+ # update an existing entry
+ record_exists = True
+ modlist = []
+ orig = self.__class__.objects.get(pk=self.saved_pk)
+ for field in self._meta.local_fields:
+ if not field.db_column:
+ continue
+ old_value = getattr(orig, field.name, None)
+ new_value = getattr(self, field.name, None)
+ if old_value != new_value:
+ if new_value:
+ modlist.append((ldap.MOD_REPLACE, field.db_column, new_value))
+ elif old_value:
+ modlist.append((ldap.MOD_DELETE, field.db_column, None))
+
+ if len(modlist):
+ # handle renaming
+ new_dn = self.build_dn()
+ if new_dn != self.dn:
+ logging.debug("Renaming LDAP entry %s to %s" % (self.dn, new_dn))
+ ldapdb.connection.rename_s(self.dn, self.build_rdn())
+ self.dn = new_dn
+
+ logging.debug("Modifying existing LDAP entry %s" % self.dn)
+ ldapdb.connection.modify_s(self.dn, modlist)
+ else:
+ logging.debug("No changes to be saved to LDAP entry %s" % self.dn)
+
+ # done
+ self.saved_pk = self.pk
+ signals.post_save.send(sender=self.__class__, instance=self, created=(not record_exists))
+
+ @classmethod
+ def scoped(base_class, base_dn):
+ """
+ Returns a copy of the current class with a different base_dn.
+ """
+ import new
+ import re
+ suffix = re.sub('[=,]', '_', base_dn)
+ name = "%s_%s" % (base_class.__name__, str(suffix))
+ new_class = new.classobj(name, (base_class,), {'base_dn': base_dn, '__module__': base_class.__module__})
+ return new_class