The cart_add and cart_remove views don't render any templates, but we need to create a template for the cart_detail view to display cart items and totals.

Create the following file structure inside the cart application directory:

templates/
    cart/
        detail.html

Edit the cart/detail.html template and add the following code to it:

{% extends "shop/base.html" %}
{% load static %}

{% block title %}
  Your shopping cart
{% endblock %}

{% block content %}
  <h1>Your shopping cart</h1>
  <table class="cart">
    <thead>
      <tr>
        <th>Image</th>
        <th>Product</th>
        <th>Quantity</th>
        <th>Remove</th>
        <th>Unit price</th>
        <th>Price</th>
      </tr>
    </thead>
    <tbody>
      {% for item in cart %}
        {% with product=item.product %}
          <tr>
            <td>
              <a href="{{ product.get_absolute_url }}">
                <img src="{% if product.image %}{{ product.image.url }}
                {% else %}{% static "img/no_image.png" %}{% endif %}">
              </a>
            </td>
            <td>{{ product.name }}</td>
            <td>{{ item.quantity }}</td>
            <td><a href="{% url "cart:cart_remove" product.id 
            %}">Remove</a></td>
            <td class="num">${{ item.price }}</td>
            <td class="num">${{ item.total_price }}</td>
          </tr>
        {% endwith %}
      {% endfor %}
      <tr class="total">
        <td>Total</td>
        <td colspan="4"></td>
        <td class="num">${{ cart.get_total_price }}</td>
      </tr>
    </tbody>
  </table>
  <p class="text-right">
    <a href="{% url "shop:product_list" %}" class="button 
    light">Continue shopping</a>
    <a href="#" class="button">Checkout</a>
  </p>
{% endblock %}

This is the template that is used to display the cart content. It contains a table with the items stored in the current cart. We allow users to change the quantity of the selected products using a form that is posted to the cart_add view. We also allow users to remove items from the cart by providing a Remove link for each of them.