I've got a simple mapping between User and Blog:
# Parent
user_table = Table('user', metadata,
Column('id', Integer, primary_key=True),
Column('username', String(50)),
Column('password', Unicode(50)),
)
# Child
blog_table = Table('blog', metadata,
Column('id', Integer, primary_key=True),
Column('title', String(100)),
Column('date_created', DateTime()),
Column('user_id', Integer, ForeignKey('user.id'))
)
...
mapper(User, user_table, properties = {
'blogs': relation(Blog, backref='user')
})
mapper(Blog, blog_table)
My foreignkeys aren't being saved/stored properly. No matter how many
'children' I create, the foreignkey only stays saved with the most
recently added:
sqlite> select * from blog;
1|blog1|2009-06-05 19:41:33.555387|
2|blog2|2009-06-05 19:41:42.551838|
3|blog3|2009-06-05 19:42:28.280046|
4|blog4|2009-06-05 19:44:19.180090|
5|blog5|2009-06-05 19:46:38.580777|1
sqlite>
Here's how they are being saved.
My controller saveblog():
@expose()
def saveblog(self, **input):
if request.method == 'POST':
if not input['blog_title']:
msg = 'You must give a title name.'
redirect('/createblog', message=msg)
try:
session_user = cherrypy.session['username']
user = session.query(User).filter_by
(username=session_user).one()
user.blogs = [Blog(title=input['blog_title'],
date_created=datetime.datetime.now())]
msg = 'Successfully created blog %s.' % input
['blog_title']
redirect('/', message=msg)
except KeyError:
redirect('/', message='Session lost or timed out')
except NoResultFound:
redirect('/', message='Error: database corrupt.')
Why is it doing this? Please help, thanks.
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