'Calculate the POST params we want to send back to the client.'

@classmethod
def response_post_params(cls, user):

    access_key = settings.VERIFY_STUDENT['SOFTWARE_SECURE']['API_ACCESS_KEY']
    context = {'receipt_id': None, 'authorization_code': 'SIS    {}:0000'.format(access_key), 'results_callback': reverse('verify_student_results_callback')}
    try:
        most_recent = SoftwareSecurePhotoVerification.objects.filter(user=user).order_by('-updated_at')[0]
        context['receipt_id'] = most_recent.receipt_id
    except:
        pass
    return context
