Reverse for 'AddCart' not found. 'AddCart' is not a valid view function or pattern name

Question

I am Working on my project and I don't know how this error I got

Can anybody see what I'm missing?

This is my root project urls.py

from django.contrib import admin
from django.urls import path, include
from .import views
from django.conf import settings
from django.conf.urls.static import static

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', views.index),
    path('onlinePizza/', include('onlinePizza.urls')),
    path('cart/', include(('cart.urls'), namespace='cart')),
    path('accounts/', include(('accounts.urls'), namespace='accounts')),
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

This is my cart app urls.py

from django.urls import path
from .import views
from cart.views import AddCart

app_name = 'cart'

urlpatterns = [
    path('add_cart/', views.AddCart, name='Cart'),
]

This is my cart app views.py

from django.shortcuts import render, redirect
from cart.models import *

def AddCart(request):
    product = request.POST.get('product')
    remove = request.POST.get('remove')
    cart = request.session.get('cart')
    
    if not cart:
        request.session['cart'] = {}

    if cart:
        quantity=cart.get(product)
        if quantity:
            if remove:
                if quantity<=1:
                    cart.pop(product)
                else:
                    cart[product]=quantity-1
            else:   
                cart[product]=quantity+1
        else:
            cart[product]=1         
    else:
        cart={}
        cart[product]=1

    request.session['cart']=cart
    
    return redirect ('Menu')

This is my onlinePizza/pc_menu.html template

<form action="{% url 'cart:AddCart' %}" method="POST">{% csrf_token %}
     <input hidden type="text" name="product" value="{{i.id}}">
     <button class="main-btn cart cart-btn" style="padding: 5px 32px">Add <i class="fa-solid fa-cart-shopping"></i></button>
</form>

I try to solve this problem, but I show this error everywhere in my project.

Hi, and welcome to StackOverflow! From what I can see, in the file `urls.py`, the `AddCart` view is registered under the name `Cart`. Try changing that name to `AddCart`. _(I'm not very familiar with Django, so I might be wrong)_ — David, Aug 13 '22 at 08:30

score 0 · Accepted Answer · answered Aug 13 '22 at 09:05

You need that name:

urlpatterns = [
    path('add_cart/', views.AddCart, name='Cart'),
]

and that link generator:

{% url 'cart:AddCart' %}

refering to the exactly same value. So it has to be either 'Cart' and 'cart:Cart' or 'AddCart' and 'cart:AddCart'.

Reverse for 'AddCart' not found. 'AddCart' is not a valid view function or pattern name

1 Answers1