I am try to create the following. I want to have one drop down menu. Depending on the option selected in the first drop down menu, options in second drop down menu will be displayed. The options in 2nd drop down menu is supposed by dynamic, i.e., options change with the change of values in first menu.
Here, instead of getting the drop down menus, I am getting the following
Choose your Option1:
Choose your Option2:
Note: I strictly don't want to use javascript.
home_form.py
class HomeForm(forms.Form):
def __init__(self, *args, **kwargs):
var_filter_con = kwargs.pop('filter_con', None)
super(HomeForm, self).__init__(*args, **kwargs)
if var_filter_con == '***':
var_empty_label = None
else:
var_empty_label = ' '
self.option2 = forms.ModelChoiceField(queryset = db_option2.objects.filter(option1_id = var_filter_con).order_by("name"),
empty_label = var_empty_label,
widget = forms.Select(attrs={"onChange":'this.form.submit();'})
)
self.option1 = forms.ModelChoiceField(queryset = db_option1.objects.all().order_by("name"),
empty_label=None,
widget=forms.Select(attrs={"onChange":'this.form.submit();'})
)
view.py
def option_view(request):
if request.method == 'POST':
form = HomeForm(request.POST)
if form.is_valid():
cd = form.cleaned_data
if cd.has_key('option1'):
f = HomeForm(filter_con = cd.get('option1'))
return render_to_response('homepage.html', {'home_form':f,}, context_instance=RequestContext(request))
return render_to_response('invalid_data.html', {'form':form,}, context_instance=RequestContext(request))
else:
f = HomeForm(filter_con = '***')
return render_to_response('homepage.html', {'home_form':f,}, context_instance=RequestContext(request))
homepage.html
<!DOCTYPE HTML>
<head>
<title>Nivaaran</title>
</head>
<body>
<form method="post" name = 'choose_opt' action="">
{% csrf_token %}
Choose your Option1:
{{ home_form.option1 }}
<br/>
Choose your Option2:
{{ home_form.option2 }}
</form>
</body>
