validation.py 文件源码

def validate_size(value, max_size=20*1024*1024, error_messages=None):
    """ ????????? ???? ???????? """
    error_messages = error_messages or {}

    if max_size and value.size > max_size:
        raise ValidationError(
            error_messages.get(
                'too_big',
                _('Image must be no larger than %(limit)s')
            ) % {
                'current': filesizeformat(value.size),
                'limit': filesizeformat(max_size),
            },
            code='too_big',
        )