无法读取未定义 'highest' 的属性

Question

我想检查提到角色的成员是否与机器人的位置相同或更高，但出现错误。

const member = message.mentions.users.first();
const reason = args.slice(1).join(' ') || 'No reason specified.'

if (member.roles.highest.position >= message.guild.client.roles.highest.position) return message.reply('I cannot moderate this user as their highest role is higher than mine or I have the same highest role position as them.')

错误：

TypeError: Cannot read properties of undefined (reading 'highest')

我是 discord.js v13 和 Node.js v16

Answer 1

重要的是要记住，在 Discord 中（以及因此 Discord.js），User 与 Member 绝对不同。 message.mentions.users.first(); returns 一个 User object，其中没有任何 属性 名为 roles.

您似乎想要 members property on message.mentions instead, which returns a Collection of GuildMember objects，每个 应该 有 roles 属性:

const member = message.mentions.members.first();
const reason = args.slice(1).join(' ') || 'No reason specified.'

if (member.roles.highest.position >= message.guild.client.roles.highest.position) return message.reply('I cannot moderate this user as their highest role is higher than mine or I have the same highest role position as them.')

Answer 2

您正在使用将 User 分配给 member，并且 message.guild.client returns 没有 .roles 的 Client 对象.使用 .mentions.members 和 .guild.me 代替

const member = message.mentions.members.first();
const reason = args.slice(1).join(' ') || 'No reason specified.'

if (member.roles.highest.position >= message.guild.me.roles.highest.position) return message.reply('...')

Answer 3

当您使用 message.guild.client 时，您会得到实例化公会的客户端，它没有 roles 属性。相反，您可以使用：

const member = message.mentions.members.first();
const botMember = message.guild.members.cache.get(client.user.id)
const reason = args.slice(1).join(' ') || 'No reason specified.'

if (member.roles.highest.position >= botMember.roles.highest.position) return message.reply('I cannot moderate this user as their highest role is higher than mine or I have the same highest role position as them.')