This departs a bit from the example, because you are caching the youngest
and oldest ids onto the Parent object. is that necessary for your usage?
> Now my question is: how can I introduce a set/list of all children on the
parent?
The line you commented out from the example was either:
children = relationship("Child")
children = relationship("Child", back_populates="parent")
both of those lines create an iterable list of all the Child objects on the
`children`
There are a handful of ways you could structure this. It really depends on
your data model and usage patterns.
Off the top of my head, the simplest way to accomplish this would be to add
a "parent_id" column on the child table, and then create a relationship for
"children" that correlates the `Parent.id` to `Child.parent_id`.
That change might not work with your data model if a Child can have
multiple parents.
--
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.
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