问题描述

我的 discord 机器人中有一个头像命令.当用户使用 h.avatar 时，它会输出他们的头像，效果很好.每当他们尝试使用 h.avatar @user 时，什么都没有发生.
这是我的代码:

I have an avatar command in my discord bot. When the user uses h.avatar, it outputs their avatar, which works fine. Whenever they try to use h.avatar @user, nothing happens.
Here is my code:

 } if (message.content.startsWith(config.prefix + "avatar")) {
      if (!message.mentions.users.size) {
        const avatarAuthor = new Discord.RichEmbed()
      .setColor(0x333333)
      .setAuthor(message.author.username)
      .setImage(message.author.avatarURL)
        message.channel.send(avatarAuthor);
        let mention = message.mentions.members.first();
        const avatarMention = new Discord.RichEmbed()
        .setColor(0x333333)
        .setAuthor(mention.user.username)
        .setImage(mention.user.avatarURL)
        message.channel.send(avatarMention);

推荐答案

你有一个检查 if (!message.mentions.users.size) { 这使得命令只有在你不这样做的时候才会运行提到某人.您需要在代码中使用 else { 或执行以下操作:

You have a check if (!message.mentions.users.size) { which makes the command run only if you do not mention somebody. You either need to use an else { in your code or do:

 if (message.content.startsWith(config.prefix + 'avatar')) {
    const user = message.mentions.users.first() || message.author;
    const avatarEmbed = new Discord.RichEmbed()
        .setColor(0x333333)
        .setAuthor(user.username)
        .setImage(user.avatarURL);
    message.channel.send(avatarEmbed);
}

const user = message.mentions.users.first() ||message.author; 尝试获取提到的用户，但如果找不到任何人，它将使用作者使用的.

The const user = message.mentions.users.first() || message.author; tries to get the user that was mentioned but if it does not find anyone it will use the author's used.

也可以这样使用:

if (!message.mentions.users.size) {
    message.channel.send('Nobody was mentioned');
    return;
}
// continue command here, after guard clause