A little correction for any future visitor:
compute= lambda row: "%(username)s-%(songname)s-%(playlist_name)s"),
should be:
compute= lambda row: "%(username)s-%(songname)s-%(playlist_name)s" %row),
Anyway the solution is great. Thanks a lot.
El miércoles, 12 de septiembre de 2012 00:54:45 UTC+2, rochacbruno escribió:
>
> db.define_table('likes',
> Field('username', 'reference auth_user'),
>
> Field('songname', 'reference songs'),
> Field('playlist_name', 'reference playlist'),
> Field('unique_key', unique=True, notnull=True, compute= lambda row:
> "%(username)s-%(songname)s-%(playlist_name)s"),
>
> )
>
> Now on any attempt to insert duplicates DAL will have an exception,
> because unique_key is unique and the computation will try to add same
> values.
>
> try:
> db.likes.insert(......)
> except:
> #YOU ALREADY LIKE THIS
>
>
> *Bruno Cezar Rocha** - @rochacbruno*
> rocha...@gmail.com <javascript:> | Mobile: +55 (11) 99210-8821
> www.CursoDePython.com.br | www.rochacbruno.com.br
> Blog: Using Python to get all the external links from a
> webpage<http://rochacbruno.com.br/using-python-to-get-all-the-external-links-from-a-webpage/>
> Get a signature like this.
> <http://r1.wisestamp.com/r/landing?promo=18&dest=http%3A%2F%2Fwww.wisestamp.com%2Femail-install%3Futm_source%3Dextension%26utm_medium%3Demail%26utm_campaign%3Dpromo_18>
> Click
> here.<http://r1.wisestamp.com/r/landing?promo=18&dest=http%3A%2F%2Fwww.wisestamp.com%2Femail-install%3Futm_source%3Dextension%26utm_medium%3Demail%26utm_campaign%3Dpromo_18>
>
>
>
>
>
--
---
You received this message because you are subscribed to the Google Groups
"web2py-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to web2py+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
