Add a kind of trashbin for registrations and participants

dav_events/models/trash/trashed_participant.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from django.db import models
+from django.utils.encoding import python_2_unicode_compatible
+from django.utils.translation import ugettext_lazy as _
+
+from ..participant import AbstractParticipant
+
+
+@python_2_unicode_compatible
+class TrashedParticipant(AbstractParticipant):
+    event = models.ForeignKey('Event', related_name='trashed_participants')
+    created_at = models.DateTimeField()
+    trashed_at = models.DateTimeField(auto_now_add=True)
+    position = models.IntegerField(verbose_name='Listennummer')
+
+    class Meta:
+        verbose_name = _('Gelöschter Teilnehmer (Papierkorb)')
+        verbose_name_plural = _('Gelöschte Teilnehmer (Papierkorb)')
+        ordering = ['event', 'trashed_at']
+
+    def __str__(self):
+        return '{eventnumber} - {name}'.format(
+            eventnumber=self.event.get_number(),
+            name=self.get_full_name(),
+        )