3e7a44cbe1e2_add_versions_to_predefined_applications.py 文件源码

def downgrade():
    bind = op.get_bind()
    Base.metadata.bind = bind
    ### commands auto generated by Alembic - please adjust! ###
    op.add_column(u'predefined_apps', sa.Column('template', sa.TEXT(),
                                                nullable=True))
    op.drop_column(u'predefined_apps', 'is_deleted')

    downgrade_data(bind)

    op.alter_column(u'predefined_apps', u'template', nullable=False)

    op.drop_column(u'pods', 'template_version_id')
    op.drop_table('predefined_app_templates')
    ### end Alembic commands ###