Oops. I overlooked that this is a list field. I changed the IS_LIST_OF in
trunk and now you can do:
db.
register.sample_name.requires=IS_LIST_OF((IS_ALPHANUMERIC(),IS_LENGTH(maxsize=6)))
On Wednesday, 8 January 2014 12:48:24 UTC-6, Anthony wrote:
>
> For a list:-type field, I think you can only use IS_IN_SET(...,
> multiple=True), IS_IN_DB(..., multiple=True), IS_NOT_EMPTY(), and
> IS_LIST_OF(), no?
>
> IS_LIST_OF() takes only a single additional validator, so to apply
> multiple validators using it, you would probably have to create a custom
> validator that applies multiple validators.
>
> Anthony
>
> On Wednesday, January 8, 2014 1:04:36 PM UTC-5, Massimo Di Pierro wrote:
>>
>> You simply need in the model or in the action before SQLFORM
>>
>> db. register.sample_name.requires=(IS_ALPHANUMERIC(),IS_LENGTH(maxsize=6))
>>
>>
>>
>> On Wednesday, 8 January 2014 07:44:15 UTC-6, curly wrote:
>>>
>>> Hello,
>>>
>>> I'm trying to validate a list:string field with is_alphanumeric and
>>> is_length - trying to ensure that names are no longer than 6 alphanumeric
>>> characters in length. (I'm running web2py 2.8.1 in ubuntu 12.04)
>>>
>>> view:
>>> <li>Sample name *: {{=form.custom.widget.sample_name}}</li>
>>>
>>> controller:
>>> form = SQLFORM(db.register,fields=[..,'sample_name',...])
>>>
>>> if form.validate(onvalidation=validate_sample_name):
>>> form.vars.id = db.register.insert(**dict(form.vars))
>>> response.flash = 'Reg saved.'
>>> redirect(URL('samples', 'default', 'index'))
>>> elif form.errors:
>>> response.flash = 'form has errors'
>>> return dict(form=form)
>>>
>>> model:
>>> db.define_table(
>>> "register",
>>> .....
>>> Field('sample_name','list:string'),
>>> )
>>>
>>> def validate_sample_name(form):
>>> for sample in form.vars.sample_name:
>>> out,ers = IS_ALPHANUMERIC()(sample) and
>>> IS_LENGTH(maxsize=6)('sample')
>>> if ers:
>>> form.errors.sample_name = ers
>>>
>>>
>>> The above does check for alphanumeric characters but doesn't seem to
>>> check for the length of each sample name.
>>>
>>> Am I doing something wrong?
>>>
>>> Many thanks.
>>>
>>>
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