Yes, if you use any validator IS_IN_SET or IS_IN_DB with
multiple=True
I think it is still very convenient and can simplify some of your
code. Yet on RDBS you can do joins and this should be used a
replacement for that.
On Aug 11, 9:51 pm, Jason Brower <encomp...@gmail.com> wrote:
> Should i worry about this on my setups with sqlite but i do not use gae?
> Almost all my setups are sqlite but on apachi fcgi.
> Best regards,
> jason
>
> ----- Original message -----
> > There was a problem with this which is now fixed.
> > This is a very important feature if you plan to develop locally
> > (sqlite) and deploy on GAE.
>
> > Massimo
>
> > On Aug 10, 4:18 am, mdipierro <mdipie...@cs.depaul.edu> wrote:
> > > Experimentally there is a new feature in trunk.
>
> > > Field('name','list:string')
> > > Field('name','list:integer')
> > > Field('name','list:reference other table')
>
> > > and new operators
>
> > > db.mytable.myfield.contains(4)
>
> > > which works for list:reference, list:integer, list:string, string and
> > > text types.
>
> > > The list: type are mapped differently on RDBS ([1,2,3]->'|1|2|3|') and
> > > on GAE (uses a string list propery). It is backward compatible with
> > > data stored using the IS_IN_DB(...,multiple=True). So here is an
> > > example of a program:
>
> > > # model
> > > db.define_table('product',Field('name'),format='%(name)s')
> > > db.define_table('purchase',Field('code'),Field('products','list:reference
> > > product'))
>
> > > # controller
> > > def products():
> > > db.product.id.represent=lambda id: A('click
> > > me',_href=URL('purchases_by_product',args=id))
> > > return
> > > dict(form=crud.create(db.product),items=db(db.product.id>0).select())
> > > def purchases():
> > > return
> > > dict(form=crud.create(db.purchase),items=db(db.purchase.id>0).select())
> > > def purchases_by_product():
> > > product_id=request.args(0)
> > > return
> > > dict(items=db(db.purchase.products.contains(product_id)).select())
>
> > > Now register some products. When you try register purchases you should
> > > automatically get a SELECT window with product names. The list of
> > > items should also show a comma separated list of product names.
>
> > > I have not tested this on GAE. I could use some tests. Please let me
> > > know.
>
> > > Massimo
