TypeError: '_updated' is an invalid keyword argument for Network

Hi,

When I try to post a JSON payload via my endpoint /network, I get the following error.

TypeError: '_updated' is an invalid keyword argument for Network I would assume that inserting into the DB via POST should be fairly trivial without requiring anything else.

Am I missing any additional configuration at all?

Eve v0.7.10 Eve-SQLAlchemy v0.7.1 Flask:0.12 Werkzeug: 0.11.15

Thanks!

Full error message is here: https://gist.github.com/virtualvinodh/ced063f382a2cd1c397cee28f736b9ea

Base = declarative_base()
metadata = Base.metadata

class Network(Base):
    __tablename__ = 'network'
    __table_args__ = {'comment': 'Networks group.'}

    network_id = Column(NUMBER(22, 0, False), primary_key=True, comment='Network identity')
    name = Column(VARCHAR(50), comment='Network name')
    created_date = Column(DateTime, server_default=text("SYSDATE"), comment='Internal / log field. Timestamp of creation')
    created_by = Column(VARCHAR(40), nullable=False, server_default=text("'admin' "), comment='Internal / log field. Username who created the object')

SETTINGS = {
    'DEBUG': True,
    'RESOURCE_METHODS': ['GET', 'POST'],
    'SQLALCHEMY_DATABASE_URI': oracle_connection_string,
    'SQLALCHEMY_ECHO': True,
    'SQLALCHEMY_RECORD_QUERIES': True,
    'SQLALCHEMY_TRACK_MODIFICATIONS': False,
    'DOMAIN': DomainConfig({
        'network': ResourceConfig(Network)
    }).render()
}

app = Eve(auth=None, settings=SETTINGS, validator=ValidatorSQL, data=SQL)

db = app.data.driver
Base.metadata.bind = db.engine
db.Model = Base

app.run(debug=True)

I fixed this by adding a bunch of conditionals at sqlalchemy.ext.declarative.base

I'm sure this isn't the right way to do this.

Line: 386

cls_ = type(self)
    for k in kwargs:
        if k == "_updated" or k == "_created" or k=="_etag":
            pass
        elif not hasattr(cls_, k):
            raise TypeError(
                "%r is an invalid keyword argument for %s" % (k, cls_.__name__)
            )
        setattr(self, k, kwargs[k])

You haven't created _updated field in your Network class which is necessary for POST operations as it is part of Eve core functionality.
From Eve-sqlalchemy tutorial (https://eve-sqlalchemy.readthedocs.io/en/latest/tutorial.html#eve-settings):

We have used CommonColumns abstract class to provide attributes used by Eve, such as _created and _updated. These are not needed if you are only reading from the database. However, if your API is also writing to the database, then you need to include them.