python - Django form_valid is not working -


i new django . can me code. trying calculate duration between 2 datefield save.

class employeecreate(createview):     model = employee     form_class = employeecreateform     success_url = "/employee-list/"      def form_valid(self, form):         self.object.total_leave = (self.object.to_date - self.object.from_date).days +1         self.object.save()         return httpresponseredirect(self.get_success_url())

there couple of issues

  1. you should use form.instance instead of self.object
  2. call super method

so update code as:

def form_valid(self, form):     self.instance.total_leave = (self.instance.to_date - self.instance.from_date).days +1     self.instance.save()     return super(employeecreate, self).form_valid(form)

refer docs form handling class-based views


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