UPD: more cool participant admin stuff.

dav_events/models/participant.py

@@ -6,6 +6,8 @@ from django.utils import timezone
 from django.utils.encoding import python_2_unicode_compatible
 from django.utils.translation import ugettext_lazy as _
 
+from dav_base.validators import DAVNumberValidator
+
 midnight = datetime.time(00, 00, 00)
 one_day = datetime.timedelta(1)
 
@@ -32,7 +34,7 @@ class Participant(models.Model):
     phone_number = models.CharField(max_length=254,
                                     verbose_name=_('Telefonnummer'))
     dav_number = models.CharField(max_length=62,
-                                  #validators=[DAVNumberValidator],
+                                  validators=[DAVNumberValidator],
                                   verbose_name=_('DAV Mitgliednummer'))
     emergency_contact = models.TextField(blank=True,
                                          verbose_name=_('Notfall-Kontakt'))