Also, if i wanted to extend SQLFORM.widgets.options.widget, how would
i go about doing that? Is it as simple as replacing:
class Units_Widget(object):
with:
class Units_Widget(SQLFORM.widgets.options.widget):
Thanks,
Avik
On Mar 27, 5:03 pm, Avik Basu <avikb...@gmail.com> wrote:
> I get the following error:
>
> TypeError: __init__() should return None, not 'function'
>
> I think the problem has to do with the following return statement in
> the constructor:
>
> return widget
>
> Avik
>
> On Mar 27, 11:57 am, "mr.freeze" <nat...@freezable.com> wrote:
>
>
>
> > Sorry, the constructor should be:
>
> > def __init__(*args,**kargs):
>
> > On Mar 27, 10:53 am, "mr.freeze" <nat...@freezable.com> wrote:
>
> > > You need to make your widget a class so you can pass args to it in the
> > > constructor:
>
> > > class Units_Widget(object):
> > > def __init__(**args):
> > > def widget(f,v):
> > > #build your widget
> > > #using args
> > > return widget
>
> > > db.ate.units.widget = Units_Widget(food_id)
>
> > > On Mar 27, 10:42 am, Avik Basu <avikb...@gmail.com> wrote:
>
> > > > So, for my example, I tried your suggestion. I defined a widget in
> > > > models/widgets.py:
>
> > > > def units_widget(field,value,food_id):
> > > > ...
>
> > > > and then in the controller, I set the widget with:
>
> > > > db.ate.units.widget = units_widget(food_id)
>
> > > > But here I am not passing field and value so I get an error. What
> > > > would be the proper way to call the widget constructor?
>
> > > > Avik
>
> > > > On Mar 27, 12:02 am, mdipierro <mdipie...@cs.depaul.edu> wrote:
>
> > > > > in the controller you can do
>
> > > > > db.table.field.widget = SomeWidgetConstructor(args)
>
> > > > > Not sure if this is what you are asking.
>
> > > > > On 26 Mar, 18:26, Avik Basu <avikb...@gmail.com> wrote:
>
> > > > > > Is there a way to pass arguments to a field's widget from the
> > > > > > controller? For example:
>
> > > > > > db.define_table("food", Field("name", "string'"))
>
> > > > > > db.define_table("units",
> > > > > > Field("food_id", db.food),
> > > > > > Field("name", "string")
> > > > > > )
>
> > > > > > db.define_table("ate",
> > > > > > Field("food_id", db.food),
> > > > > > Field("quantity", "double"),
> > > > > > Field("units", "string", widget=units_widget),
> > > > > > )
>
> > > > > > In an update form for "ate", I would like to create a dropdown box
> > > > > > of
> > > > > > units that are associated with a given food_id. I realize could not
> > > > > > be set in the db.py since the food id would be unknown in that
> > > > > > scope,
> > > > > > however the action in the controller would have access to the food
> > > > > > id,
> > > > > > but I would like to be able to pass that somehow to the widget.
>
> > > > > > Thanks,
> > > > > > Avik
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