Hi,
I am running into an annoying problem when trying to create formsets
dynamically.
I have a script that sends JSON data to a view to render it as a
formset. The response is then inserted in the page:
Script:
data = JSON.stringify([1, 2, 3]);
$("#container").load("render-form/", {data: data});
View:
def render_form(request):
data = simplejson.loads(request.POST["data"])
objs = [SomeModel(i) for i in data]
FormSet = modelformset_factory(SomeModel, extra=0)
forms = FormSet(queryset=objs)
return render_to_response("form_template.html", {"forms": forms})
It works but I get incorrect ManagementForm data in the output:
<input id="id_somemodel-TOTAL_FORMS" type="hidden" value="3"
name="attendee-TOTAL_FORMS"/>
<input id="id_somemodel-INITIAL_FORMS" type="hidden" value="3"
name="attendee-TOTAL_FORMS"/>
For django to save the formset correctly when it is submitted, I have to
manually set INITIAL_FORMS to 0 in javascript (because the objects are
not really in the database).
I tried to create the formset using extra=3 and passing the data via the
'initial' argument, but this gives an IndexError (django is trying to
set the forms 'instance' attribute from the queryset, but it is empty).
Is there a less hackish way to do this ?
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