try:
    db.test.insert(...)
except IntegrityError:
    [return friendly error message]

Of course, if the inserts are done via form submission, you should instead 
add an IS_NOT_IN_DB validator, in which case, it will automatically check 
for duplicates and return the appropriate error message. Even if not using 
a form, you can make use of the validator by using the 
.validate_and_insert() method.

Anthony

On Thursday, January 9, 2014 2:31:00 AM UTC-5, software.ted wrote:
>
> Hi, 
>
> I am trying to find out the best way to catch errors generated by 
> web2py especially those genereted by say DAL. Say forinstance if I 
> have a table: 
>
> db.define_table('test', Field('xyz', 'integer', unique=True) 
>
> If i insert a dublicate field will get the exception and ticket: 
>
> IntegrityError: (1062, u"Duplicate entry 'X' for key 'xyz'") 
>
> Now i want to catch such an error and send a better message to a user, 
> not the ticket etc. 
>
> Any ideas? 
>
> -- 
> .......................................................................................
>  
>
> Teddy Lubasi Nyambe 
> Opensource Zambia 
> Lusaka, ZAMBIA 
>
> Cell: +260 97 7760473 
> website: http://www.opensource.org.zm 
>
> ~/ 
> Human Knowledge belongs to the world! - AntiTrust 
>
> Man is a tool-using animal. Without tools he is nothing, with tools he 
> is all - Thomas Carlyle 1795-1881 
>
> /~ 
>

-- 
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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