Добрый вечер. Столкнулся с аналогичной проблемой
Django session(ошибка сериализации). Создал 2 приложения под корзину и под избранное. Если отключаю 1 из них в settings, то другое работает без ошибок. Либо если добавить товар в избранное и корзину - работает, в противном случае получаю ошибку
raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type Goods is not JSON serializable
# Ошибка: корзина пустая, 1 товар в избранном
{'1': {}} # print(self.session.get('favorites'))
{} # print(self.session.get('cart'))
Сохранение и удаление работает. Ошибка возникает при выводе, предполагаю что в __iter__
services.py
from apps.goods.models import Goods
class Favorites(object):
def __init__(self, request):
""" Initialize the favorites """
self.session = request.session
favorites = self.session.get('favorites')
if not favorites:
favorites = self.session['favorites'] = {}
self.favorites = favorites
def save(self):
"""
Mark the session as "modified" to make sure it gets saved
"""
# добавил строку из решения по ссылке но не помогло
# self.session['favorites'] = self.favorites = self.session.get('favorites', [])
self.session.modified = True
def add(self, goods):
"""
Add a goods to the favorite
"""
goods_id = str(goods.id)
if goods_id not in self.favorites:
self.favorites[goods_id] = {}
self.save()
def remove(self, goods):
"""
Remove a goods from the favorite
"""
goods_id = str(goods.id)
if goods_id in self.favorites:
del self.favorites[goods_id]
self.save()
def __iter__(self):
"""
Iterate over the items in the favorites and get the goods
from the database.
"""
goods_ids = self.favorites.keys()
products = Goods.objects.filter(id__in=goods_ids)
favorites = self.favorites.copy()
for product in products:
favorites[str(product.id)]['goods'] = product
for item in favorites.values():
yield item
def __len__(self):
return len(self.favorites)
views.py
from django.shortcuts import render, get_object_or_404, redirect
from django.views.decorators.http import require_POST
from apps.goods.models import Goods
from .services import Favorites
def favorites(request):
favorites = Favorites(request)
return render(request, 'wishlist/favorites.html', {'favorites': favorites})
def add_favorites(request, goods_id):
favorites = Favorites(request)
goods = get_object_or_404(Goods, id=goods_id)
favorites.add(goods = goods)
return redirect('favorites')
def remove_favorites(request, goods_id):
favorites = Favorites(request)
goods = get_object_or_404(Goods, id=goods_id)
favorites.remove(goods)
return redirect('favorites')
В services для корзины аналогично, но с добавлением доп.данных
apps.cart.servicesfrom decimal import Decimal
from apps.goods.models import Goods
class Cart(object):
def __init__(self, request):
""" Initialize the cart. """
self.session = request.session
cart = self.session.get('cart')
if not cart:
# save an empty cart in the session
cart = self.session['cart'] = {}
self.cart = cart
def add(self, goods, size, quantity=1, update_quantity=False):
"""
Add a goods to the cart or update its quantity.
"""
goods_id = str(goods.id) + size
if goods_id not in self.cart:
self.cart[goods_id] = {'id': str(goods.id),
'quantity': 0,
'price': goods.price,
'size': size}
if update_quantity:
self.cart[goods_id]['quantity'] = quantity
else:
self.cart[goods_id]['quantity'] += quantity
self.save()
def save(self):
"""
Mark the session as "modified" to make sure it gets saved
"""
# строка из решения по ссылке не помогло
# self.session['cart'] = self.cart = self.session.get('cart', [])
self.session.modified = True
def remove(self, goods, size):
"""
Remove a goods from the cart
"""
goods_id = str(goods.id) + size
if goods_id in self.cart:
del self.cart[goods_id]
self.save()
def __iter__(self):
"""
Iterate over the items in the cart and get the goods
from the database.
"""
goods_ids = list()
for key in self.cart.values():
goods_ids.append(key['id'])
# get the product objects and add them to the cart
products = Goods.objects.filter(id__in=goods_ids)
cart = self.cart.copy()
for product in products:
for el in self.cart.values():
id = str(product.id)
if el['id'] == id:
cart[ id + el['size'] ]['goods'] = product
self.cart[ id + el['size'] ]['price'] = product.price
for item in cart.values():
item['total_price'] = item['price'] * item['quantity']
yield item
def __len__(self):
"""
Count all items in the cart.
"""
return sum(item['quantity'] for item in self.cart.values())
def get_total_price(self):
return sum(Decimal(item['price']) * item['quantity'] for item in self.cart.values())
def clear(self):
"""
Remove cart from session
"""
del self.session['cart']
self.save()
Никак не могу понять из-за чего конфликт?
