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POAlembic: How to migrate custom type in a model?
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2013-03-27T19:49:50.790
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2014-03-28T11:08:40.727
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My <code>User</code> model is <pre><code>class User(UserMixin, db.Model): __tablename__ = 'users' # noinspection PyShadowingBuiltins uuid = Column('uuid', GUID(), default=uuid.uuid4, primary_key=True, unique=True) email = Column('email', String, nullable=False, unique=True) _password = Column('password', String, nullable=False) created_on = Column('created_on', sa.types.DateTime(timezone=True), default=datetime.utcnow()) last_login = Column('last_login', sa.types.DateTime(timezone=True), onupdate=datetime.utcnow()) </code></pre> where <code>GUID</code> is a custom type as described in <a href="http://docs.sqlalchemy.org/en/rel_0_8/core/types.html#backend-agnostic-guid-type" rel="noreferrer">sqlalchemy docs</a> (Exactly same) Now when I run <pre><code>alembic revision --autogenerate -m "Added initial table" </code></pre> I get my <code>upgrade()</code> as <pre><code>def upgrade(): ### commands auto generated by Alembic - please adjust! ### op.create_table('users', sa.Column('uuid', sa.GUID(), nullable=False), sa.Column('email', sa.String(), nullable=False), sa.Column('password', sa.String(), nullable=False), sa.Column('created_on', sa.DateTime(timezone=True), nullable=True), sa.Column('last_login', sa.DateTime(timezone=True), nullable=True), sa.PrimaryKeyConstraint('uuid'), sa.UniqueConstraint('email'), sa.UniqueConstraint('uuid') ) ### end Alembic commands ### </code></pre> but during applying upgrade -> <code>alembic upgrade head</code>, I see <pre><code>File "alembic/versions/49cc74d0da9d_added_initial_table.py", line 20, in upgrade sa.Column('uuid', sa.GUID(), nullable=False), AttributeError: 'module' object has no attribute 'GUID' </code></pre> How can I make it work with <code>GUID</code>/custom type here?
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<python><sqlalchemy><flask-sqlalchemy><alembic>
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Alembic: How to migrate custom type in a model?
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