Question

Is there any options for form field so that any input shall be automatically converted to capital letter and trim from white spaces at the beginning and the end?

If there is not, what is the best practice in enforcing the options above?

Answer 1

You could just override the clean method.

class MyForm(forms.Form):
    def clean(self):
         return dict([(k, v.strip().upper()) for k, v in self.cleaned_data.items()])

Note that this will run /after/ individual field validation.

To prevent errors with dates

def clean(self):
     result = {}
     for k, v in self.cleaned_data.items():
         try:
             result[k] = v.strip().upper()
         except AttributeError:
             result[k] = v
     return result     

You could also check if the value is isinstance(value, basestring) and only operate on those.