On Dec 9, 2007, at 10:55 PM, Allen Bierbaum wrote:
>
> I am using SA 0.3.11 and I would like to know if there is a way to get
> a query object from a relation property. I have several one-to-many
> relationships in my application. These are all setup and work very
> well, but I find that I often want to perform further filtering of the
> objects in the relationship list property. I could write python code
> to do it, but if I could get SA to do it on the server, then all the
> better.
it is the "dynamic" relation that you want, but for 0.3 you can write
your own read-only property via:
class MyClass(object):
def _get_prop(self):
return object_session(self).query(ChildClass).with_parent(self,
'attributename')
attributename = property(_get_prop)
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