Hi Joel,
Although my application is deployed on the web it was written with the
goal of being redeployable as a desktop app, and to this end I have
been able to abstract away the web details so that I can code my
application very similarly to a desktop app.
The relevance here is that all
I rely heavily on the version_id_col feature and I would like to be
able to either explicitly increment the version, or have the version
incremented when a relationship changes. The issue here is that a
change in a relationship is a semantic change to the parent record and
should conflict with
Hi Joel!
pypapi.org is the bigest example a know.
It's using pyqt4, sqlalchemy and zope interfaces/schema/etc.
The only drawback for me, the code using too much italiano :)
Regards,
gbtami
On Sat, Jul 24, 2010 at 3:21 AM, Joel Mohler goo...@kiwistrawberry.us wrote:
Hello,
I'm a happy user of
table A,B
B.a_id=A.id
my code like this:
new_a=A()
session.begin()
session.add(new_a)
new_b=B()
new_b.a_id=new_a.id
session.add(new_b)
try:
session.commit()
except:
session.rollback()
raise
why new_b.a_id is None? how to do?
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On 7/24/2010 8:21 AM, manman wrote:
table A,B
B.a_id=A.id
my code like this:
new_a=A()
session.begin()
session.add(new_a)
new_b=B()
new_b.a_id=new_a.id
session.add(new_b)
try:
session.commit()
except:
session.rollback()
raise
why new_b.a_id is None? how to do?
I presume a.id
On Jul 24, 2010, at 2:33 AM, avdd wrote:
I rely heavily on the version_id_col feature and I would like to be
able to either explicitly increment the version, or have the version
incremented when a relationship changes. The issue here is that a
change in a relationship is a semantic change
gbtami, Thanks!
pypapi.org is the bigest example a know.
It's using pyqt4, sqlalchemy and zope interfaces/schema/etc.
The only drawback for me, the code using too much italiano :)
Indeed, too Italiano for me too, but the picture at
http://www.pypapi.org/chrome/site/pypapi.gif is worth a 1000
thanks.
if not use relation then how to do? i hate use ForeignKey or
ManyToMany.
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On Sat, 2010-07-24 at 07:06 -0700, manman wrote:
thanks.
if not use relation then how to do? i hate use ForeignKey or
ManyToMany.
So did the explicit call to session.flush() not work? Here it is again
for reference:
new_a = A()
session.begin()
session.add(new_a)
session.flush()
if use flush() then how to rollback ?
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flush is not commit. After a flush, you can still rollback.
2010/7/24 manman ne.man...@gmail.com
if use flush() then how to rollback ?
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new_a=A()
session.begin()
session.add(new_a)
session.flush()
new_b=B()
new_b.a_id=new_a.id
session.add(new_b)
try:
session.commit()
except:
session.rollback()
raise
this code is right? when error all be rollback?
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On Sat, 2010-07-24 at 08:06 -0700, manman wrote:
new_a=A()
session.begin()
session.add(new_a)
session.flush()
new_b=B()
new_b.a_id=new_a.id
session.add(new_b)
try:
session.commit()
except:
session.rollback()
raise
this code is right? when error all be rollback?
Should
I'm having trouble inheriting a synonym property from a mixin class.
It obviously works if the call to synonym() is on the child class and
just the get/set methods are left on the mixin. Here is an example:
from sqlalchemy import create_engine, Column, ForeignKey
from sqlalchemy.ext.declarative
Hello all,
I've made some modifications to the directed graph[1] example, of
primary interest to this email being the introduction Manufacturer
objects which act as owners of Nodes. My desire is to cascade the
deletion of a Manufacturer down to every Node and Edge, even if the
side of one Edge is
On Jul 24, 2010, at 5:40 PM, Nikolaj wrote:
I'm having trouble inheriting a synonym property from a mixin class.
It obviously works if the call to synonym() is on the child class and
just the get/set methods are left on the mixin. Here is an example:
from sqlalchemy import create_engine,
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