New model for alembic

I created a new model in the project, but it does not exist in the database. I modified the file “alembic.ini” with the following line:

sqlalchemy.url = sqlite: ////Volumes/MacHD/Git/project1/example.db

But when I type “autogenerate”, it presents the following error:

$ alembic revision --autogenerate -m "add intent table"
INFO  [alembic.runtime.migration] Context impl SQLiteImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
ERROR [alembic.util.messaging] Can't locate revision identified by '82184d7d1e88'

What do I need to do?

[frol]

That is the responsibility of Alembic and databases, so there is nothing we can do here. By the way, the databases with transactions support (PostgreSQL, MySQL InnoDB engine only) work as you expected (the changes will be rolled back on failure).

[luisdemarchi]

@frol and @khorolets I got it. I made a new class and created automatically. But I think now I have a bug to report:

the “migrate” generated a table creation and a table change I made manually. But in the middle of the script an error was generated since the table being changed could not contain data. I set up and executed the script again. There he went on to make another mistake, because the first function that was to create a table had already been executed.

What I think is a bug: I think if the script went wrong midway, I should undo all the actions from the beginning.