On Wed, Oct 4, 2017 at 2:22 AM, Tolstov Sergey <[email protected]> wrote: > I have some tables who have a strict many-to-many rules. But i can't > undestand, how i can create rules for them. For strict on one point i use > init check, such us: > > def __init__(self,**kwargs): > for i in kwargs.items():setattr(self,i[0],i[1]) > if 'AllocationResultValues' not in kwargs: > raise RuntimeError('Need AllocationResultValues') > > But if i use on both points - it's create error on another point. Can > someone help me, please?
if you are trying to check both sides you might do something like a before_insert() rule: http://docs.sqlalchemy.org/en/latest/orm/events.html?highlight=before_insert#sqlalchemy.orm.events.MapperEvents.before_insert > > -- > SQLAlchemy - > The Python SQL Toolkit and Object Relational Mapper > > http://www.sqlalchemy.org/ > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > --- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
