I understand that there is no DEFAULT VALIDATOR for 'list:string', but it
seems that is not possible to use IS_LENGTH at all.
Ok, I have used onvalidation.
Another problem:
form = SQLFORM.factory(
Field("auswahl", "list:string"),
)
If there is only one item in "auswahl" then the type of form.vars.auswahl
is string.
If there is more than one item, the type is list.
This is annoying, because: if I want to know how many items are in the list
"auswahl" I cannot use len(form.vars.auswahl). I have to write something
like
len(form.vars.auswahl) if isinstance(form.vars.auswahl, list) else 1
Not very pythonic.
Or did I miss something?
2018-05-16 19:13 GMT+02:00 Kiran Subbaraman <subbaraman.ki...@gmail.com>:
> According to the documentation (http://www.web2py.com/books/
> default/chapter/29/06/the-database-abstraction-layer#Field-types),
> `list:string` does not have a validator. Maybe you can create your own?
>
>
> On 16-05-2018 22:26, Martin Weissenboeck wrote:
>
>
> That is ok:
> form = SQLFORM.factory(
> Field("auswahl", "string", length=15, requires=IS_LENGTH(15,3)),
> )
>
> This does not work:
> form = SQLFORM.factory(
> Field("auswahl", "list:string", length=15,
> requires=IS_LENGTH(15,3)),
> )
>
>
> ​Regards, Martin​
>
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