django heroku makemigrations忽略了模型的变化

Question

我从models.py中删除了两个模型，当我运行makemigrations并在本地迁移时，一切都很好。当我在Heroku上运行makemigrations时，我收到以下消息，其中Building和BuildingInstance是我删除的模型：

Migrations for 'hello':
0002_building_buildinginstance.py:
- Create model Building
- Create model BuildingInstance

当我运行迁移时，我得到：

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.

我按照here步骤操作，并尝试按照建议here在本地和Heroku上压缩迁移。我该如何解决这个问题？

Answer 1

正如我在这里多次写过的那样，你一定不能在Heroku上运行makemigrations。在本地运行，提交结果，然后在Heroku上运行migrate。