我有一个在Heroku的业余帐户上运行的Django 2.1 / Python 3.6应用程序。此部署的第一个版本进展顺利。现在，我需要向现有模型添加更多字段，还需要从本地设置（通过更改运行非常顺利）向Heroku添加其他模型。我照常
git push heroku master
将新代码移交给Heroku。然后我都做
heroku run python manage.py makemigrations
heroku run python manage.py migrate
第一步给我
Running python manage.py makemigrations on ⬢ hirt-family-v4... up, run.3753 (Free)
Migrations for 'users':
users/migrations/0005_auto_20190425_1452.py
- Create model XtraPhotos
- Add field phone_number to person
- Add field parent to xtraphotos
很好，但是迁移也随消息一起返回
Running python manage.py migrate on ⬢ hirt-family-v4... up, run.5929 (Free)
Operations to perform:
Apply all migrations: account, admin, auth, contenttypes, sessions, sites, users
Running migrations:
No migrations to apply.
Your models have changes that are not yet reflected in a migration, and so won't be applied.
Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them.
我试图逐步进行，这意味着我一个接一个地添加每个丢失的字段，但这也导致了本质上相同的问题。
答案 0 :(得分：2)
请勿使用assert @event.seats == 0创建迁移文件。
heroku run python manage.py makemigrations