On Mon, Mar 19, 2012 at 11:41 AM, bolivar4 <[email protected]> wrote: > Want to present users a form in which numbers are entered, then manipulated > in a view and a calculated value is returned to the screen. > After looking in the the Django book around the net this is what I have > come, (it doesn't work) shows below. So far, the three fields setup in > forms.py render to the secreen, that is all I'm getting. > > > > I am getting this error in the django 404 exception page: "unsupported > operand type(s) for *: 'NoneType' and 'NoneType'" > > > It is purposely a simple exercise, more interested in technique of doing > this so, I know this can be done in javascript, but I want to do this with > python/django. > Thank you to anyone who can help me out, this has been a problem all > weekend. > > forms.py: > > from django import forms > > class FinanceTable(forms.Form): > capital = forms.IntegerField(required=False) > tax_rate = forms.DecimalField(required=False) > useage = forms.IntegerField(required=False) > > views.py: > > from django.shortcuts import render_to_response > > def calculation(request): > """view that sets up form calculation""" > if request.method == 'POST': > form = FinanceTable(request.POST) > if form.is_valid(): > capital = form.cleaned_data['capital'] > tax_rate = form.cleaned_data['tax_rate'] > useage = form.cleaned_data['capital'] * > form.cleaned_data['tax_rate'] > response_dict = {'capital' : capital, 'tax_rate' : > tax_rate, 'useage' : useage} > return render_to_response('focus_areas.html', > response_dict) > else: > form = FinanceTable( > initial={'capital' : 1000, tax_rate : .07} > ) > return render_to_response('focus_areas.html', {'form' : form}) > > > html in template: > <form action="" method= "" method="post"> > <table> > {{ form.as_table }} > </table> > <input type="submit" value = "Submit"/> > </form> > > > Any help ios much appreciated.
What does your urls.py file look like. If you are getting 404 then it may not be finding your view. -- Joel Goldstick -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
