Add migration file

backend/api/migrations/0017_example_uuid.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.8 on 2021-11-08 06:06
+
+from django.db import migrations, models
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0016_auto_20211018_0556'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='example',
+            name='uuid',
+            field=models.UUIDField(db_index=True, default=uuid.uuid4, editable=False, unique=True),
+        ),
+    ]