Sorry to bump this up, but I have not been able of using unique as it is 
described here (no validators).

Also I have tried to use instead of unique IS_NOT_IN_DB as in this other 
thread is suggested: 
https://groups.google.com/forum/?fromgroups=#!searchin/web2py/gae$20unique/web2py/ZepLjcBowZs/FuKiSYZGzUAJ
 ; 
but same results

Introducir código aquí...db.define_table('likes',
                          Field('user_id', 'reference users', 
notnull='True'),
                          Field('post_id', 'reference posts', 
notnull='True'),
                          Field('unique_key', unique=True, compute= lambda 
row: "%(user_id)s-%(post_id)s" %row)
)


This worked for me in web2py but not in GAE (by the way I don't know if I 
should add ,'string', after 'unique_key'. Anyway I have tried to add it 
with same luck).

I could check manually if 'unique_key' is already in DB before inserting as 
Massimo suggested in the other thread, but I prefer not adding more code (I 
have several unique fields that I would like to fix with a simple 
solution). What am I doing wrong? 

Thanks in advance


El viernes, 24 de septiembre de 2010 06:50:01 UTC+2, mdipierro escribió:
>
> yes and no. It will not be enforced at the database level but if you 
> do not specify validators, it will use it to pick default validator 
> that enforce the uniqueness at the web2py level 
>
> On Sep 23, 11:17 am, Carl <[email protected]> wrote: 
> > My db.py includes... 
> > 
> > db.define_table('voucher', 
> >     Field('code', 'string', length=128, unique=True, notnull=True, 
> > required=True), 
> >     .... 
> > 
> > Locally on sqlite when I insert a second record with the same 'code' 
> > as an existing record insert() throws an except. I catch the exception 
> > and report back to the user. 
> > 
> > Locally on dev_appserver the "duplicate" insert() successfully inserts 
> > a duplicate record; no exception is thrown. 
> > 
> > I've looked at the 2nd edition book and this group but can't find 
> > anything that say that GAE doesn't support unqiue=True. 
> > 
> > Can anyone clarify this use of unique=True on GAE? 
> > And if it's not supported is there a recommended alternative approach?

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