email = models.EmailField(_('contact e-mail'), null=True, blank=True)
question = models.TextField(_('question'), db_index=True)
created_at = models.DateTimeField(_('created at'), auto_now_add=True)
+ changed_at = models.DateTimeField(_('changed at'), auto_now=True)
approved = models.BooleanField(_('approved'), default=False)
edited_question = models.TextField(_('edited question'), db_index=True, null=True, blank=True,
help_text=_("Leave empty if question doesn't need editing."))