old_contents: from django.contrib.auth.models import User
  from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from tickets import settings
  
  
  class Ticket(models.Model):
      creator = models.ForeignKey(User, verbose_name=_("Creator"), related_name='tickets')
      date = models.DateTimeField(_("Date"), auto_now_add=True)
      last_update = models.DateTimeField(_("Date"), auto_now=True)
      subject = models.CharField(_("Subject"), max_length=255)
      description = models.TextField(_("Description"), help_text=_("A detailed description of your problem."))
      assignee = models.ForeignKey(User, verbose_name=_("Assignee"), related_name="assigned_tickets", blank=True, null=True)
      status = models.SmallIntegerField(_("Status"), choices=settings.STATUS_CHOICES, default=0)
  
      class meta:
          verbose_name = _("Ticket")
          verbose_name_plural = _("Tickets")
          ordering = ['date']
  
      def get_comments_count(self):
          return self.comments.count()
  
      def get_latest_comment(self):
          return self.comments.latest('date')
  
      def __unicode__(self):
          return "%s# %s" % (self.id, self.subject)
  
      def is_closed(self):
          return self.status in settings.CLOSED_STATUSES
  
  
  class TicketComment(models.Model):
      ticket = models.ForeignKey(Ticket, verbose_name=_("Ticket"), related_name='comments')
      date = models.DateTimeField(auto_now_add=True, verbose_name=_("Date"), editable=False)
      author = models.ForeignKey(User, verbose_name=_("Author"))
      comment = models.TextField(_("Comment"))
  
      class Meta:
          verbose_name = _("Ticket comment")
          verbose_name_plural = _("Ticket comments")
          ordering = ['date']
  
      def __unicode__(self):
          return "Comment on " + unicode(self.ticket)
  
new_contents: from django.contrib.auth.models import User
  from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from tickets import settings
  
  
  class Ticket(models.Model):
      creator = models.ForeignKey(User, verbose_name=_("Creator"), related_name='tickets')
      date = models.DateTimeField(_("Date"), auto_now_add=True)
      last_update = models.DateTimeField(_("Date"), auto_now=True)
      subject = models.CharField(_("Subject"), max_length=255)
      description = models.TextField(_("Description"), help_text=_("A detailed description of your problem."))
      assignee = models.ForeignKey(User, verbose_name=_("Assignee"), related_name="assigned_tickets", blank=True, null=True)
      status = models.SmallIntegerField(_("Status"), choices=settings.STATUS_CHOICES, default=0)
  
      class meta:
          verbose_name = _("Ticket")
          verbose_name_plural = _("Tickets")
          ordering = ['date']
  
      def get_comments_count(self):
          return self.comments.count()
  
      def get_latest_comment(self):
          return self.comments.latest('date')
  
      def __unicode__(self):
          return "%s# %s" % (self.id, self.subject)
  
      def is_closed(self):
          return self.status in settings.CLOSED_STATUSES
  
      def is_answered(self):
          try:
              latest = self.get_latest_comment()
          except TicketComment.DoesNotExist:
              return False
          return latest.author != self.creator
      is_answered.boolean = True
      is_answered.short_description = _("Is answered")
  
  
  class TicketComment(models.Model):
      ticket = models.ForeignKey(Ticket, verbose_name=_("Ticket"), related_name='comments')
      date = models.DateTimeField(auto_now_add=True, verbose_name=_("Date"), editable=False)
      author = models.ForeignKey(User, verbose_name=_("Author"))
      comment = models.TextField(_("Comment"))
  
      class Meta:
          verbose_name = _("Ticket comment")
          verbose_name_plural = _("Ticket comments")
          ordering = ['date']
  
      def __unicode__(self):
          return "Comment on " + unicode(self.ticket)
  
subject: add is_answered method