On Wed, Jun 21, 2023, at 5:12 AM, Julien Cigar wrote:
> Hello,
>
> I'm trying to add a column_property to recursively load and merge some
> json column.
>
> I have the following:
> https://gist.github.com/silenius/1af1072abae5829f54584f1ea554e074 but I
> cannot figure how can I replace the '5011' at line 11 (which is the
> object primary key) with the "current" involved objet..?
>
> For example when I'm doing dbsession.get(MyClass, 1234) I cannot figure
> how reference the id in the column_property query
well you wouldnt hardcode the id like that, you'd need to make your query
correlated to the parent.
so it would select() from "ac" where "ac" is "aliased(class_)" , then correlate
to the class
.where(
class_.id == ac.id
).
as far as how that integrates into the CTE and all that you'd have to arrange
the geometry of the SELECT to work out correctly, I would start with something
very simple and build outwards.
correlated subquery column_property at
https://docs.sqlalchemy.org/en/20/orm/mapped_sql_expr.html#using-column-property
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