Just found out that this is an old bug:
http://code.google.com/p/web2py/issues/detail?id=382&q=list#makechanges
and the status is WontFix, but there is a solution inside the address above
On Monday, November 18, 2013 2:54:14 PM UTC+7, Hadi Sunyoto wrote:
>
> the table i have:, common_type and grade is just another table with only 1
> field
>
> db.define_table('coil_type',
> Field('common_type_id', 'reference common_type', label='Type'),
> Field('grade_id', 'reference grade', label='Grade'),
> Field('alternatives', 'list:reference coil_type'), <-- this is
> displayed as string input with +- after that
> Field('test1', 'list:reference common_type'), <-- this is displayed as
> multi select (which is correct)
> auth.signature)
>
> 1. alternatives field is displayed as string input with +- after that in
> appadmin
> 2. alternatives field does not check if the input is invalid. For example:
> i insert 1 coil_type, and then i edit, and insert number 3 in alternatives,
> it does not give error.
>
> my guess would be that somehow data in coil_type is not (yet) linked to
> list:reference so no data is found, hence the string input is used instead
> of multi select input
>
> Having list:reference should ease my development, so i would like to have
> a solution for this kind of problem, thank you
>
> Hadi
>
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