Hi guys,
I'm starting to use association proxies for the first time and I've come
across an issue that has me stumped.
Basically, I want to use the association proxy's "creator" argument in
order to create the intermediate object.
The intermediate object has foreign keys that point to the primary class
(the one with the AP) and another 3rd class.
So when creating that intermediate object, I want to be able to point to
data within the primary objects instance (I need something for the FK
column to point to!)
This is what I'm trying to do in code:
chars = association_proxy('char_links', 'char', creator=lambda c: CharLink(
word_id=self.id, char_id=c.id))
But obviously it doesn't work, because my uninstantiated class definition
doesn't know what 'self' is.
This seems like something I should be able to do, as the creator function
is only ever going to be called from an instance of my model (not just the
class definition), so I should have access to the instance's props, no?
I've found this StackOverflow question that seems to be having the same
problem, but the only answer seems hacky and to be honest I don't really
understand it.
<https://stackoverflow.com/questions/38284423/access-parent-object-from-sqlalchemy-association-proxy-creator>
Any tips?
~Connor
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