Sebastian Elsner wrote: > Hello, > > I have an association object declaratively with three primary keys, but on > insert, the first (id) is not autoincremented. Please see test the code > below
known sqlite limitation, described at http://www.sqlalchemy.org/docs/reference/dialects/sqlite.html?highlight=sqlite#auto-incrementing-beahvior > > > > > from sqlalchemy import create_engine, Column,Integer, String, ForeignKey > from sqlalchemy.ext.declarative import declarative_base > from sqlalchemy.orm import sessionmaker,relation, backref > > engine = create_engine("sqlite:///:memory:",echo=False) > Base=declarative_base() > > > class Child(Base): > > __tablename__="Child" > > id=Column(Integer,primary_key=True) > > class Association(Base): > > __tablename__="Association" > > id=Column(Integer,primary_key=True) > > parent_id=Column(Integer,ForeignKey("Parent.id"),primary_key=True) > child_id=Column(Integer,ForeignKey("Child.id"),primary_key=True) > > child=relation(Child,backref="parents") > > data=Column(String(32)) > > def __init__(self): > self.data="some text" > > class Parent(Base): > __tablename__="Parent" > > id=Column(Integer, primary_key=True) > > children=relation(Association,backref=backref("parent")) > > Base.metadata.create_all(engine) > Session=sessionmaker(bind=engine) > session = Session() > > p=Parent() > a=Association() > a.child=Child() > p.children.append(a) > > session.add(p) > session.query(Parent).all() > > > I need the id for another 1:n realtion with the association object. What > am I missing here? > > > Thanks > > Sebastian > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To post to this group, send email to sqlalch...@googlegroups.com. > To unsubscribe from this group, send email to > sqlalchemy+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sqlalchemy?hl=en. > > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
