0001_initial.py

class Migration(migrations.Migration):

    initial = True

    dependencies = [
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name='Post',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('created_at', models.DateTimeField(auto_now_add=True)),
                ('updated_at', models.DateTimeField(auto_now=True)),
                ('title', models.CharField(max_length=255)),
                ('post', models.TextField()),
                ('created_by', models.ForeignKey(blank=True, null=True, on_delete=None, related_name='blog_post_created_by_related', to=settings.AUTH_USER_MODEL)),
                ('updated_by', models.ForeignKey(blank=True, null=True, on_delete=None, related_name='blog_post_updated_by_related', to=settings.AUTH_USER_MODEL)),
            ],
            options={
                'abstract': False,
            },
        ),
    ]

0001_initial_adjusted.py

class Migration(migrations.Migration):

    initial = True

    dependencies = [
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name='Post',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('title', models.CharField(max_length=255)),
                ('post', models.TextField()),
                ('created_at', models.DateTimeField(auto_now_add=True)),
                ('updated_at', models.DateTimeField(auto_now=True)),
                ('created_by', models.ForeignKey(blank=True, null=True, on_delete=None, related_name='blog_post_created_by_related', to=settings.AUTH_USER_MODEL)),
                ('updated_by', models.ForeignKey(blank=True, null=True, on_delete=None, related_name='blog_post_updated_by_related', to=settings.AUTH_USER_MODEL)),
            ],
            options={
                'abstract': False,
            },
        ),
    ]

base_model.py

from django.db import models
from django.contrib.auth.models import User


class BaseModelMixin(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    created_by = models.ForeignKey(User, on_delete=None, related_name="%(app_label)_%(class)_related")
    updated_by = models.ForeignKey(User, on_delete=None, related_name="%(app_label)_%(class)_related")

    class Meta:
        abstract = True

models.py

from blog_shared.models import BaseModelMixin
from django.db import models


class Post(BaseModelMixin):
    title = models.CharField(max_length=255)
    post = models.TextField()