cannot reference db.auth_group in model ?

[António Ramos]

Hello all i have a problem relating a record to auth_group records

creating in admin a new record in table menus, referencing one or more auth_group record results in a record with None in visibleTo field. 

Why ?

db.define_table("apps",

    Field("title"),

    Field("icon"),

    Field("bg"),

    Field("url"),

    format='%(title)s'

    )

db.define_table('menus',

            Field("visibleTo",'reference auth_group'),

            Field("app",'reference apps'),

            Field('content','list:string'),

            Field('icon'),

            Field('href'),

            Field('indice')

)

db.menus.visibleTo.requires=IS_IN_DB(db,db.auth_group.id,'%(role)s',multiple=True)

            Field('href'),

            Field('indice')

)

[António Ramos]

correct model

db.define_table("apps",

    Field("title"),

    Field("icon"),

    Field("bg"),

    Field("url"),

    format='%(title)s'

    )

db.define_table('menus',

            Field("visibleTo",'reference auth_group'),

            Field("app",'reference apps'),

            Field('content','list:string'),

            Field('icon'),

            Field('href'),

            Field('indice')

)

db.menus.visibleTo.requires=IS_IN_DB(db,db.auth_group.id,'%(role)s',multiple=True)

[António Ramos]

any help ?

thank you

[António Ramos]

problem solved.

Forgot to add "list:reference auth_group"

regards

António