Migrate DB

def db_migrate():
    """Migrate DB """
    print("Not ready for use")
    exit()
    cwd_to_sys_path()
    alembic = _set_flask_alembic()
    with application.app.app_context():
        p = db.Model.__subclasses__()
        print(p)

        # Auto-generate a migration
        alembic.revision('making changes')

        # Upgrade the database
        alembic.upgrade()