Discord bot 侦听特定频道上的命令

问题描述

我的 discord 机器人中有一堆命令，我想要做的是让机器人仅在某些命令来自特定频道时才收听它们.

I have a bunch of commands in my discord bot and what I am trying to do is to make the bot listen to some commands ONLY if they come from a specific channel.

这是一个命令示例:

@bot.command(name='bitcoin',
                brief="Shows bitcoin price for nerds.")
async def bitcoin(pass_context=True):
    url = 'https://api.coindesk.com/v1/bpi/currentprice/BTC.json'
    response = requests.get(url)
    value = response.json()['bpi']['USD']['rate']
    await bot.send_message(discord.Object(id='<channel id is inserted here>'), "Bitcoin price is: " + value)
    # await bot.say("Bitcoin price is: " + value)

我可以在我想要的特定渠道中给出答案，但我希望机器人仅在特定渠道中触发命令时才回复，而不是在任何地方.

I can give the answer in a specific channel that I want, but I want the bot to only reply if the command is triggered in a specific channel, not everywhere.

我尝试了 if/else 与 if message.channel.id = 'id' 但它不起作用.

I tried a if/else with if message.channel.id = 'id' but it doesn't work.

推荐答案

你可以写一个 check 来装饰你的命令.下面我们使用我们的目标频道 ID 创建一个 check，然后用该检查装饰我们的命令.

You can write a check that you can use to decorate your command. Below we create a check using our target channel id, and then decorate our command with that check.

def in_channel(channel_id)
    def predicate(ctx):
        return ctx.message.channel.id == channel_id
    return commands.check(predicate)

@bot.command(name='bitcoin', brief="Shows bitcoin price for nerds.")
@is_channel('CHANNEL_ID')
async def bitcoin(pass_context=True):
    url = 'https://api.coindesk.com/v1/bpi/currentprice/BTC.json'
    response = requests.get(url)
    value = response.json()['bpi']['USD']['rate']
    await bot.send_message(discord.Object(id='<channel id is inserted here>'), "Bitcoin price is: " + value)
    # await bot.say("Bitcoin price is: " + value)

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