[Grok-dev] Re: how to hide a field in setUpWidgets

[Jan-Wijbrand Kolman]

Ivo van der Wijk wrote:
> def __init__(self, context, request):
>   super(...)(context, request)
>   if cond(self.request):
>     self.form_fields = grok.AutoFields(..).omit('special_field')
>   else:
>     self.form_fields = grok.AutoFields(..)
> 
> I'm still open to alternative suggestions (i.e. hiding the widget) but
> this will do the trick for now.

What about 1):

@property
def form_fields(self):
     fields = grok.AutoFields(..)
     if some_condition(self.request):
         fields = fields.oimt('special_field')
     return fields

or 2):

def update(self):
     self.form_fields = fields = grok.AutoFields(..)
     if some_condition(self.request):
         self.form_fields = fields.omit('special_field')

Would this work for you?

I generally follow one of these patterns for dynamically filling in the 
form_fields attribute on the form class. I'm still trying to find out 
what reasons I have for sometimes choosing 1) and sometimes opting for 
solution 2).



regards,
jw