Merge pull request #45 from edx/varshamenon4/add-anonymous-user-id-wi…

…th-migration

feat: generate anonymous_user_id field in User model

edx_exams/apps/core/migrations/0011_user_anonymous_user_id.py

@@ -0,0 +1,33 @@
+# Generated by Django 3.2.15 on 2022-09-29 20:54
+
+from django.db import migrations, models
+import uuid
+
+
+def create_anonymous_user_ids(apps, schema_editor):
+    User = apps.get_model('core', 'User')
+    users = User.objects.all()
+    for user in users:
+        user.anonymous_user_id = uuid.uuid4()
+        user.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0010_remove_user_anonymous_user_id'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='anonymous_user_id',
+            field=models.UUIDField(default=uuid.uuid4, null=True),
+        ),
+        migrations.RunPython(create_anonymous_user_ids),
+        migrations.AlterField(
+            model_name='user',
+            name='anonymous_user_id',
+            field=models.UUIDField(default=uuid.uuid4, editable=False, unique=True),
+        ),
+    ]

edx_exams/apps/core/models.py

@@ -1,4 +1,5 @@
 """ Core models. """
+import uuid
 
 from django.contrib.auth.models import AbstractUser
 from django.db import models
@@ -18,8 +19,11 @@ class User(AbstractUser):
 
     """
     full_name = models.CharField(_('Full Name'), max_length=255, blank=True, null=True)
+
     lms_user_id = models.IntegerField(null=True, db_index=True)
 
+    anonymous_user_id = models.UUIDField(default=uuid.uuid4, editable=False, unique=True)
+
     @property
     def access_token(self):
         """