gistfile1.py

    doc = minidom.Document()
    # cart object world
    cart = doc.createElement('checkout-shopping-cart')
    cart.setAttribute("xmlns","http://checkout.google.com/schema/2")

    item_cart = doc.createElement('shopping-cart')
    cart.appendChild(item_cart)

    # merchant item data
    merch_data = doc.createElement('merchant-private-data')
    item_cart.appendChild(merch_data)

    merch_data_info = doc.createElement('user-id')
    merch_data_info_text = doc.createTextNode('%s' % request.user.id)
    merch_data_info.appendChild(merch_data_info_text)
    merch_data.appendChild(merch_data_info)

    items = doc.createElement('items')
    item_cart.appendChild(items)


    item = doc.createElement('item')
    items.appendChild(item)

    # merchant item id
    merch_id = doc.createElement('merchant-item-id')
    merch_id_text = doc.createTextNode('MONTHLY')
    merch_id.appendChild(merch_id_text)
    item.appendChild(merch_id)
    

    # name info
    name = doc.createElement('item-name')
    name_text = doc.createTextNode('WEREWOLF GAME PRO Account')
    name.appendChild(name_text)
    item.appendChild(name)

    # description
    desc = doc.createElement('item-description')
    desc_text = doc.createTextNode('Subscription to werewolf-game.com.')
    desc.appendChild(desc_text)
    item.appendChild(desc)

    # price
    price = doc.createElement('unit-price')
    price.setAttribute('currency', 'USD')
    price_text = doc.createTextNode('2.00')
    price.appendChild(price_text)
    item.appendChild(price)

    # quantity
    quantity = doc.createElement('quantity')
    quantity_text = doc.createTextNode('1')
    quantity.appendChild(quantity_text)
    item.appendChild(quantity)
    
    # subscription info
    sub = doc.createElement('subscription')
    sub.setAttribute('period', 'MONTHLY')
    sub.setAttribute('type', 'google')
    item.appendChild(sub)

    # payments
    payments = doc.createElement('payments')
    sub.appendChild(payments)

    #subscription payment
    sub_payment = doc.createElement('subscription-payment')
    payments.appendChild(sub_payment)

    # max-charge
    max_charge = doc.createElement('maximum-charge')
    max_charge.setAttribute('currency', 'USD')
    max_charge_text = doc.createTextNode('2.00')
    max_charge.appendChild(max_charge_text)
    sub_payment.appendChild(max_charge)

    # recurring item
    re_item = doc.createElement('recurrent-item')
    sub.appendChild(re_item)

    # item name
    re_item_name = doc.createElement('item-name')
    re_item_name_text = doc.createTextNode('Werewolf Game subscription for ONE month')
    re_item_name.appendChild(re_item_name_text)
    re_item.appendChild(re_item_name)

    # item description
    re_item_desc = doc.createElement('item-description')
    re_item_desc_text = doc.createTextNode('Your flat fee for having a pro account on www.werewolf-game.com')
    re_item_desc.appendChild(re_item_desc_text)
    re_item.appendChild(re_item_desc)

    # item quantity
    re_item_quantity = doc.createElement('quantity')
    re_item_quantity_text = doc.createTextNode('1')
    re_item_quantity.appendChild(re_item_quantity_text)
    re_item.appendChild(re_item_quantity)

    # re price
    re_price = doc.createElement('unit-price')
    re_price.setAttribute('currency', 'USD')
    re_price_text = doc.createTextNode('2.00')
    re_price.appendChild(re_price_text)
    re_item.appendChild(re_price)

    # digital content
    re_digital_content = doc.createElement('digital-content')
    re_item.appendChild(re_digital_content)

    # display disposition
    re_display_disp = doc.createElement('display-disposition')
    re_display_disp_text = doc.createTextNode('OPTIMISTIC')
    re_display_disp.appendChild(re_display_disp_text)
    re_digital_content.appendChild(re_display_disp)

    # url
    re_display_url = doc.createElement('url')
    re_display_url_text = doc.createTextNode('http://www.werewolf-game.com')
    re_display_url.appendChild(re_display_url_text)
    re_digital_content.appendChild(re_display_url)

    # description
    re_display_desc = doc.createElement('description')
    re_display_desc_text = doc.createTextNode('You can now login to your pro account!')
    re_display_desc.appendChild(re_display_desc_text)
    re_digital_content.appendChild(re_display_desc)



    # append the cart
    doc.appendChild(cart)
    data = doc.toxml(encoding="utf-8")
    #return HttpResponse(data)
     

    res = GoogleResponse()
    # send to google
    ch = pycurl.Curl()
    ch.setopt(pycurl.URL, MERCHANT_URL)
    ch.setopt(pycurl.POST, 1)
    ch.setopt(pycurl.POSTFIELDS, data)
    ch.setopt(pycurl.WRITEFUNCTION, res.body_callback)
    ch.perform()
    ch.close()