添加到其他人服务器上的Discord Bot如何获取他们希望它发送消息的位置的通道id？

Question

我目前有一个不和谐机器人，在我自己的私人服务器上运行良好。我希望机器人能够加入其他人的服务器，如果他们选择添加它们，但是我的机器人的一个部分是它会每隔一段时间自动向特定的频道发送消息。为此，我使用了我在服务器上使用的通道的通道ID：

async def esportsdiscussions():
    await client.wait_until_ready()
    channel = client.get_channel([Channel Id])
    await channel.send('Hi!')

如果我的bot被添加到另一台服务器上，我的服务器的通道id显然无法工作，那么有没有办法从它所在的服务器上自动获取常规通道id？或者是否有其他方法为不同的服务器创建通道ID列表？

Answer 1

您可以使用on_guild_join事件获取该公会及其所有频道，也可以按id或名称查找公会，然后按id或名称查找频道

但是如果你想保存通道标识，即使在重启后，你也需要将它们保存到数据库或类似的东西中，你可以使用MongoDB（像我一样），或者如果它只是一个小程序JSON、SQLite或只是一个. txt也会起作用

我将使用python dict作为示例，它与JSON或MongoDB输出非常相似

database = {      # if this is in a .json file, only use everyting 
    "guilds": [   # behind "database = ", starting with the first { and the last }
        {
            "guild_id": 1111,     # you can already set this to your guild 
            "channel_id": 1112    # and channel id
        }
    ]
}


@bot.event
async def on_guild_join(guild):
    """
        You can try to find a channel with a specific name here and use this,
        but maybe the name does not exists, so i don't recommend this
    """
    # for example
    for channel in guild.text_channels:  
        if channel.name == "something":
            ...


@bot.command()
async def set_channel(ctx, channel: discord.TextChannel):
    """You can use a command so server admins kann set the channel by themself"""

    current_guild_ids = [guild["guild_id"] for guild in database["guild"]]
    if ctx.guild.id in current_guild_ids:  # check if the guild already exists in the db
        await ctx.send("You already set a channel")
    else:  # add the guild and channel to the db
        new_guild_data = {"guild_id": ctx.guild.id, "channel_id": channel.id}
        database["guilds"].append(new_guild_data)
        await ctx.send("Channel was added")


# and if you want to get the guild without a event or command you can do this:

async def some_function():
    guild_data = database["guilds"][0]  # the first guild in the db for example
    # prints: {"guild_id": 1111, "channel_id": 1112}
    guild = bot.get_guild(guild_data["guild_id"])
    channel = bot.get_channel(guild_data["channel_id"])
    # then you can send messages to it
    await channel.send("Hi!")


    # or find the by name with discord.utils.find()
    guild = discord.utils.find(lambda g: g.name == 'GuildName', client.guilds)
    channel = discord.utils.find(lambda c: c.name == 'ChannelName', guild.channels)

不和谐。乌提尔斯。查找文档