See this previous post; it was a question I asked
https://groups.google.com/forum/#!searchin/web2py/checkboxes$20with$20is_in_set%7Csort:relevance/web2py/UtbNmh-DF30/XaEXUF6gCgAJ
what I appreciated from Jim Russell's reply is advice of storing the items
in a list. This option uses IS_IN_SET as opposed to IS_IN_DB; not sure if
that is an option for your project.
On Wednesday, August 30, 2017 at 5:52:36 PM UTC-7, Alex Glaros wrote:
>
> How to make check boxes appear? Below allows user to select multiple
> dropdown items only if they are contiguous. No checkboxes appear which
> would allow user to select non-contiguous items.
>
> def select_tables_to_pick_object_of_a_role():
> potential_role_types = db((db.ObjectType.object_type_table_name != None)
> & (db.ObjectType.object_type_table_name !=''))._select(db.ObjectType.
> object_type_table_name)
> limited_choices = (db.ObjectType.object_type_table_name.belongs(
> potential_role_types))
> form = SQLFORM.factory(
> Field('object_type_table_name', type='list:string', requires = IS_IN_DB(
> db(limited_choices), 'ObjectType.object_type_table_name',
> '%(object_type_table_name)s', multiple=True, zero = T('choose one')),
> widget=SQLFORM.widgets.multiple.widget))
> if form.process().accepted:
> response.flash = form.vars.object_type_table_name
>
>
> Thanks,
>
> Alex Glaros
>
--
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