Add public_user_uuid field to User model

physionet-django/user/migrations/0064_user_public_user_uuid.py

@@ -0,0 +1,21 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("user", "0063_alter_training_status"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="user",
+            name="public_user_uuid",
+            field=models.UUIDField(
+                null=True,
+                editable=False,
+                db_index=True,
+                help_text="Persistent, public identifier for user accounts.",
+            ),
+        ),
+    ]

physionet-django/user/migrations/0065_backfill_public_user_uuid.py

@@ -0,0 +1,22 @@
+# 0065_backfill_public_user_uuid.py
+
+from django.db import migrations
+import uuid
+
+
+def backfill_uuids(apps, schema_editor):
+    User = apps.get_model("user", "User")
+    for user in User.objects.filter(public_user_uuid__isnull=True):
+        user.public_user_uuid = uuid.uuid4()
+        user.save(update_fields=["public_user_uuid"])
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("user", "0064_user_public_user_uuid"),
+    ]
+
+    operations = [
+        migrations.RunPython(backfill_uuids, reverse_code=migrations.RunPython.noop),
+    ]

physionet-django/user/migrations/0066_enforce_public_user_uuid_constraint.py

@@ -0,0 +1,28 @@
+# 0066_enforce_public_user_uuid_constraints.py
+
+from django.db import migrations, models
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    MIGRATE_AFTER_INSTALL = True
+
+    dependencies = [
+        ("user", "0065_backfill_public_user_uuid"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="user",
+            name="public_user_uuid",
+            field=models.UUIDField(
+                unique=True,
+                default=uuid.uuid4,
+                null=False,
+                editable=False,
+                db_index=True,
+                help_text="Persistent, public identifier for user accounts.",
+            ),
+        ),
+    ]

physionet-django/user/models.py

@@ -1,6 +1,7 @@
 import logging
 import os
 from datetime import timedelta
+import uuid
 
 from django.utils.crypto import get_random_string
 from django.conf import settings
@@ -351,6 +352,14 @@ class User(AbstractBaseUser, PermissionsMixin):
     join_date = models.DateField(auto_now_add=True)
     last_login = models.DateTimeField(null=True, blank=True)
 
+    public_user_uuid = models.UUIDField(
+        default=uuid.uuid4,
+        unique=True,
+        editable=False,
+        db_index=True,
+        help_text="Persistent, public identifier for user accounts.",
+    )
+
     # IP address used when account was registered
     registration_ip = models.CharField(max_length=40, db_index=True,
                                        blank=True, null=True)