sqlalchemy flush() and get inserted id?

Question

I want to do something like this:

f = Foo(bar=\'x\')
session.add(f)
session.flush()

# do additional queries using f.id before commit()
print f.id # should b         


        

Answer 1

Thanks for everybody. I solved my problem by modifying the column mapping. For me, autoincrement=True is required.

origin:

id = Column('ID', Integer, primary_key=True, nullable=False)

after modified:

id = Column('ID', Integer, primary_key=True, autoincrement=True, nullable=True)

then

session.flush()  
print(f.id)

is ok!