I walked through the dir of self and found this statement is the parent object - *self._sa_adapter.owner_state.object *. Is it safe to use this object for making more queries inside append method?
Best wishes - Asif Mahmud Shimon On Thu, Jul 27, 2017 at 1:32 AM, Mike Bayer <[email protected]> wrote: > > > On Jul 26, 2017 1:18 PM, "Asif Mahmud" <[email protected]> wrote: > > Hi, > Is there a way to get/retrieve the parent object from a collection class's > append/add method ? > > > From the method, call im_self to get the collection object itself, then > use collection_adapter ( http://docs.sqlalchemy.org/ > en/latest/orm/collections.html?highlight=collection_ > adapter#sqlalchemy.orm.collections.collection_adapter ) to get the > CollectionAdapter, then call adapter.owner_state.obj(). > > > I'd recommend passing the parent object around in the first place, however > as the above is esoteric and also runs the chance of failing if the parent > object has been garbage collected. > > -- > 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 a topic in the > Google Groups "sqlalchemy" group. > To unsubscribe from this topic, visit https://groups.google.com/d/ > topic/sqlalchemy/-z1_UZEgZ5g/unsubscribe. > To unsubscribe from this group and all its topics, 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.
