Unable to makemigrations in Django

Question

Problem statement:

• I am trying to create a new model in a new file - app1/models/model2.py
• I dont see any error when I try to makemigrations.
• But Django doesnt detect any changes.
• If I put the same code in my previous file app1/models/model1.py - makemigrations works.
• I have tried - python manage.py makemigrations app1 & python manage.py makemigrations

My basic model:

from django.db import models


class Xyz(models.Model):
    name = models.CharField(max_length=100)

I tried through pycharm & normal terminal. I am using UBuntu 20.04LTS.

I deleted all migration files then reran makemigrations for app1 , it only picked old changes. did not pick new Xyz model.

So perhaps there is something wrong in the way I am creating this new model2.py file. But I am creating it normally like model1.py. I even tried to copy paste and rename the same file. All my folder have init.py in them.

Answer 1

Try importing the app1.models.model2.Xyz class to the app1/models/__init__.py as it was resolved on my side.

app/models/model2.py

from django.db import models


class Xyz(models.Model):
    name = models.CharField(max_length=100)

Run 1: Unsuccessful

app/models/__init__.py

from models.model1 import *

Make migrations

$ python3 app/manage.py makemigrations
(0.000) SELECT @@SQL_AUTO_IS_NULL; args=None
(0.000) SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; args=None
(0.000) SELECT VERSION(); args=None
(0.000) SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; args=None
(0.000) SHOW FULL TABLES; args=None
No changes detected

Run 2: Successful

app/models/__init__.py

from models.model1 import *
from models.model2 import Xyz  # Add this line

Make migrations

$ python3 app/manage.py makemigrations
(0.000) SELECT @@SQL_AUTO_IS_NULL; args=None
(0.000) SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; args=None
(0.000) SELECT VERSION(); args=None
(0.000) SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED; args=None
(0.000) SHOW FULL TABLES; args=None
Migrations for 'app':
  app/migrations/0002_xyz.py
    - Create model Xyz