On Wed, Jul 26, 2017 at 5:15 PM, Asif Mahmud <ams.ee...@gmail.com> wrote: > 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?
no, because _sa_adapter is private. The collection_adapter() function should be used to access this attribute. > > Best wishes - > Asif Mahmud Shimon > > > On Thu, Jul 27, 2017 at 1:32 AM, Mike Bayer <clas...@zzzcomputing.com> > wrote: >> >> >> >> On Jul 26, 2017 1:18 PM, "Asif Mahmud" <ams.ee...@gmail.com> 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 sqlalchemy+unsubscr...@googlegroups.com. >> To post to this group, send email to sqlalchemy@googlegroups.com. >> 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 >> sqlalchemy+unsubscr...@googlegroups.com. >> To post to this group, send email to sqlalchemy@googlegroups.com. >> 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 sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > 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 sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
