每服务器前缀 [英] Per server prefixs

问题描述

我想知道如何允许我的机器人连接到的每个服务器设置自己的前缀。我在Commands ext中使用dpy的异步版本。
我假设您会将前缀和服务器名称存储在.json文件中，但我不知道如何编写或检查它们。

I was wondering how I would go about allowing every server my bot is connected to, to set their own prefix. I am using the async version of dpy with Commands ext. I would assume you would store the prefix's and server name in a .json file, but I don't know how you would write them or check the file for them.

谢谢

推荐答案

您可以使用动态命令前缀来实现。编写一个函数或协程，使其接受 Bot 和 Message 并输出该消息的适当前缀。假设您具有服务器ID的JSON前缀：

You can do this with dynamic command prefixes. Write a function or coroutine that takes a Bot and a Message and outputs the appropriate prefix for that message. Assuming you had a JSON of server ids to prefixes:

{ 
  "1234": "!",
  "5678": "?"
}

您可以将该json加载到字典中，然后在其中查找服务器ID字典。在下面，我还提供了一个默认前缀，但是您也可以为没有特定前缀的服务器引发 CommandError 或其他内容。

You can load that json into a dictionary and then look up server ids in that dictionary. Below I also include a default prefix, but you could also raise a CommandError or something for servers with no specific prefix.

from discord import commands
import json

with open("prefixes.json") as f:
    prefixes = json.load(f)
default_prefix = "!"

def prefix(bot, message):
    id = message.server.id
    return prefixes.get(id, default_prefix)

bot = commands.Bot(command_prefix=prefix)

...

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