I have the following entities:
class Responder(Entity):
cleavage_values = OneToMany('CleavageValue')
class CleavageValue(Entity):
cleavage = ManyToOne('Cleavage', colname='cleavage_id',
onupdate='CASCADE',
ondelete='CASCADE',
primary_key=True)
responder = ManyToOne('Responder', colname='responder_id',
onupdate='CASCADE',
ondelete='CASCADE',
primary_key=True)
class Cleavage(Entity):
...
class SpiderCleavage(Cleavage):
...
class MapCleavage(Cleavage):
...
is there a simple way to filter the Responder's cleavage_values list
to get only those cleavage_values that belong to a SpiderCleavage?
My idea would be something like that:
responder.cleavage_values.filter(CleavageValue.cleavage.cleavage_id.in
(SpiderCleavage.query.all()))
Cheers,
Lea
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