I have a form with 2 select boxes that I load into a template.
Initially the "mailing country" choice is loaded with all available
countries and the "mailing states" is empty because a country hasn't
been selected yet. When a user selects a "mailing country" choice, I
want all the states from that country to populate in the "mailing
state" choice box. I know this is all possible with javascript on the
fly, but I would rather not code it that way. I have tried posting
the information back to the same page once the user changes the select
box, but if the user has any errors those are displayed too. Can I
somehow reload the page and keep the information that was previously
there, and then restrict the errors from being shown.
Here is my code:
---------------------
--FORMS.PY--
---------------------
class CustomerAdd(forms.Form):
....
mailing_country =
forms.ChoiceField(widget=forms.Select(attrs={'onChange':'country_change()'}),
choices=StaticCountries().GetListForSelect(), label=u'Mailing
Country', required=False)
mailing_state =
forms.ChoiceField(choices=StaticRegions().GetListForSelect(None),
label=u'Mailing State', required=False)
....
--------------------
--VIEWS.py---
---------------------
def customer_add_view(request):
if request.method == 'POST':
form = CustomerAdd(request.POST)
"""
if form.is_valid():
entry = form.save(commit=False)
entry.save()
return HttpResponseRedirect("/")
"""
else:
form = CustomerAdd()
t = loader.get_template('customer/new_customer.html')
c = Context({
'form': form,
'is_valid':form.is_valid()
})
return HttpResponse(t.render(c))
------------------------------
----TEMPLATE.PY---
------------------------------
<script language="javascript">
function country_change(){
document.forms[0].method = "get";
document.forms[0].submit();
}
</script>
<form action="." method="post">
{{test}}<br>
<table>
<tr>
<td>{{form.mailing_country.label}}</td><td>{{form.mailing_country}}</
td><td>{{form.mailing_country.errors}}</td>
</tr>
<tr>
<td>{{form.mailing_state.label}}</td><td>{{form.mailing_state}}</
td><td>{{form.mailing_state.errors}}</td>
</tr>
</table>
<input type="submit" value="Save" />
</form>
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