I'm wondering just the same. How can this be done in model?.
Particularly I want to use IS_IN_DB on a referenced field based on a query
filtering by the value of another field of the table.
I've tried this but didn't work:
db.table1.field1.requires = lambda x,row: IS_IN_DB(db(db.table2.field2==row.
field2)), 'table2.id')
Nor did this one:
db.table1.field1.requires = IS_IN_DB(db(db.table2.field2==db.table1.field2
)), 'table2.id')
where field1 is field of table1:
Field('field1', 'reference table2')
Regards.
El lunes, 16 de septiembre de 2013, 8:49:08 (UTC+2), Hadi Sunyoto escribió:
>
> from:
> http://www.web2py.com/books/default/chapter/29/07/forms-and-validators#Database-validators
>
> <http://www.google.com/url?q=http%3A%2F%2Fwww.web2py.com%2Fbooks%2Fdefault%2Fchapter%2F29%2F07%2Fforms-and-validators%23Database-validators&sa=D&sntz=1&usg=AFQjCNE4_4fAPTYEpCZJVvLy1ejv7Tcocw>
>
> Validators with dependencies
>
> Usually validators are set once for all in models.
>
> Occasionally, you need to validate a field and the validator depends on
> the value of another field. This can be done in various ways. It can be
> done in the model or in the controller.
>
>
>
> There is an example validation done in controller but there is no example
> validation done in model
>
> My table:
>
> db.define_table('config',
> Field('config_name', 'string', length=255, required=True, unique=True),
> Field('convert_option', 'string', length=255,
> requires=IS_IN_SET(CONVERSION, zero=None)),
> Field('config_value', 'string', length=255, required=True),
> Field('default_value', 'string', length=255, required=True))
>
> I want to validate if config_value is greater than default value (for
> example), but i don't want to do it in SQLFORM or FORM.
>
> or is it a bad idea to put validation that depend on other fields in
> "model" rather than form?
>
> Thank you
>
> Hadi
>
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