#25698: App without migrations depending on app with migrations fails on initial migrate call (postgres) ----------------------------------+-------------------------------------- Reporter: lucasmoeskops | Owner: nobody Type: Uncategorized | Status: new Component: Migrations | Version: 1.8 Severity: Normal | Resolution: Keywords: migrate postgres | Triage Stage: Unreviewed Has patch: 0 | Needs documentation: 0 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 1 | UI/UX: 0 ----------------------------------+-------------------------------------- Changes (by lucasmoeskops):
* needs_better_patch: => 0 * needs_tests: => 0 * needs_docs: => 0 Old description: > Simple test example: > In a new project add 'django.contrib.sites' and your main app to the > `INSTALLED APPS` setting. > Use postgres as database. > Make a model in your main app that uses a relation to > django.contrib.sites: > > {{{ > from django.contrib.sites.models import Site > class MyModel(models.Model): > my_site = models.ForeignKey(Site) > > }}} > > Migrate the project: > > {{{ > python manage.py migrate > }}} > > It will fail to migrate with the message: > `django.db.utils.ProgrammingError: relation "django_site" does not > exist`. This is because it tries to migrate the apps without migrations > before the apps with migrations. > > I guess the app should have at least one migration with a dependency to > django.contrib.sites. But maybe this needs to be documented. I couldn't > find it in the documentation. New description: Simple test example: In a new project add 'django.contrib.sites' and your main app to the `INSTALLED APPS` setting. Use postgres as database. Make a model in your main app that uses a relation to django.contrib.sites: {{{ from django.contrib.sites.models import Site class MyModel(models.Model): my_site = models.ForeignKey(Site) }}} Migrate the project: {{{ python manage.py migrate }}} It will fail to migrate with the message: `django.db.utils.ProgrammingError: relation "django_site" does not exist`. This is because it tries to migrate the apps without migrations before the apps with migrations. To solve the problem, the app should have at least one migration with a dependency to django.contrib.sites. But maybe this needs to be documented. I couldn't find it in the documentation. -- -- Ticket URL: <https://code.djangoproject.com/ticket/25698#comment:1> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/071.5d9ebe2e8d6c0e992c79eed16ecf699c%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.