1. An account on sofort.com
2. Django >= 1.8
3. xmltodict >= 0.9.2

There are just two steps needed to install django-sofortueberweisung:

1. Install django-sofortueberweisung to your virtual env:

   pip install django-sofortueberweisung

2. Configure your django installation with the following lines:

   # django-sofortueberweisung
   INSTALLED_APPS += ('django_sofortueberweisung', )
   
   SOFORT = True
   SOFORT_USER = '99999'
   SOFORT_API_KEY = 'a12b34cd567890123e456f7890123456'
   SOFORT_PROJECT_ID = '999999'
   SOFORT_SUCCESS_URL = 'https://www.example.com/'
   SOFORT_SUCCESS_REDIRECT = True
   SOFORT_ABORT_URL = 'https://www.example.com/abort/'
   SOFORT_TIMEOUT_URL = 'https://www.example.com/timeout/'
   SOFORT_NOTIFICATION_URLS = [{
       'url': 'https://www.example.com/sofortueberweisung/notify/',
       'notify_on': 'pending, loss'
   }, {
       'url': 'https://www.example.com/sofortueberweisung/notify/'
   }]
   SOFORT_NOTIFICATION_EMAILS = [{
       'email': '[email protected]',
       'notify_on': 'pending, loss'
   }, {
       'email': '[email protected]'
   }]
   SOFORT_CUSTOMER_PROTECTION = False
   SOFORT_LANGUAGE_CODE = None
   SOFORT_TIMEOUT = None
   SOFORT_VALID_TRANSACTION_STATUS = ['received', 'untraceable', 'pending']

3. Use methods for initialization and updating transaction where you need it:

   Initialization:

   sofort_payment = SofortWrapper(auth={
                       'USER': settings.SOFORT_USER,
                       'API_KEY': settings.SOFORT_API_KEY,
                       'PROJECT_ID': settings.SOFORT_PROJECT_ID
                   })
   sofort_payment.init(amount=10.0)

   Include the notification View in your URLs:

   # urls.py
   from django.conf.urls import include, url
   
   urlpatterns = [
       url('^sofortueberweisung/', include('django_sofortueberweisung.urls')),
   ]

To initiate a refund, you need to pass an instance of SofortWrapper as first parameter, and sender_data as second. sender_data should be a dict containing keys for holder, iban and bic. Those are your own bank details, not the receiver's.

Refunds are sent with test data by default. To use the values passed for sender_data change SOFORT_REFUNDS_TEST inside your settings to False.

sofort_transaction = SofortTransaction.objects.get(transaction_id=<transaction_id>)
sofort_transaction.create_refund(sofort_wrapper, sender_data, <optional params>)

This will create and return an instance of SofortRefund if request has been successful. If errors have occurred, relations to SofortError are being created.

For more options, read the code and Sofort API documentation