Allow server-side components to send messages to client-side components

未關閉
#975 4 則留言 0 個 reaction 已指派 0 人 在 GitHub 檢視

還沒有人認領這個 Issue。

評估

難度
5/5
預估耗時
一週以上
新手友好度
25/100
Issue 類型
功能
描述清晰度
需要釐清
活躍度
停滯
技術堆疊
javascript, python
領域
full-stack

研究方向

Start with the callback registration in src/client/packages/@reactpy/client/src/reactpy-vdom.tsx and trace the existing client-to-server event path. The issue still needs an agreed interface for targets or channels before implementation. Done means server-side components can deliver messages to the intended custom client-side component and the contract is documented and tested.

由索引模型根據 Issue 內容生成。

描述

priority-1-high release-minor
Current Situation

Presently, custom client-side components are able to send events back to the server. However, it is not possible to send events from server-side components to client-side ones.

Proposed Actions

Now that custom JS components have the ability to register callbacks with the client this should be technologically feasible. With that said, while users can listen in on particular message types, there is no concept of a message "target". We could achieve this by having message types of the form server-event:<the-target>, but this seems like a bit of a hack. Perhaps we can allow (require?) a nullable target field for this purpose.

Before diving into all those details though, we need to work out exactly what this interface should look like.

I can imagine having an interface similar to:

@component
def example():
    channel = use_channel()

    @use_effect
    async def delayed_message():
        import asyncio
        await asyncio.sleep(5)
        await channel.send({"my": "message"})
        response = await channel.receive()

    return custom_js_component({"channel_id": channel.id})

where custom_js_component would then subscribe to messages of the type channel-message and target channel.id.

主要語言
Python
星號
8.1k
分支
332
30 天內沒有已合併 PR

貢獻指南

這個儲存庫沒有索引到貢獻指南

從這裡開始

  1. 先讀完整個 Issue，再讀專案的貢獻指南。
  2. 在 Issue 下留言說明你要接手 —— 這能避免兩個人做同樣的事。
  3. Fork 儲存庫，在一個分支上完成修改。
  4. 送出 Pull Request，並在描述裡引用這個 Issue 編號。

reactive-python/reactpy 的其他 Issue

查看 reactive-python/reactpy 的全部 Issue

相似的 Issue

更多 Python Issue

把新 issue 寄到你的電子郵件信箱

精選適合新手參與的 GitHub issue 摘要。