Specify a relation in a mapper. Look at the examples in the ORM tutorial
part of the documentation.
assuming you have already defined the tables:
mapper (Profile, profiles_table, properties={
'skills':relation(skills_table, backref='user')})
This will give you a list of skills related to a profile, and each skill
related to a user.
--
Mike Conley
On Sat, Aug 15, 2009 at 5:19 PM, Sid <crulshor...@gmail.com> wrote:
>
> Hi,
>
> I'm new to SQLAlchemy and ORMs in general so I have a couple of
> questions.
>
> Basically I have a class called Profile that contains the following
> members:
>
> class Profile:
> def __init__(self):
> self.user_id = none
> self.first_name = none
> self.last_name = none
> self.email = none
> self.birth_date = none
> self.skills = ()
>
> The skills data attribute is just a tuple of strings. The following is
> the database structure I was planning to use:
>
> Profiles Table
>
> | user_id | first_name | last_name | email | birth_date |
>
> Skills Table
>
> | skill_id | skill | user_id |
>
> So the Skills table has a foreign key called user_id which defines
> what user that skill belongs to.
>
> Now, I was looking through the documentation and the best way I found
> to map multiple tables to one class was to use the join keyword. Is
> this the method I should use?
>
> Also, I'm wondering can ORMs map lists/tuples/dictionaries to one
> column in a table? So, for example in this case the Profiles table
> would just have an extra column called skills and I no longer would
> need a separate table to store skills as I do currently? I don't think
> this is possible but I thought I'd just ask to be sure.
>
> Thanks,
>
> Sid
>
> >
>
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