#28073: RemoveField.state_forwards() crashes with AttributeError: 'NoneType' object has no attribute 'is_relation' ---------------------------------+------------------------------------ Reporter: Logan Gunthorpe | Owner: nobody Type: Bug | Status: new Component: Migrations | Version: 1.11 Severity: Normal | Resolution: Keywords: | Triage Stage: Accepted Has patch: 0 | Needs documentation: 0 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 0 | UI/UX: 0 ---------------------------------+------------------------------------
Comment (by Shaun Stanworth): I have seen and resolved this issue -- I had a migration containing a RenameField followed by a AlterField on the same field. By moving the RenameField to the previous migration, I was able to replay the migrations safely. So I think the issue is either: the application of rename states (state_forwards) has an error, or there is an AlterField.reduce method that tries to squash renames into an alteration. -- Ticket URL: <https://code.djangoproject.com/ticket/28073#comment:17> 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/065.c20c8fc9734055574e0516734a09f7d5%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.