Django Shopping Cart

Django Shopping Cart is a Django app to store product in cart.

Quick start

1. install:: pip install django-shopping-cart

2. Add "cart" to your INSTALLED_APPS setting like this::

```
INSTALLED_APPS = [
    ...
    'cart',
]
CART_SESSION_ID = 'cart'
```

**Add below line to settings context_processor::** ```'cart.context_processor.cart_total_amount'```

3. You can use the urls in following way::

from django.urls import path
from . import views

urlpatterns = [
    path('cart/add/<int:id>/', views.cart_add, name='cart_add'),
    path('cart/item_clear/<int:id>/', views.item_clear, name='item_clear'),
    path('cart/item_increment/<int:id>/',
         views.item_increment, name='item_increment'),
    path('cart/item_decrement/<int:id>/',
         views.item_decrement, name='item_decrement'),
    path('cart/cart_clear/', views.cart_clear, name='cart_clear'),
    path('cart/cart-detail/',views.cart_detail,name='cart_detail'),
]

4. You should have a Product model & Below field is mandatory ```

name = models.CharField(max_length=255)
image = models.ImageField(upload_to='products/')
price = models.FloatField()
```

5. Then views.py should like like this::

from django.shortcuts import render, redirect
from store.models import Product
from django.contrib.auth.decorators import login_required
from cart.cart import Cart

@login_required(login_url="/users/login")
def cart_add(request, id):
    cart = Cart(request)
    product = Product.objects.get(id=id)
    cart.add(product=product)
    return redirect("home")


@login_required(login_url="/users/login")
def item_clear(request, id):
    cart = Cart(request)
    product = Product.objects.get(id=id)
    cart.remove(product)
    return redirect("cart_detail")


@login_required(login_url="/users/login")
def item_increment(request, id):
    cart = Cart(request)
    product = Product.objects.get(id=id)
    cart.add(product=product)
    return redirect("cart_detail")


@login_required(login_url="/users/login")
def item_decrement(request, id):
    cart = Cart(request)
    product = Product.objects.get(id=id)
    cart.decrement(product=product)
    return redirect("cart_detail")


@login_required(login_url="/users/login")
def cart_clear(request):
    cart = Cart(request)
    cart.clear()
    return redirect("cart_detail")


@login_required(login_url="/users/login")
def cart_detail(request):
    return render(request, 'cart/cart_detail.html')

6. In the template you can use the url in folowing way::

<a href="{% url 'cart_add' product.id %}">Add To Cart</a>
<a href="{% url 'cart_clear' %}">Clear Cart</a>
<a href="{% url 'item_increment' value.product_id %}">Increament</a>
<a href="{% url 'item_decrement' value.product_id %}">Decrement</a>

7. To view the cart detail page use the below code

{% load cart_tag %}

Total Length :: {{request.session.cart|length}}

Cart Detail::
{% for key,value in request.session.cart.items %}
    <img src="{{value.image}}" width="120" height="80"><br>
    {{value.name}}<br>
    {{value.price}} <br>
    {{value.quantity}}  <br>
    Total {{ value.price|multiply:value.quantity }}
{% endfor %}