three states for 'pd in family' field - #107

smash/web/migrations/0038_subject_pd_family_allow_null.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.3 on 2017-04-26 06:58
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('web', '0037_appointment_types_descriptions_changes'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='contactattempt',
+            name='datetime_when',
+            field=models.DateTimeField(help_text=b'When did the contact occurred?', verbose_name=b'When'),
+        ),
+        migrations.AlterField(
+            model_name='subject',
+            name='pd_in_family',
+            field=models.NullBooleanField(default=False, verbose_name=b'PD in family'),
+        ),
+    ]

smash/web/models/subject.py

@@ -147,7 +147,7 @@ class Subject(models.Model):
         verbose_name='Information sent',
         default=False
     )
-    pd_in_family = models.BooleanField(
+    pd_in_family = models.NullBooleanField(
         verbose_name='PD in family',
         default=False,
     )