core: add uuid to user, use as sub for OpenID

passbook/api/v1/openid.py

@@ -12,7 +12,7 @@ class OpenIDUserInfoView(ScopedResourceMixin, View):
     def get(self, request, *args, **kwargs):
         """Passbook v1 OpenID API"""
         payload = {
-            'sub': request.user.pk,
+            'sub': request.user.uuid.int,
             'name': request.user.get_full_name(),
             'given_name': request.user.first_name,
             'family_name': request.user.last_name,

passbook/core/migrations/0006_user_uuid.py

@@ -0,0 +1,20 @@
+# Generated by Django 2.1.4 on 2018-12-09 17:58
+
+import uuid
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('passbook_core', '0005_auto_20181127_1522'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='uuid',
+            field=models.UUIDField(default=uuid.uuid4, editable=False),
+        ),
+    ]

passbook/core/models.py

@@ -1,6 +1,7 @@
 """passbook core models"""
 import re
 from logging import getLogger
+from uuid import uuid4
 
 import reversion
 from django.contrib.auth.models import AbstractUser
@@ -16,6 +17,7 @@ LOGGER = getLogger(__name__)
 class User(AbstractUser):
     """Custom User model to allow easier adding o f user-based settings"""
 
+    uuid = models.UUIDField(default=uuid4, editable=False)
     sources = models.ManyToManyField('Source', through='UserSourceConnection')
     applications = models.ManyToManyField('Application')