TypeError:无法读取未定义的属性(读取“公会”)
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【中文标题】TypeError:无法读取未定义的属性(读取“公会”)【英文标题】:TypeError: Cannot read properties of undefined (reading 'guild') 【发布时间】:2021-11-13 15:07:09 【问题描述】:我想创建一个反应角色机器人但是这一行
const maths = message.guild.roles.cache.find(role => role.name === "Maths");
给我这个错误:TypeError: Cannot read properties of undefined (reading 'guild')
我该如何解决这个问题? 谢谢!
index.js:
const client = new Discord.Client( intents: ["GUILDS", "GUILD_MESSAGES"], partials: ["MESSAGE", "CHANNEL", "REACTION"] )
require("dotenv").config();
const prefix = "!";
const fs = require("fs");
client.commands = new Discord.Collection();
const commandFiles = fs.readdirSync("./commands/").filter(file => file.endsWith('.js'));
for (const file of commandFiles)
const command = require(`./commands/$file`);
client.commands.set(command.name, command);
client.on("ready", () =>
console.log("bot online");
);
client.on("message", message =>
if(!message.content.startsWith(prefix) || message.author.bot) return;
const args = message.content.slice(prefix.length).split(/ +/);
const command = args.shift().toLowerCase();
if (command === "reactionrole")
client.commands.get("reactionrole").execute(message. args, Discord, client);
);
client.login(process.env.BOT_TOKEN);
reactionrole.js:
name: 'reactionrole',
description: "Sets up a reaction role message",
async execute(message, args, Discord, client)
const channel = "889087325244629012";
const maths = message.guild.roles.cache.find(role => role.name === "Maths");
const mathsExpertes = message.guild.roles.cache.find(role => role.name === "Maths expertes");
const nsi = message.guild.roles.cache.find(role => role.name === "NSI");
const physique = message.guild.roles.cache.find(role => role.name === "Physique");
const svt = message.guild.roles.cache.find(role => role.name === "SVT");
const artsPlastique = message.guild.roles.cache.find(role => role.name === "Arts Plastiques");
const mathsEmoji = '????';
const mathsExpertesEmoji = '????';
const nsiEmoji = '????';
const physiqueEmoji = '????';
const svtEmoji = '????';
const artsPlastiquesEmoji = '????';
let embed = new Discord.MessageEmbed()
.setColor("#e42643")
.setTitle("Selection des matière")
setDescription("Choisis tes matières en cliquant sur la reaction qui correspond\n\n"
+ `$mathsEmoji : Maths\n`
+ `$mathsExpertesEmoji : Maths Expertes\n`
+ `$nsiEmoji : NSI\n`
+ `$physiqueEmoji : Physique\n`
+ `$svtEmoji : SVT\n`
+ `$artsPlastiquesEmoji : Arts Plastiques\n`);
let messageEmbed = await message.channel.send(embed);
messageEmbed.react(mathsEmoji);
messageEmbed.react(mathsExpertesEmoji);
messageEmbed.react(nsiEmoji);
messageEmbed.react(physiqueEmoji);
messageEmbed.react(svtEmoji);
messageEmbed.react(artsPlastiquesEmoji);
client.on("messageReactionAdd", async(reaction, user) =>
if (reaction.message.partial) await reaction.message.fetch();
if (reaction.partial) await reaction.fetch();
if (user.bot) return;
if (!reaction.message.guild) return;
if (reaction.message.channel.id == channel)
if (reaction.emoji.name === mathsEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.add(maths);
if (reaction.emoji.name === mathsExpertesEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.add(mathsExpertes);
if (reaction.emoji.name === nsiEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.add(nsi);
if (reaction.emoji.name === physiqueEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.add(physique);
if (reaction.emoji.name === svtEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.add(svt);
if (reaction.emoji.name === artsPlastiquesEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.add(artsPlastique);
else
return;
);
client.on("messageReactionRemove", async(reaction, user) =>
if (reaction.message.partial) await reaction.message.fetch();
if (reaction.partial) await reaction.fetch();
if (user.bot) return;
if (!reaction.message.guild) return;
if (reaction.message.channel.id == channel)
if (reaction.emoji.name === mathsEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.remove(maths);
if (reaction.emoji.name === mathsExpertesEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.remove(mathsExpertes);
if (reaction.emoji.name === nsiEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.remove(nsi);
if (reaction.emoji.name === physiqueEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.remove(physique);
if (reaction.emoji.name === svtEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.remove(svt);
if (reaction.emoji.name === artsPlastiquesEmoji)
await reaction.message.guild.members.cache.get(user.id).roles.remove(artsPlastique);
else
return;
);
【问题讨论】:
欢迎来到 ***,请用英文写下您的问题,以便更多人帮助您 我怎样才能改变它? 您的帖子下方有一个小按钮,上面写着“编辑” 谢谢我已经改了 【参考方案1】:您正在尝试访问未定义对象的属性。
如果你尝试这样做,你会得到一个错误。
const someObject = undefined
someObject.someProperty
对于这些类型的情况,你需要确保你的函数的参数是正确的。
看看这一行
client.commands.get("reactionrole").execute(message. args, Discord, client);
您使用的是.
而不是,
,因此您将 3 个变量传递给此函数:message.args
、Discord
、client
,但您必须传递 4 个变量:
client.commands.get("reactionrole").execute(message, args, Discord, client);
【讨论】:
【参考方案2】:message
在此上下文中似乎未定义,这意味着它不包含数据。似乎在您以反应角色调用函数的索引文件中,您使用句点而不是逗号来定义参数,导致未定义的值。
if (command === "reactionrole")
client.commands.get("reactionrole").execute(message, args, Discord, client);
// The error was here ^
// This was a period instead of a comma.
如果你是 JS 新手,我建议你使用像 ESLint 这样的 linter,它会在你的编辑器中向你指出这样的小错误。
【讨论】:
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