login_status'):
username = request.session.get('username')
if '@' in username:
user_id = TUser.objects.filter(username=username)[0].id
else:
user_id = TUser.objects.filter(phone_number=username)[0].id
user_book = TShoppingCart.objects.filter(book_id=int(book_id), user_id=user_id)
if user_book:
user_book[0].quantity += int(number)
user_book[0].save()
else:
TShoppingCart.objects.create(quantity=int(number), book_id=int(book_id), user_id=user_id)
else:
if cart:
cart.add_book(int(book_id), int(number))
request.session['cart'] = cart
else:
cart = Cart()
cart.add_book(int(book_id), int(number))
request.session['cart'] = cart
return JsonResponse({'msg': '添加成功，快去购物车看看吧^_^！', 'status': 1})
return JsonResponse({'msg': '添加失败，添加的数量要在1-200之间', 'status': 0})
except Exception as error:
print(error)
return HttpResponse('哎呀！服务器出错了~')
def put_off(request):
# 先将订单中要放回购物车的书放到session中
id = request.GET.get('id')
count = request.GET.get('count')
local_cart = request.session.get('cart')
if local_cart:
pass
else:
local_cart = L_cart() # 创建新的本地购物车
with transaction.atomic():
local_cart.add_book(id=id, count=count)
request.session['cart'] = local_cart
return HttpResponse('已将所选书籍放回到购物车中')
def add_book(request):
# 判断登陆状态
cookie_uid = request.COOKIES.get('uid')
user = ''
if cookie_uid:
user = User.objects.get(id=cookie_uid)
else:
session_user = request.session.get('user')
if session_user:
user = session_user
id = int(request.GET.get('id')) # 获取书的id
count = int(request.GET.get('count')) # 获取添加书的数量
try:
if user:
book = U_cart.objects.filter(cart_uid=user.id,
cart_bid=id) # 获取购物车中所存放的书
if book: # 如果该书存在
with transaction.atomic():
book[0].number += count # 书的数量变化
book[0].save()
else: # 不存在
book = Book.objects.get(id=id) # 获取到书的对象
with transaction.atomic():
U_cart.objects.create(number=count,
cart_uid=user,
cart_bid=book) # 向购物车中添加书
else:
local_cart = request.session.get('cart')
if local_cart:
pass
else:
local_cart = Cart() # 创建新的本地购物车
with transaction.atomic():
local_cart.add_book(id=id, count=count)
request.session['cart'] = local_cart
return HttpResponse('已添加' + str(count) + '本书籍')
except Exception as e:
print(e)
return HttpResponse('出错了')
