On Sun, Sep 5, 2021, at 6:41 PM, and...@acooke.org wrote:
> 
> I'm having a hard time understanding some of my own code, which no longer 
> works.  The only way I can see it having worked in the past is if 
> auto-flushing did not call before_flush, but commit did?  Is that possible?

autoflushing has always called before_flush.

> 
> Somehow I was managing to create instances (in Python) and populate them with 
> auto-generated key values from the database, but then filter out some objects 
> (those with certain attributes null) and never commit them to the database 
> (in before_flush).
> 
> I realise this is a somewhat confusing question, sorry, and I can probably 
> fix my code anyway.  I am just looking for some peace of mind in 
> understanding how on earth it ever worked.
> 
> Thanks,
> Andrew
> 
> 
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SQLAlchemy - 
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To post example code, please provide an MCVE: Minimal, Complete, and Verifiable 
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