GHZ wrote:
> Hi,
>
> I have a Subscriber and an Address table. Subscriber can have many
> Addresses
>
>
> mapper(Subscriber, subscriber_table, properties={
> 'addresses' : relation(Address, collection_class=Addresses,
> backref='customer')})
>
> From the a Subscriber object, I want to inspect all loaded objects in
> any collections, but do it quietly - without causing any more to load.
>
>
> class MyBase(object):
>
> @reconstructor
> def __my_init__(self):
> self.rules = []
>
> def get_all_rules_on_all_loaded_related_objects(self):
> for collection in (p for p in object_mapper
> (self).iterate_properties if type(p) is RelationProperty):
> # How to access this collection without causing it to
> load?
> # I want to look at the 'rules' property on all loaded
> objects
The collection will be present in the instance's __dict__ if it has been
loaded. So something like
if 'addresses' in self.__dict__:
# loaded, can access self.addresses without triggering db access
-j
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