Migration 03 branch.

migrations/0002_testmodel_created_by.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.29 on 2021-07-08 13:04
+from __future__ import unicode_literals
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+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,
+                blank=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                to=settings.AUTH_USER_MODEL,
+            ),
+        ),
+    ]

migrations/0003_auto_20210708_1317.py

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.29 on 2021-07-08 13:17
+from __future__ import unicode_literals
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+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,
+                blank=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,
+                blank=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 +10,21 @@ 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,
+        blank=True,
+    )
+    updated_by = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        null=True,
+        related_name="+",
+        on_delete=models.CASCADE,
+        blank=True,
+    )
+
     if django.VERSION < (2, 1):
         active = models.NullBooleanField()
     else: