strategies.py 文件源码

def validate_form(cls, form, cleaned_data):
        parameter = cleaned_data.get('parameter', '')
        if not parameter:
            form.add_error('parameter', _('This field cannot be blank.'))
            return

        try:
            percentage = Decimal(parameter)
        except (TypeError, ValueError, InvalidOperation):
            form.add_error('parameter', _('Invalid value'))
            return

        if not percentage:
            form.add_error('parameter', _('Ensure this value is greater than 0'))
            return

        return cleaned_data