remove property "public", add AccessRestriction model

src/c3nav/mapdata/models/access.py

@@ -0,0 +1,28 @@
+from django.db import models
+from django.utils.translation import ugettext_lazy as _
+
+from c3nav.mapdata.models.base import SerializableMixin, TitledMixin
+
+
+class AccessRestriction(TitledMixin, models.Model):
+    """
+    An access restriction, currently without finetuning
+    """
+
+    class Meta:
+        verbose_name = _('Access Restriction')
+        verbose_name_plural = _('Access Restrictions')
+        default_related_name = 'accessrestrictions'
+
+
+class AccessRestrictionMixin(SerializableMixin, models.Model):
+    access_restriction = models.ForeignKey(AccessRestriction, null=True, blank=True,
+                                           verbose_name=_('Access Restriction'))
+
+    class Meta:
+        abstract = True
+
+    def _serialize(self, **kwargs):
+        result = super()._serialize(**kwargs)
+        result['access_restriction'] = self.access_restriction_id
+        return result