old_contents: from datetime import datetime
  
  from django.db import models
  from pybaulicht import BaulichtDbus
  
  
  bus = BaulichtDbus()
  
  class Message(models.Model):
      created = models.DateTimeField(auto_now_add=True)
      created_ip = models.GenericIPAddressField(null=True)
  
      name = models.CharField(blank=True, max_length=32, default="")
      email = models.EmailField(blank=True, max_length=128, default="")
      text = models.TextField(max_length=512)
  
      dbus_path = models.CharField(blank=True, default="", max_length=32)
      accepted = models.NullBooleanField(null=True, default=None)
      is_active = models.NullBooleanField(null=True, default=None)
      activated_at = models.DateTimeField(null=True)
  
      def send_to_dbus(self):
          self.dbus_path = bus.add_text(self.text)
          self.activated_at = datetime.now()
          self.accepted = True
          self.is_active = True
  
      def remove_from_dbus(self):
          bus.remove_text(self.dbus_path)
          self.is_active = False
  
new_contents: from datetime import datetime
  
  from django.db import models
  from pybaulicht import BaulichtDbus
  
  
  bus = BaulichtDbus()
  
  class Message(models.Model):
      created = models.DateTimeField(auto_now_add=True)
      created_ip = models.GenericIPAddressField(null=True)
  
      name = models.CharField(blank=True, max_length=32, default="")
      email = models.EmailField(blank=True, max_length=128, default="")
      text = models.TextField(max_length=512)
  
      dbus_path = models.CharField(blank=True, default="", max_length=32)
      accepted = models.NullBooleanField(null=True, default=None)
      is_active = models.NullBooleanField(null=True, default=None)
      activated_at = models.DateTimeField(null=True)
  
      def send_to_dbus(self):
          if not self.dbus_path:
              self.dbus_path = bus.add_text(self.text)
              self.activated_at = datetime.now()
              self.accepted = True
              self.is_active = True
              self.save()
  
      def remove_from_dbus(self):
          if self.dbus_path:
              bus.remove_text(self.dbus_path)
              self.is_active = False
              self.save()
  
subject: Update models.py