Well, the logic currently does this to determine if the type is a SQLAlchemy
type:
elif mod.startswith("sqlalchemy"):
prefix = _sqlalchemy_autogenerate_prefix(autogen_context)
return "%s%r" % (prefix, type_)
else:
prefix = _user_autogenerate_prefix(autogen_context, type_)
return "%s%r" % (prefix, type_)
so for the moment you’ll need to implement the “render_item” function as
documented in
http://alembic.readthedocs.org/en/latest/autogenerate.html#affecting-the-rendering-of-types-themselves.
https://bitbucket.org/zzzeek/alembic/issue/261/for-type-namespace-startswith-sqlalchemy
is added.
Ons <mribah....@gmail.com> wrote:
> i am using the latest version (alembic 0.7.3). I still have the same error
> even after adding the user_module_prefix configuration. it still uses sa. as
> a prefix for types from sqlalchemy_utils.
>
> On Monday, January 5, 2015 6:11:35 PM UTC+1, Michael Bayer wrote:
>
>
> Ons <mriba...@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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