On most of my tables I have the concept of an owner, a reference to
the user who created the row. On most of my other relations, I need to
filter by owner==current_user.
All the classes that have an owner are marked (separate parent class,
I'm using elixir) so I could probably come up with a general solution.
An idea of how to do this might be to define:
def __getattr__(self, attr):
rel_attr = attr + '_id'
field = getattr(self.table.c, rel_attr, None)
if field and field.foreign_keys:
rel_table = field.foreign_keys[0].constraint.table
objs = meta.Session.query(rel_table).filter
(owner_id==current_user.id).all()
setattr(self, attr, objs) # XXX not sure that this is a good
idea
return objs
# XXX quite sure this won't work, maybe need to call super(Me,
self).__getattr__(attr) ?
raise AttributeError(attr)
If you have some advice on the XXX comments above or an idea to
improve the solution / better solution, please give me a hand.
Thanks,
-Dan
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