Hi all,
I must be missing something obvious here...
Let's suppose I have the following class:
class User(Base):
# ....
addresses = relation(Address, backref="user")
and I have a number which may be an ID of an Address object. How do I
check if the number is an ID of one of Addresses of a given User?
I could do that just iterating over the addresses:
for address in user.addresses:
if address.id == ID:
print "TADA!"
... but this doesn't seem like a good solution. There must be a way to
make SQLAlchemy to return the value.
(to make it a bit more interesting - the code needs to be generic,
i.e. the function just gets some SA-mapped object and property name,
so I can't just build a query manually like this -
addr = session.query(Address).filter(id=address_id).filter(user_id =
user.id).one()
- because I don't know what the join fields are (and if possible I'd
like this to work with many-to-many relations too)
)
Thanks!
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