'Auxiliary setter for name=value with support repeated parameter names'

def add_form_field(self, form_field):

    form_fields = self.meta.setdefault(form_field.name, [])
    form_fields.append(form_field)
    form_values = self.setdefault(form_field.name, [])
    form_values.append((form_field.value or ''))
