I accidentally deleted the migrations folder in Django

Question

I am using Django, and Postgre for the DB. So I was done with all the migrations, but then I accidentally deleted the migrations folder in my editor. So I did the 'python manage.py makemigrations' again in the terminal, hoping I can get the folder back, but it replied 'No changes detected.' What should I do to get the folder back? Is it wrong to just simply make migrations again? I've tried creating a new database and re-do the same process, but it still says 'No changes detected.'

I very much appreciate your help. :)

FWIW, that's what you use a *version control system* for, and secondarily computer backups… — deceze, Mar 04 '20 at 08:53
https://stackoverflow.com/questions/36153748/django-makemigrations-no-changes-detected — AnonymousUser, Jul 14 '21 at 03:58

Ajay saini · Answer 1 · 2021-03-15T06:25:06.770

13

If you have deleted all migrations then you have to reset the migrations and create again. don't worry, your DB will be safe.
Follow the below steps if you want to fix the migrations without loosing the database.

First Clear database migration history.

a. go to python shell python manage.py shell

b. type from django.db.migrations.recorder import MigrationRecorder

c. type MigrationRecorder.Migration.objects.all().delete()

Second, recreate migrations

Create a new folder migrations. Create a file named __init__.py inside the folder.

Run command python manage.py makemigrations.

Apply fake migration so your database schema and migration history sync.

python manage.py migrate --fake

edited Mar 15 '21 at 06:25

answered Mar 04 '20 at 09:33

Ajay saini

2,352
1
11
25

1

Did the steps, still getting the same results as last time. – AnonymousUser Jul 14 '21 at 03:47
I'm getting "No changes detected" – AnonymousUser Jul 14 '21 at 03:48
Have you checked that your django_migrations table is empty ?> – Ajay saini Jul 14 '21 at 07:00
I found the solution at https://stackoverflow.com/questions/36153748/django-makemigrations-no-changes-detected – AnonymousUser Jul 16 '21 at 06:33
This is magic worked like charm – Nikhil Badyal May 20 '22 at 02:50

score 0 · Answer 2 · answered Mar 04 '20 at 10:36

0

I have found this recipe (Scenario 2, to keep the existing development DB) works well. It can be applied to a single app, which is possibly trickier than resetting migrations on all apps at once.

answered Mar 04 '20 at 10:36

nigel222

7,582
1
14
22

Didn't work. Getting "No changes detected", every time. I tried different Scenarios. The one where you delete "db.sqlite3", I do not recommend to use, unless you have no problem creating a new superuser, because it will delete it. – AnonymousUser Jul 14 '21 at 03:55

score 0 · Answer 3 · answered Jul 14 '21 at 04:07

I now found the solution on Django - makemigrations - No changes detected

The solution was:

python3 manage.py makemigrations yourAppName

This is for macOS.

If you use Windows it's probably

py manage.py makemigrations yourAppName

and "yourAppName" should be the name of your app, not the same as in the example, only if your apps name is actually "yourAppName", then of course that will work.

score -1 · Answer 4 · answered Mar 04 '20 at 08:58

Try these following steps:

clear pyc cache: run python manage.py clear_pyc
Create new migrations folder if the old one is deleted and create an __init__.py file inside
Create the migrations again by running python manage.py makemigrations <your-app-name>

Like that you will recover the deleted migration, as you can migrate afterwards everything by running python manage.py migrate

score -2 · Answer 5 · answered Mar 04 '20 at 08:46

-2

Delete everything under the migrations folder

and type the following command

python manage.py makemigrations

answered Mar 04 '20 at 08:46

Zafer Cengiz

9
1

I accidentally deleted the migrations folder in Django

5 Answers5