bag.sqlalchemy.created_changed module

SQLAlchemy trick that makes it easy to implement timestamp columns.

Usage:

from bag.sqlalchemy.created_changed import created_changed, CreatedChanged

@created_changed
class MyModel(BaseModel, CreatedChanged):
    ...

class bag.sqlalchemy.created_changed.CreatedChanged

Bases: object

Mixin class that adds created and changed columns.

Must be used together with the @created_changed class decorator.

changed = Column(None, DateTime(), table=None, nullable=False)

created = Column(None, DateTime(), table=None, nullable=False)

bag.sqlalchemy.created_changed.created_changed(cls)

Decorate cls to update created and changed automatically.

If you use SQLAlchemy inheritance, apply this decorator to subclasses.