获取提及用户的角色

Question

为我的 Discord 机器人开发婚姻系统，但我很难找出用户已经拥有“已婚”角色。

    const Discord = require('discord.js');
module.exports = {
    name: "marry",
    aliases: ['m'],
    description: "marry someone",


    async run(client, message, args) {

        const user = message.mentions.users.first() || client.users.get(args[0]);
        let marriedRole = message.guild.roles.cache.find(r => r.name === "Married");
        let singleRole = message.guild.roles.cache.find(r => r.name === "Single");

        let proposerID = message.author.id;
        let proposerName = message.author.username;
        if (user.roles.cache.some(marriedRole)) {
            let embed = new Discord.MessageEmbed()
            .setDescription(`Sorry **${user.tag}**, is already married!`);
            let messageEmbed = await message.channel.send({ embeds: [embed] });
        }
        if (message.member.roles.cache.some(role => role.name === 'Single')) {
            let embed = new Discord.MessageEmbed()
            .setDescription(`**${user.username}**, **${message.author.username}** is asking for your hand in marriage, would you like to accept?`);
            let messageEmbed = await message.channel.send({ embeds: [embed] });
            messageEmbed.react('✅');
            messageEmbed.react('❌');
        }
        if (message.member.roles.cache.some(role => role.name === 'Married')) {
            let embed = new Discord.MessageEmbed()
            .setDescription(`Sorry **${message.author.username}**, but you are already married!`);
            let messageEmbed = await message.channel.send({ embeds: [embed] });
        }

        }
}

我不断收到错误

if (user.roles.cache.some(marriedRole)) { ^

TypeError：无法读取未定义的属性（读取“缓存”）

Answer 1

通过使用message.mentions.users.first() ，您将获得一个不具有roles属性的User对象作为回报。 相反，您需要GuildMember对象。 要获得它，您所要做的就是将声明user变量的部分更改为：

const user = message.mentions.members.first() || client.users.get(args[0]);

Zsolt Meszaros 的回答因为，如果消息中没有提及message.mentions.members.first() ，请记住这一点。 client.users.get(args[0])也只会获得一个User对象，因此您可以使用它而不是使用它：

const user = message.guild.members.cache.get(args[0])