Fix #9 Registrations: Add support for non members

dav_events/models/participant.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 import datetime
+from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils import timezone
 from django.utils.encoding import python_2_unicode_compatible
@@ -32,8 +33,11 @@ class Participant(models.Model):
     email_address = models.EmailField(verbose_name=_('E-Mail-Adresse'))
     phone_number = models.CharField(max_length=254,
                                     verbose_name=_('Telefonnummer'))
+    dav_member = models.BooleanField(default=True,
+                                     verbose_name=_('DAV Mitglied'),
+                                     help_text=_('In Ausnahmefällen nehmen wir auch Nichtmitglieder mit.'))
     dav_number = models.CharField(max_length=62,
-                                  validators=[DAVNumberValidator],
+                                  blank=True, validators=[DAVNumberValidator],
                                   verbose_name=_('DAV Mitgliedsnummer'))
     emergency_contact = models.TextField(blank=True,
                                          verbose_name=_('Notfall-Kontakt'),
@@ -69,25 +73,38 @@ class Participant(models.Model):
             text = """{fullname}
     {address}, {postal_code} {city}
 
+    DAV Mitglied: {dav_info}
+
     Notfallkontakt:
     {emergency_contact}
 
     Anmerkung:
     {note}
     """
+            if not self.dav_member:
+                dav_info = _('Nein')
+            else:
+                dav_info = self.dav_number
+
             return text.format(
                 fullname=self.get_full_name(),
                 address=self.address,
                 postal_code=self.postal_code,
                 city=self.city,
+                dav_info=dav_info,
                 emergency_contact=self.emergency_contact,
                 note=self.note,
             )
 
+    def clean(self):
+        if self.dav_member and not self.dav_number:
+            raise ValidationError({'dav_number': _('Bei DAV Mitgliedern brauchen wir die Mitgliedsnummer.')})
+
     def save(self, **kwargs):
         if not self.purge_at and self.event:
             self.purge_at = self.__class__.calc_purge_at(self.event)
 
+        self.full_clean()
         super(Participant, self).save(**kwargs)
 
     @staticmethod