Ons <mribah....@gmail.com> wrote:
> Hello,
>
> I have a sqlalchemy model to which i want to add a column using alembic :
>
> from sqlalchemy_utils import UUIDType
> new_column = Column(UUIDType, primary_key=True)
>
> When i run alembic revision --autogenerate, it generates a migration script
> but when i run alembic upgrade head it throws the error below:
>
> op.add_column('my_model', sa.Column('my_model_uuid',
> sa.UUIDType(length=16), nullable=False))
> AttributeError: 'module' object has no attribute 'UUIDType'
>
> How can i configure alembic to generate migration scripts using data types
> from sqlalchemy_utils ?
First off, update to the latest alembic - your custom type will no longer
output as part of “sa.” - it will use __module__ instead.
Secondly, you can configure this fully. See
http://alembic.readthedocs.org/en/latest/autogenerate.html#autogen-module-prefix
for a full documentation section on just this issue.
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