add form to product detail page

shop/forms.py

@@ -7,6 +7,5 @@ class CheckoutForm(forms.Form):
     pass
 
 class AddToOrderForm(forms.Form):
-    # no fields, just a submit button
-    pass
+    quantity = forms.IntegerField()
 

shop/templates/product_detail.html

@@ -1,7 +1,12 @@
 {% extends 'base.html' %}
+{% load bootstrap3 %}
 
 {% block content %}
 
-<b>details for product {{ product.id }}</b>
+<h2>{{ product.name }}</h2>
 
+<form method="POST">
+    {% csrf_token %}
+    {% bootstrap_button "Add to order" button_type="submit" button_class="btn-primary" %}
+</form>
 {% endblock %}