Django and ajax - Python

{% for product in products %}
                   <div class="col-sm-4">
                       <div class="product">
                           <div class="product-img">
                               <a href="#"><img src="/media/{{ product.img }}" alt=""></a>
                           </div>
                           <p class="product-title">
                               <a href="#">{{ product.name }}</a>
                           </p>
                           <p class="product-desc">{{ product.description }}</p>
                           <p class="product-price">{{ product.price }} Р</p>
                           <form method="post" action="{% url "cart:addj" %}" class="form-inline product-form" id="submit_btn" data-productid="{{ product.id }}">
                               {% csrf_token %}
                               <div class="form-group">
                               {{ cart_product_form.quantity }}
                               {{ cart_product_form.update }}
                               <input class="btn btn-danger form-control" type="submit" value="В корзину" >
                               </div>
                           </form>
                       </div>
                   </div>
                   {% endfor %}

$("#submit_btn").submit( function (e) {
                e.preventDefault();
                var pr_id = $(this).attr("data-productid");
                var url = $(this).attr("action")
                console.log(pr_id);
                console.log($(this).serialize());
                $.ajax({
                    type: 'POST',
                    url: url,
                    data: {
                        product_id: pr_id,
                        csrfmiddlewaretoken: $('input[name=csrfmiddlewaretoken]'),
                    },
 
                    dataType: 'json',
 
                    sucess: function () {
                        alert("aye");
 
                    }
                });
 
        });

def AnotherAdd(request):
    if request.method == 'POST':
            product_id = request.POST['product_id']
            cart = Cart(request)
            product = Product.objects.get( id = product_id)
 
            form = CartAddProductForm(request.POST)
            if form.is_valid():
                cd = form.cleaned_data
                cart.add(product=product, quantity=cd['quantity'],
                         update_quantity=cd['update'])
 
            return HttpResponse('ok', content_type='text/html')
    else:
        return HttpResponse('neok', content_type='text/html')

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