[Sqlalchemy-tickets] Issue #3050: support lambdas / strings in column_property (zzzeek/sqlalchemy)

[Mike B. <iss...@bi...>]

New issue 3050: support lambdas / strings in column_property
https://bitbucket.org/zzzeek/sqlalchemy/issue/3050/support-lambdas-strings-in-column_property

Mike Bayer:

mostly to support mixins, e.g.

class mymixin(object):
    bar = Column(Integer)
    foo = Column(Integer)

    @declared_attr
    def foo_plus_bar(cls):
        return column_property(lambda: cls.foo + cls.bar)