Thanks for prompt reply. Narrowed down the issue. If the transaction is committed, the query returns fine and processing does invoke process_result_value with correct/expected value. If the session is not committed (or just flushed), query doesn't invoke process_result_value unless if any row has null value for the column. I hope it is expected functionality, no? If yes, is there other hook that is invoked when objects/rows are fetched from cache?
On Wednesday, October 4, 2017 at 9:39:49 PM UTC-7, Mike Bayer wrote: > > On Wed, Oct 4, 2017 at 10:47 PM, sqlalchemy_mysql <[email protected] > <javascript:>> wrote: > > When query with specific column loads properly and I can see > > 'result_processor' and/or 'process_result_value' is invoked with correct > > value but when query directly on Model (no explicit column is specified > but > > all columns are queried in this case by default) invokes those methods > with > > None value. Is this known issue? are there any workaround? I tried both > > TypeDecorator approach and sub-type approach. > > result_processor works in all cases where the type is set up properly, > in order to see your problem you'd need to provide a complete example > (see the link for MCVE at the bottom of this email). > > > > > > -- > > 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] <javascript:>. > > To post to this group, send email to [email protected] > <javascript:>. > > 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.
