what version u use?
i tried your thing, that is
$ python -i zz.py
s = create_session()
j = s.query(Job)[0] #get first
del j.files[0]
s.flush()
and seems to work
before:
>>> for a in s.query(Job): print a.name, a.files
...
Job 1 [<__main__.File object at 0xb78ec72c>, <__main__.File object at
0xb78e666c>]
Job 2 [<__main__.File object at 0xb78ec72c>, <__main__.File object at
0xb78ec76c>]
after:
>>> for a in s.query(Job): print a.name, a.files
...
Job 1 [<__main__.File object at 0xb78e666c>]
Job 2 [<__main__.File object at 0xb78ec72c>, <__main__.File object at
0xb78ec76c>]
---------
the only line removed was the "from .....orm import *" - u shouldnt
use any of those internal stuff unless u know what u do.
ciao
svil
On Wednesday 13 June 2007 13:13:58 David Bolen wrote:
> from sqlalchemy import *
> from sqlalchemy.orm import *
>
> meta = BoundMetaData('sqlite:///')
>
> jobs = Table('jobs', meta,
> Column('id', Integer, primary_key=True),
> Column('name', String))
>
> files = Table('files', meta,
> Column('id', Integer, primary_key=True),
> Column('name', String))
>
> jobs_files = Table('jobs_files', meta,
> Column('job_id', Integer,
> ForeignKey('jobs.id')), Column('file_id', Integer,
> ForeignKey('files.id')))
>
>
> class Job(object):
> pass
> class File(object):
> pass
>
> mapper(File, files)
> mapper(Job, jobs,
> properties = { 'files': relation(File, lazy=False,
> backref=backref('jobs',
> lazy=False), secondary=jobs_files) })
>
> def setup():
> meta.create_all()
> s = create_session()
>
> f1 = File()
> f1.name = 'File 1'
> f2 = File()
> f2.name = 'File 2'
> fc = File()
> fc.name = 'File Common'
>
> j1 = Job()
> j1.name = 'Job 1'
> j2 = Job()
> j2.name = 'Job 2'
>
> s.save(j1)
> s.save(j2)
>
> j1.files.extend([f1, fc])
> j2.files.extend([f2, fc])
>
> s.flush()
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