You are totally right, my mistake. Sorry about that, noob here. On Tuesday, November 12, 2019 at 12:16:12 PM UTC-6, Adam Johnson wrote: > > Hi Kevin, > > I feel like this is a support question more than a question around > developing Django, so I've pasted my canned response below. But to answer > your question: yes you have to downgrade your database while on version > 0.0.2. Django can't downgrade a migration without the file being there :) > It ignores all migrations named in the database that it doesn't have in the > local repository, to deal with removed apps, migration files, squashing, > etc. > > If you think the documentation is lacking, perhaps a section on third > party apps could be added to: > https://docs.djangoproject.com/en/2.2/topics/migrations/ . > > Thanks, > > Adam > > --- > > Hi! > > I think you've found the wrong mailing list for this post. This mailing > list is for the development of Django itself, not for support using Django. > This means the discussions of bugs and features in Django itself, rather > than in your code using it. People on this list are unlikely to answer your > support query with their limited time and energy. Read more on the mailing > lists at https://www.djangoproject.com/community/ > > For support, please use the NEW Django forum at > https://forum.djangoproject.com , django-users mailing list, or IRC > #django on Freenode, or a site like Stack Overflow. There are people out > there willing to help on those channels, but they might not respond if you > don't ask your question well. Stack Overflow's question guide can help you > frame it well: https://stackoverflow.com/help/how-to-ask . > > Also if you haven't read it, please take a look at Django's Code of > Conduct: https://www.djangoproject.com/conduct/ . These are our "ground > rules" for working well as a community, and will help you get the most out > of Django and our fantastic community. > > Thanks for your understanding, > > Adam > > On Tue, 12 Nov 2019 at 17:09, Kevin Sallée <kevin...@gmail.com > <javascript:>> wrote: > >> Hi, I'm new to Django so excuse me if it's a noob question. >> >> I have a Django app, let's call it "project", that uses a Django reusable >> app, let's call it "app", version controlled on github, and tagged. >> >> 1. I create a first version of the app with its initial 0001_initial.py >> migration file, tag it 0.0.1, and add it to "project" requirements.txt >> 2. I then run "python manage.py migrate app". This picks 0001_initial and >> applies the migration. >> 3. I do changes to app, add a field, I have 0002_model_newfield.py file, >> I tag it 0.0.2, and change the version required in requirements.txt >> 4. I run "python manage.py migrate app". This picks 0002_model_newfield >> and applies the migration. >> >> Now, what happens if I want to go back to version "0.0.1" of the app? I >> can change the requirements, reinstall the library, but migrate won't do >> much if I go back to a state where I have less migration files available. >> The only thing I can do, I think, is stay on "0.0.2", do a "python >> manage.py migrate app 0001", and then switch back to the "0.0.1" version. >> >> I haven't found any information on how you version control alongside with >> git and downgrade django reusable apps. Maybe there is an open source >> project that can provide some pointers? >> >> I'm just starting with this and I might have more complex dependencies to >> deal with, I just want to make sure I'm not missing something obvious here. >> >> Thanks >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django developers (Contributions to Django itself)" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to django-d...@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/django-developers/e7a1404d-bb4a-401d-bdc2-9d7de1ad8e71%40googlegroups.com >> >> <https://groups.google.com/d/msgid/django-developers/e7a1404d-bb4a-401d-bdc2-9d7de1ad8e71%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Adam >
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