Split django models.py into multiple files inside folder (Django 3.0.4)

Question

I'm trying to split the models.py into multiple files inside a folder.

what is the proper way to do that ?

all the methods in the internet from 8 years ago and it's not working now.

UPDATE 1:

test1
    __init__.py
    admin.py
    apps.py
    tests.py
    views.py
    migrations
    models
        __init__.py
        comment.py
        like.py
        post.py
        profile.py

inside init.py

from django.db import models
from django.conf import settings

from .like import Like
from .post import Post
from .profile import Profile
from .comment import Comment

inside comment.py

class Comment(models.Model): 
    commented_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    for_post = models.ForeignKey(Post, on_delete=models.CASCADE)

inside like.py

class Like(models.Model): 
    liked_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    post = models.ForeignKey(Post, on_delete=models.CASCADE)

inside post.py

class Post(models.Model): 
    posted_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)

inside profile.py

class Profile(models.Model): 
    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)

when I try to makemigrations:

python manage.py makemigrations test1

I got this error:

(sandbox-qFsmxchL) λ python manage.py makemigrations test1
Traceback (most recent call last):
  File "manage.py", line 21, in <module>
    main()
  File "manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "C:\Users\USER\.virtualenvs\sandbox-qFsmxchL\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "C:\Users\USER\.virtualenvs\sandbox-qFsmxchL\lib\site-packages\django\core\management\__init__.py", line 377, in execute
    django.setup()
  File "C:\Users\USER\.virtualenvs\sandbox-qFsmxchL\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\USER\.virtualenvs\sandbox-qFsmxchL\lib\site-packages\django\apps\registry.py", line 114, in populate
    app_config.import_models()
  File "C:\Users\USER\.virtualenvs\sandbox-qFsmxchL\lib\site-packages\django\apps\config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "c:\users\USER\appdata\local\programs\python\python38-32\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "C:\Users\USER\Desktop\sandbox\test1\models\__init__.py", line 4, in <module>
    from .like import Like
  File "C:\Users\USER\Desktop\sandbox\test1\models\like.py", line 2, in <module>
    class Like(models.Model):
NameError: name 'models' is not defined

Answer 1

You can do that putting them into a models folder, like:

models/
   - __init__.py
   - model_1.py
   - model_2.py

and __init__.py should import all models contained in the other files

from .model_1 import Model1
from .model_2 import Model2

It is up to you to split them, depending on if you have a lot of models and if those are stricly related to each others.

Edit:

inside init.py

from .post import Post
from .like import Like
from .profile import Profile
from .comment import Comment

inside comment.py

from django.db import models
from django.conf import settings

from test1.models import Post


class Comment(models.Model):
    commented_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    for_post = models.ForeignKey(Post, on_delete=models.CASCADE)

inside like.py

from django.db import models
from django.conf import settings

from test1.models import Post


class Like(models.Model): 
    liked_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    post = models.ForeignKey(Post, on_delete=models.CASCADE)

inside post.py

from django.db import models
from django.conf import settings


class Post(models.Model): 
    posted_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)

inside profile.py

from django.db import models
from django.conf import settings


class Profile(models.Model): 
    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)