@transaction.commit_manually
def checkout_start(request):
    '''
    Creating an order
    '''
    from account.models import Customer
    from django.contrib.auth import authenticate
    from django.contrib.auth import login as django_login

    cart = Cart.objects.from_request(request)

    if cart is None:
        redirect('shop.views.frontdoor')

    if request.method == 'POST':
        form = OrderForm(request.POST)
        if form.is_valid():
            try:
                try:
                    customer = Customer.objects.get(user__email=form.cleaned_data['email'])
                except:
                    customer = None

                if customer is not None:
                    # If we have a customer with this email
                    if not cart.customer:
                        cart.customer = customer
                        cart.discount_card = customer.discount_card
                        cart.save()
                else:
                    # Let's create a user
                    customer, user, password = Customer.objects.create_customer(form.cleaned_data)

                    if customer and cart.discount_card:
                        customer.discount_card = cart.discount_card
                        customer.save()

                    cart.customer = customer
                    cart.save()

                    user = authenticate(username=user.username, password=password)
                    django_login(request, user)

                    # Send Welcome email
                    data = {'user': user, 'password': password}
                    subject = u'Добро пожаловать в интернет-магазин Гудмар'
                    to = user.email
                    from_email = 'contact@goodmar.ru'
                    send_email('welcome', data, subject, to, from_email)

                order = Order.objects.create_order(cart, form.cleaned_data)

                # Send emails
                subject = u'Ваш заказ #%d в интернет-магазине Гудмар' % order.number
                to = order.email
                from_email = 'order@goodmar.ru'
                send_email('order_customer', order, subject, to, from_email)

                subject = u'Поступил новый заказ #%d' % order.number
                to = 'order@goodmar.ru'
                from_email = 'no-reply@goodmar.ru'
                send_email('order_shop', order, subject, to, from_email)
            except:
                transaction.rollback()
                raise
            else:
                transaction.commit()
                redirect_to = reverse('shop.views.checkout_complete')
                return json_response(dict(success=True, redirect_to=redirect_to))
        else:
            return json_response(form.errors)

    redirect('shop.views.cart_display')