Michael,
I think for my case it can be solved (I can dispense with sqlahelper)
although it is very handy. I am not sure if I speak for all use cases
though.
Ahmed
On Dec 30 2011, 2:29 am, Michael Bayer <mike...@zzzcomputing.com>
wrote:
> On Dec 29, 2011, at 12:20 AM, Ahmed wrote:
>
>
>
>
>
>
>
>
>
> >> Without it
> >> I would expect the library to dynamically define the User class based on a
> >> Base and Session that I supply to it, it would then return me the new User
> >> class using that Base.metadata, and I could track that User class within my
> >> app.
>
> > Before I heard about sqlahelper, I was starting to code using this
> > approach.
> > However, the way sqlalchemy functions now, makes it impossible to go
> > further with this approach if you will be using relationships. (Mixins
> > were a great addition to sqlalchemy 0.7 which gives us more
> > flexibility to using sqlalchemy as a third party lib. However, there
> > are still missing bits.)
>
> > I wouldn't have resorted to sqlahelper if not for two things (might be
> > actually one):
>
> > groups = relationship("Group", secondary=user_groups_table)
>
> > the secondary argument only accepts passing a Table object. if it
> > accepts a string (a table name to look up, for example, that is
> > evaluated at mapping time) I wouldn't have resorted to
> > passing my base around. The obstacle is that to build a table you have
> > to have your base at hand.
>
> It's documented that you can pass a lambda:
>
> relationship("Group", secondary=lambda:
> Base.metadata.tables['user_groups_table'])
>
> the string is accepted there as well, just not documented (this is fixed in
> r58937c3f4abe and is building now):
>
> relationship("Group", secondary="user_groups_table")
>
> So with that a given, do we still have a strong need for sqlahelper ?
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