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Nested message with repeated field not in to_json when mutated after initialization

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3/5
预计耗时
1-2 天
新手友好度
38/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
停滞
技术栈
python

调研方向

首先,针对 betterproto 2.0.0b6 运行 issue 中嵌套消息的复现,并检查 include_default_values=False 的 to_dict 路径。当已修改的嵌套 repeated 字段出现在返回的 dict 中,同时未更改的默认字段仍被省略时,即可视为完成;如果确定了 repository 中测试的位置,则为这两种情况添加回归覆盖。

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描述

bug investigation needed
Summary

Possibly related to #199

Given a message with a nested message field containing a repeated field, if the field is mutated (eg. via list.append) after initialization, to_dict will not include it.

Reproduction Steps

Given a proto schema like this

syntax = "proto3";

message RootMessage {
  NestedMessage nested = 1;
}

message NestedMessage {
  repeated string content = 1;
}

Running the following script

message = RootMessage()

message.nested.content.append("test-content")

print("Including default values: True")
pprint(message.to_dict(include_default_values=True))

print("Including default values: False")
pprint(message.to_dict(include_default_values=False))

will result in:

Including default values: True
{'nested': {'content': ['test-content']}}

Including default values: False
{}
Expected Results

I would expect the content field of the nested message to appear in the returned dict also when include_default_values is set to False, as its content was mutated and it's no longer the default value.

Actual Results

to_dict returns an empty dict

System Information
libprotoc 3.21.6
Python 3.10.13
Name: betterproto
Version: 2.0.0b6
Summary: A better Protobuf / gRPC generator & library
Home-page: https://github.com/danielgtaylor/python-betterproto
Author: Daniel G. Taylor
Author-email: [email protected]
License: MIT
Location: /home/marco/.local/share/rtx/installs/python/3.10.13/lib/python3.10/site-packages
Requires: grpclib, python-dateutil
Required-by: 
Checklist
  • I have searched the issues for duplicates.
  • I have shown the entire traceback, if possible.
  • I have verified this issue occurs on the latest prelease of betterproto which can be installed using pip install -U --pre betterproto, if possible.
主要语言
Python
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环境准备

从这里开始

  1. 先读完整个 Issue,再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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