Thank you Michael ,
> you only need a single relation() + backref(), "books<->stock".
did you mean like this ?
class Stock(declarative_base):
__tablename__ = 'tbl_stock'
....
....
....
pass
class Book(declarative_base):
__tablename__ = 'tbl_books'
....
....
stock = relation('Stock', backref=backref
('tbl_books',order_by=id))
if so how can i retrieve all the books in a particular stock ??
in my case i could have done it by
>>> ins_stock = session.querry(Stock).filter(id=100).one()
>>> print ins.stock.books
[<book1 object><book2 object> ...]
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