Allow deactivated to be null

core/migrations/0004_auto_20170602_0146.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.1 on 2017-06-02 01:46
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0003_auto_20170602_0130'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='api_owners',
+            name='date_deactivated',
+            field=models.DateField(blank=True),
+        ),
+    ]

core/models.py

@@ -12,7 +12,7 @@ class api_owners(models.Model):
 	# Users who are allowed to have an API app
 	user = models.OneToOneField(User, unique=True, blank=False)
 	date_added = models.DateField(blank=False)
-	date_deactivated = models.DateField()
+	date_deactivated = models.DateField(blank=True)
 	active = models.BooleanField(blank=False)
 
 	def __str__(self):