Discord.js 将特定角色添加到数组

Question

我正在开发一个为用户分配角色的 Discord 机器人。如果被 ping 的用户和执行命令的用户具有特定角色，我想将其添加到 const 中。

const role1 = message.guild.roles.cache.find(role => role.name === "role1")
const role2 = message.guild.roles.cache.find(role => role.name === "role2")
const role3 = message.guild.roles.cache.find(role => role.name === "role3")
const roles = [ role1, role2, role3 ]
        
let pingedUser = message.mentions.members.first();
        
const userRole = roles.filter(role => pingedUser.roles.cache.has(role.id))
const ownRole = roles.filter(role => message.member.roles.cache.has(role.id));

console.log(userRole);
console.log(ownRole);

我在控制台中收到此错误：“无法读取未定义的属性 'roles'”

如果有人有解决方案，我会很高兴:)

编辑： 这就是我执行命令的方式（index.js）：

client.on('message', message => {
    if (!message.content.startsWith(prefix) || message.author.bot) return;
    
    const args = message.content.slice(prefix.length).split(/ +/);
    const command = args.shift().toLowerCase();

    if (command === 'testcommand') {
        client.commands.get('testcommand').execute(message, args, Discord, client);
    } 
});

这是我的整个命令文件（commands/testcommand.js）：

module.exports = {
    name: 'testcommand',
    description: "",
    async execute(message, args, Discord, client) {    
        const role1 = message.guild.roles.cache.find(role => role.name === "role1")
        const role2 = message.guild.roles.cache.find(role => role.name === "role2")
        const role3 = message.guild.roles.cache.find(role => role.name === "role3")
        const roles = [ role1, role2, role3 ]
        
        let pingedUser = message.mentions.members.first();

        if (!pingedUser) {
            return
          }

        const userRole = roles.filter(role => pingedUser.roles.cache.has(role.id))
        const ownRole = roles.filter(role => message.member.roles.cache.has(role.id));

        console.log(userRole);
        console.log(ownRole);
    }
}   

Answer 1

GuildMemberRoleManager#cache 返回一个Collection<Snowflake, Role>，其中Snowflake (id) 是键，Role 是值。因此，您应该检查该集合是否具有 role.id 键。您可以使用Array.prototype.filter 简化您的代码。在计算他们的角色之前确保pingedUser 存在。

if (!pingedUser) {
  return message.reply('User mention missing')
}

const roles = [role1, role2, role3]
const userRoles = roles.filter(role => pingedUser.roles.cache.has(role.id))