j= ddlmZddlZGddZejedddZd Zd Zd Z dS) )datetimeNceZdZdZejejejdZ ejejejdZ dS) TimestampaAdds `created` and `updated` columns to a derived declarative model. The `created` column is handled through a default and the `updated` column is handled through a `before_update` event that propagates for all derived declarative models. :: import sqlalchemy as sa from sqlalchemy_utils import Timestamp class SomeModel(Base, Timestamp): __tablename__ = 'somemodel' id = sa.Column(sa.Integer, primary_key=True) F)defaultnullableN) __name__ __module__ __qualname____doc__saColumnDateTimerutcnowcreatedupdateda/lsinfo/ai/hellotax_ai/base_platform/venv/lib/python3.11/site-packages/sqlalchemy_utils/models.pyrrsR$bi X_uMMMGbi X_uMMMGGGrr before_updateT) propagatec6tj|_dS)N)rrr)mapper connectiontargets rtimestamp_before_updaters_&&FNNNrz ctj|}g}|s|jj}|D]^}|j|j}||jvrt}nt|}| d ||f_d |j jd |S)N=z{}({})z, )r inspectrcolumnskeysattrs loaded_valueunloadedNOT_LOADED_REPRreprappendjoinformat __class__r)selffieldsstate field_reprskeyvalues r_generic_repr_methodr0's Jt  EK -%**,,33 C - %. #EEKKE388S%L112222 ??4>2DIIk4J4J K KKrctdkr'tdrd}d|_|Sfd}|S)aAdds generic ``__repr__()`` method to a declarative SQLAlchemy model. In case if some fields are not loaded from a database, it doesn't force their loading and instead repesents them as ````. In addition, user can provide field names as arguments to the decorator to specify what fields should present in the string representation and in what order. Example:: import sqlalchemy as sa from sqlalchemy_utils import generic_repr @generic_repr class MyModel(Base): __tablename__ = 'mymodel' id = sa.Column(sa.Integer, primary_key=True) name = sa.Column(sa.String) category = sa.Column(sa.String) session.add(MyModel(name='Foo', category='Bar')) session.commit() foo = session.query(MyModel).options(sa.orm.defer('category')).one(s) assert repr(foo) == 'MyModel(id=1, name='Foo', category=)' rc$t|dSN)r+r0)r*s rzgeneric_repr..Ws';D'N'N'Nrcfd|_|S)Nc&t|Sr4r5)r*r+s rr6z1generic_repr..decorator..[s(<)))r)__repr__)clsr+s r decoratorzgeneric_repr..decoratorZs"CLJr)lencallabler9)r+rr;s` r generic_reprr>7s`< 6{{aHVAY//NN       r) r sqlalchemyr revent listens_forrr$r0r>rrrrBsNNNNNNNN.iDAA''BA' ! L L L )))))r