不和谐的许可制度。py机器人

Question

我正在使用discord制作discord机器人。py和asyncio。bot有像kick和ban这样的命令，这显然不应该对普通用户可用。

我想制作一个简单的系统，它将使用ctx检测用户角色的权限。消息编写以获取发送命令的用户。

我不希望bot检测到特定的角色名称，因为这些名称在不同的服务器上有所不同。我也不希望机器人有多个文件来保持简单。

我看到了不和谐。py文档和各种其他来源，但没有一个包含如何实现他们所讨论的各种方法的示例。

举个例子，这里有一个来自我的机器人的命令：

async def kick(ctx, userName: discord.User):
    if True: #ctx.message.author.Permissions.administrator
        await BSL.kick(userName)
    else:
        permission_error = str('Sorry ' + ctx.message.author + ' you do not have permissions to do that!')
        await BSL.send_message(ctx.message.channel, permission_error)

其中，如果还有语句是我试图自己做这件事。#ctx.message.author.Permissions.administrator被注释掉，因为它不起作用，并被True替换为测试目的。

提前感谢您的帮助和建议。

Answer 1

找到公认答案的提示可能不起作用：

>

discord.py库的重写版本和预重写版本可能存在兼容性问题，这些版本保持不过时、不弃用且仍在使用。

bot还应该检查自己的权限，以排除错误的一个原因。

如果出现错误，或者bot本身的权限无效，bot应该说些什么，对吗？

需要实现一些东西来防止机器人试图在DM或组上下文中运行此命令。它几乎总是会出错。

我提出以下预重写的解决方案（假设您使用命令扩展）：

import discord
from discord.ext import commands
import time
@bot.command(pass_context=True,description="Kicks the given member. Please ensure both the bot and the command invoker have the permission 'Kick Members' before running this command.")
async def kick(ctx, target:discord.Member):
    """(GUILD ONLY) Boot someone outta the server. See 's!kick' for more."""
    if not str(ctx.message.channel).startswith("Direct Message with "):
        msg=await bot.say("Checking perms...")
        time.sleep(0.5)
        if ctx.message.server.me.server_permissions.kick_members:
            if ctx.message.author.server_permissions.kick_members:
                await bot.edit_message(msg,new_content="All permissions valid, checking issues with target...")
                time.sleep(0.5)
                if target==ctx.message.server.owner:
                    await bot.edit_message(msg, new_content="All permissions are correct, but you're attempting to kick the server owner, whom you can't kick no matter how hard you try. Whoops!")
                else:
                    if target==ctx.message.server.me:
                        await bot.edit_message(msg, new_content="Whoops! All permissions are corrent, but you just tried to make me kick myself, which is not possible. Perhaps you meant someone else, not poor me?")
                    else:
                        await bot.edit_message(msg, new_content="All permissions correct, and no issues with target being self or server owner, attempting to kick.")
                        time.sleep(2)
                        try:
                            await bot.kick(target)
                            await bot.edit_message(msg, ":boom: BAM! ***kicc'd***")
                        except Exception:
                            await bot.edit_message(msg, new_content="I was unable to kick the passed member. The member may have a higher role than me, I may have crashed into a rate-limit, or an unknown error may have occured. In that case, try again.")
            else:
                await bot.edit_message(msg, new_content="I've the correct permissions, {}, but you do not. Perhaps ask for them?").format(ctx.message.author.mention)
        else:
            await bot.edit_message(msg, new_content="I'm just a poor bot with no permissions. Could you kindly grant me the permission `Kick Members`? Thanks! :slight_smile:")
    else:
        await bot.say("'Tis a DM! This command is for servers only... try this again in a server maybe? :slight_smile:")

Answer 2

你也可以使用装饰器。

@bot.command(name = "Kick")
@bot.has_permissions(kick_user = True)
@bot.bot_has_permissions(kick_user = True)
async def _kick(ctx, member: Member):
    #Do stuff...

检查用户和bot权限的优势意味着更容易处理来自提供有用的“权限不足”错误消息的错误。

Answer 3

权限是类的名称。要获取消息作者权限，您应该访问作者的guild\u permissions属性。

if ctx.message.author.guild_permissions.administrator:
 # you could also use guild_permissions.kick_members

更新：

验证调用命令的人的权限的更好方法是使用命令扩展的检查功能，特别是has_permissions检查。例如，如果您想只向具有manage_roles权限或ban_members权限的人打开您的命令，您可以这样写您的命令：

from discord import Member
from discord.ext.commands import has_permissions, MissingPermissions

@bot.command(name="kick", pass_context=True)
@has_permissions(manage_roles=True, ban_members=True)
async def _kick(ctx, member: Member):
    await bot.kick(member)

@_kick.error
async def kick_error(ctx, error):
    if isinstance(error, MissingPermissions):
        text = "Sorry {}, you do not have permissions to do that!".format(ctx.message.author)
        await bot.send_message(ctx.message.channel, text)