code: def init_post(self, request):
          
          self.request = request
          self.service = request.POST.get('service')
          self.renew = bool(request.POST.get('renew') and request.POST['renew'] != "False")
          self.gateway = request.POST.get('gateway')
          self.method = request.POST.get('method')
          self.ajax = settings.CAS_ENABLE_AJAX_AUTH and 'HTTP_X_AJAX' in request.META
          if request.POST.get('warned') and request.POST['warned'] != "False":
              self.warned = True
          self.warn = request.POST.get('warn')
          if settings.CAS_FEDERATE:
              self.username = request.POST.get('username')
              # in federated mode, the valdated indentity provider CAS ticket is used as password
              self.ticket = request.POST.get('password')
docs: Initialize POST received parameters
  
              :param django.http.HttpRequest request: The current request object