On 12 mai, 19:16, Michael Bayer <[EMAIL PROTECTED]> wrote:
> lets all repeat the mantra...."association tables with any columns
> beyond the two foreign keys use the association object pattern". I
> guess its a little too wordy to be catchy. Documented
> athttp://www.sqlalchemy.org/docs/04/mappers.html#advdatamapping_relatio...
> .
>
> On May 12, 2008, at 10:45 AM, [EMAIL PROTECTED] wrote:
Thanks for answering and for your great work, Michael.
Sorry to ask stupid questions but I am learning...
You remind me that "association tables with any columns beyond the
two foreign keys use the association object pattern"
I saw that.
I thought that is what I did in the answerMapper or the askMapper and
the questionMapper which link the tables users and questions).
Isn't it what I have done ?
No ?
If not, could you please tell me what is wrong in my model ?
May be the backref in the questionMapper should not be 'questions' ?
(See: # ManyToMany AnswerAssociation between questions and users
'users': relation(AnswerAss,
backref='questions') )
What I can't manage to do corresponds to the Mapper configuration
tutorial (Association object):
"# create parent, append a child via association
p = Parent()
a = Association()
a.child = Child()
p.children.append(a)"
I thought I could do:
q = Question(question = 'blabla')
a = askAss()
a.users = User(user_name = 'Michael')
q.users.append(a)
Python forwards this error: "AttributeError: type object 'AskAss' has
no attribute 'questions' ".
I am a bit lost ...
Thanks again for any help
Dominique
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