Django manage.py:在其依赖之前应用迁移

本文介绍了Django manage.py:在其依赖之前应用迁移的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

When running python manage.py migrate I encounter this error:

django.db.migrations.exceptions.InconsistentMigrationHistory: Migration <appname>.0016_auto_<date2>_<time2> is applied before its dependency <appname>.0001_squashed_0015_auto_<date1>_<time1>

running showmigrations returns:

<appname> [X] 0001_squashed_0015_auto_<date1>_<time1> (15 squashed migrations) [X] 0016_auto_<date2>_<time2> [ ] 0017_<modelname>_squashed_0019_auto_<date3>_<time3> (3 squashed migrations)

I was trying out django-extensions yesterday, when it all got messed up after me running some direct SQL queries and I reset hard using git. I'm still learning about migrations, so I don't understand what is wrong, since it seems to me that both migrations already have been applied.

Thank you for your help!

解决方案

You have squashed the migrations, so one of the dependencies that 0016_auto_<date2>_<time2> had is now part of the newly created squashed migrations. Meanwhile the 0016_auto_<date2>_<time2> has already been run and now you're trying to run the squashed migration.

I personally don't know if there's any way to fix this automatically. You will need to fix the issues yourself. If you have version control, revert these changes and try to rethink how you should squash the migration without affecting old ones.