Migration 03 branch.

migrations/0002_testmodel_created_by.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.29 on 2021-07-08 13:04
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('demo', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='testmodel',
+            name='created_by',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+        ),
+    ]

migrations/0003_auto_20210708_1317.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.29 on 2021-07-08 13:17
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('demo', '0002_testmodel_created_by'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='testmodel',
+            name='updated_by',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='+', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='testmodel',
+            name='created_by',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='+', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

models.py

@@ -1,4 +1,5 @@
 import django
+from django.conf import settings
 from django.db import models
 from django.utils.translation import gettext_lazy as _
 
@@ -9,6 +10,9 @@ class TestModel(models.Model):
     name = models.CharField(max_length=500)
     age = models.PositiveIntegerField(default=500)
 
+    created_by = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, related_name='+', on_delete=models.CASCADE)
+    updated_by = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, related_name='+', on_delete=models.CASCADE)
+
     if django.VERSION < (2, 1):
         active = models.NullBooleanField()
     else: