Реализовываю корзину с помощью sessions. когда нажимаю на кнопку "add to cart" появляется это
Page not found (404)
No ProductVariant matches the given query.
#logs
Not Found: /cart/add/1/
mycart.views
def cart_details(request):
cart = Cart(request)
return render(request, 'mycart/cart_details.html', {'cart':cart})
@require_http_methods(["GET", "POST"])
def add_cart(request, variant_id):
cart = Cart(request)
product = get_object_or_404(ProductVariant, id=variant_id)
form = AddProductInCart(request.POST)
if form.is_valid():
cd = form.cleaned_data
cart.add(product=product, quantity=cd['quantity'],update=cd['update'])
return redirect('mycart:cart_detail')
mycart.cart
from decimal import Decimal
from shop.models import ProductVariant
from test_shop import settings
class Cart:
def __init__(self, request):
self.session = request.session
cart = self.session.get(settings.CART_SESSION_ID)
if not cart:
cart = self.session[settings.CART_SESSION_ID] = {}
self.cart = cart
def __iter__(self):
variant_ids = self.cart.keys()
products = ProductVariant.objects.filter(id__in=variant_ids)
cart = self.cart.copy()
for product in products:
cart[str( product.id)]['variant'] = product
def add(self, product, quantity, update=False):
product_id = str(product.id)
if product_id not in self.cart:
self.cart[product_id] = {'quantity': 0,
'price': str(product.price)}
if update:
self.cart[product_id]['quantity'] = quantity
else:
self.cart[product_id]['quantity'] += quantity
self.save()
def save(self):
self.session.modified = True
def remove(self, product):
product_id = str(product.id)
if product_id in self.cart:
del self.cart[product_id]
self.save()
def __len__(self):
"""len products in cart"""
return sum(item['quantity'] for item in self.cart.values())
def get_total_price(self):
"""total_price"""
return sum(Decimal(item['quantity']) * item['price']for item in self.cart.values())
def clear(self):
del self.session[settings.CART_SESSION_ID]
self.save()
mycart.forms.py
class AddProductInCart(forms.Form):
quantity = forms.TypedChoiceField(choices=PRODUCT_QUANTITY_CHOICES, coerce=int)
# size = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple,
# choices=PRODUCT_QUANTITY_CHOICES)
update = forms.BooleanField(required=False, initial=False, widget=forms.HiddenInput)
mycart.urls
app_name ='mycart'
urlpatterns = [
path('', cart_details,name ='cart_detail'),
path('add/<int:variant_id>/', add_cart,name='add_cart')
]
test_shop.urls
urlpatterns = [
path('admin/', admin.site.urls),
path('cart/',include('mycart.urls', namespace='mycart')),
path('', include('shop.urls')),
]
product_details.py
<form id='CartAddForm' action="{% url 'mycart:add_cart' product.id %}" method="post">
{{ form }}
{% csrf_token %}
<input type="submit" value="Add to cart">
</form>
