Because in request.vars just contains the POST variables and the HTTP
protocol cannot distinguish a single checkbox from a normal input. If you
look into form.vars.checkbox you find it is always a list. The form knows
this is a checkbox, the request objects does not.
On Tuesday, 2 October 2012 14:30:14 UTC-5, andrej burja wrote:
>
> hi
>
> i have SQLFORM with checkboxes (widget).
> if i choose one checkbox, type(request.varst.checkbox) is 'string'
> and if i choose more than one checkbox, tpye(request.vars.checkbox) is
> 'list'
> why choosing one checkbox does not return 'list'?
>
>
> form = SQLFORM.factory(Field('checkbox','list:string',label=T('Equipment'
> ),requires=IS_EMPTY_OR(IS_IN_SET(some_set,multiple=True)),
> widget=SQLFORM.widgets.checkboxes.
> widget)
>
> andrej
>
>
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