Hello list,
Today I started using FormWizard and could not find a clean way to populate
a choices field based on previously submitted forms, I ended up overriding
the render method like this(The only changed line is the one highlited):
{{{
class CountryForm(forms.Form):
country = forms.ModelChoiceField(queryset=Country.objects.all())
class StaterForm(forms.Form):
state = forms.ChoiceField()
class LocationFormWizard(forms.Form):
def process_step(self, request, form, step):
if step == 0 and form.is_valid():
self.state_choices= states_from_country(form.data['0-country'])
def prepare_form(self, request, form, step):
if step == 1:
form.fields['state'].choices = self.state_choices
return form
def render(self, form, request, step, context=None):
"Renders the given Form object, returning an HttpResponse."
old_data = request.POST
prev_fields = []
form = self.prepare_form(request,form, step)
if old_data:
hidden = forms.HiddenInput()
# Collect all data from previous steps and render it as HTML
hidden fields.
for i in range(step):
old_form = self.get_form(i, old_data)
hash_name = 'hash_%s' % i
prev_fields.extend([bf.as_hidden() for bf in old_form])
prev_fields.append(hidden.render(hash_name,
old_data.get(hash_name, self.security_hash(request, old_form))))
return self.render_template(request, form, ''.join(prev_fields),
step, context)
}}}
Is there a hook missing to do what I needed or am I missing something?
Ariel
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