In the end I gave up trying to pass in options during controler runs.
Instead I pass in a function when the GrowingTableFieldSet (LineForm)
is set up, and this works fine for my case:
def get_topts():
return DBSession.query(Ltype.id, Ltype.name)
class LineForm(dynforms.GrowingTableFieldSet):
class children(core.WidgetsList):
amount = forms.TextField(validator=forms.validators.Number)
etype = forms.SingleSelectField(options=get_topts)
class EntryForm(dynforms.CustomisedForm, forms.TableForm):
...
On Aug 2, 10:00 am, Alex King <[email protected]> wrote:
> On Aug 2, 12:14 am, "Diez B. Roggisch" <[email protected]> wrote:
>
>
>
> > Alex King schrieb:
>
> > > Following the instructions at
> > >http://www.turbogears.org/2.0/docs/main/ToscaWidgets/forms.html#loadi...,
> > > I have my form loading options from the DB. Great.
>
> > > Now I want to have a master/detail form (using tw.dynforms) where each
> > > line has a field which needs to load options from the DB.
>
> > > eg, in controller:
>
> > > class LineForm(dynforms.GrowingTableFieldSet):
> > > class children(core.WidgetsList):
> > > amount = forms.TextField(validator=forms.validators.Number)
> > > etype = forms.SingleSelectField()
>
> > > class EntryForm(dynforms.CustomisedForm, forms.TableForm):
> > > action = 'save_entry'
> > > class children(core.WidgetsList):
> > > date = forms.CalendarDatePicker()
> > > description = forms.TextField()
> > > elines = LineForm()
> > > etype = forms.SingleSelectField()
>
> > > I successfully pass options to the etype selector in my EntryForm
> > > instance from the template:
>
> > > ${entryform(child_args=dict(etype=dict(options=topts)))}
>
> > > but I can't find how to pass the same options to the etype selector in
> > > the LineForm instance...
>
> > > Can anyone point me in the right direction?
>
> > You need to pass child_args to the elines that contain child_args
> > themselves.
>
> > I'm not 100% sure because of the GrowingTableFieldSet, but it's either
> > directly a dict, or a list with a dict with one entry per row.
>
> > So either this
>
> > entryform.display(child_args=dict(...,
> > elines=dict(child_args=dict(etype=dict(...)))
> > )
>
> > or this:
>
> > entryform.display(child_args=dict(...,
> > elines=[dict(child_args=dict(etype=dict(...)), ...])
> > )
>
> > I presume the latter.
>
> > Diez
>
> Hmm,
>
> The first results in no error, but the options are not loaded, and the
> second a traceback. (Post traceback didn't seem to work.) The
> traceback ends with:
>
> Module tw.core.util:211 in unflatten_args>> for key, val in v.iteritems():
>
> AttributeError: 'list' object has no attribute 'iteritems'
>
> So it looks like it doesn't like a list there. I guess I need to dig
> in to the tw.dynforms code. I may try to see if I can build by own
> repeating widget using standard wt.forms to try to understand this
> better.
>
> Thanks,
> Alex
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