Discord.js 和 Sequelize - 在另一个 .js 中引用数据库

Question

我会先说我是 Javascript 新手，我的大部分经验都是 C# 和 C++，但总的来说我还是有点生疏。我正在学习 Javascript 和 Discord js，尝试制作一个可以存储和列出恐龙统计数据的机器人，以便可以跟踪它们的繁殖情况，这些数据可以通过斜杠命令输入，也可以通过附件输入（如果可能）。 （《方舟：生存登高》发布时的个人小项目哈哈）

我正在关注 https://discordjs.guide/sequelize/#syncing-the-model ，它解释了将我的所有事件和命令移动到它们自己的单独的 .js 以保留我的主索引是一个很好的做法.js 更有组织性。所以我也跟着这么做了。然而，在使用 Sequelize 时，它在同一个 index.js 中演示了所有这些，而不是利用我现在为每个命令和事件设置的模块或其他 .js 文件。

如果我完全遵循并在同一个 index.js 中执行此操作，它就会起作用。但是，如果我尝试将其集成到其他 .js 中，它没有定义，并且我不确定需要包含或要求什么才能使其正常工作。

这是我的index.js

const fs = require('node:fs');
const Sequelize = require('sequelize');
const path = require('node:path');
const keep_alive = require("./keep_alive.js");

const { Client, Collection, Events, GatewayIntentBits, EmbedBuilder, PermissionsBitField, Permissions, SlashCommandBuilder} = require('discord.js');

const client = new Client({intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildMessages]});
client.cooldowns = new Collection();
client.commands = new Collection();

// Secret values
const token = process.env['token']
const CLIENT_ID = process.env['client_id']
const GUILD_ID = process.env['guild_id']

// Setting up database
const sequelize = new Sequelize('database', 'user', 'password', {
  host: 'localhost',
  dialect: 'sqlite',
  logging: false,
  // SQLite only
  storage: 'database.sqlite',
});

// Setting up tags in database
const Tags = sequelize.define('tags', {
  name: {
    type: Sequelize.STRING,
    unique: true,
  },
  ... (other tags) ...
});

// Reads the commands in the commands folder.
client.commands = new Collection();
const foldersPath = path.join(__dirname, 'commands');
const commandFolders = fs.readdirSync(foldersPath);

for (const folder of commandFolders) {
  const commandsPath = path.join(foldersPath, folder);
  const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));
  for (const file of commandFiles) {
    const filePath = path.join(commandsPath, file);
    const command = require(filePath);
    // Set a new item in the Collection with the key as the command name and the value as the exported module
    if ('data' in command && 'execute' in command) {
      client.commands.set(command.data.name, command);
    } else {
      console.log(`[WARNING] The command at ${filePath} is missing a required "data" or "execute" property.`);
    }
  }
}

// Reads the events in the events folder.
const eventsPath = path.join(__dirname, 'events');
const eventFiles = fs.readdirSync(eventsPath).filter(file => file.endsWith('.js'));

for (const file of eventFiles) {
  const filePath = path.join(eventsPath, file);
  const event = require(filePath);
  if (event.once) {

    Tags.sync(); //This should be inside the ready.js event, not called here.

    client.once(event.name, (...args) => event.execute(...args));
  } else {
    client.on(event.name, (...args) => event.execute(...args));
  }
}


client.login(token);

这是ready.js，当机器人准备好时应该只调用一次事件。

const { Client, Events, GatewayIntentBits } = require('discord.js');
//What am I missing??

module.exports = {
  name: Events.ClientReady,
  once: true,
  execute(client) {
    
    Tags.sync(); //This is causing an error. This should be inside the ready.js event, but it keeps saying Tags is not defined.
    
    console.log(`Ready! Logged in as ${client.user.tag}`);
  },
};

这是错误：

/home/runner/BreedBotjs/events/ready.js:10
    Tags.sync(); //This is causing an error. This should be inside the ready.js event, but it keeps saying Tags is undefined.
    ^

ReferenceError: Tags is not defined
    at Object.execute (/home/runner/BreedBotjs/events/ready.js:10:5)
    at Client.<anonymous> (/home/runner/BreedBotjs/index.js:93:48)
    at Object.onceWrapper (node:events:628:26)
    at Client.emit (node:events:513:28)
    at WebSocketManager.triggerClientReady (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketManager.js:388:17)
    at WebSocketManager.checkShardsReady (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketManager.js:371:10)
    at WebSocketShard.<anonymous> (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketManager.js:201:16)
    at WebSocketShard.emit (node:events:513:28)
    at WebSocketShard.checkReady (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketShard.js:181:12)
    at WebSocketShard.gotGuild (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketShard.js:155:10)

Node.js v18.16.1

我想我错过了一些非常简单的东西。某种导入或要求。

我尝试过做类似的事情 const { 标签 } = require('index.js');

但是我遇到了另一个错误：

/home/runner/BreedBotjs/events/ready.js:10
    this.Tags.sync(); //This is causing an error. This should be inside the ready.js event, but it keeps saying Tags is undefined.
              ^

TypeError: Cannot read properties of undefined (reading 'sync')
    at Object.execute (/home/runner/BreedBotjs/events/ready.js:10:15)
    at Client.<anonymous> (/home/runner/BreedBotjs/index.js:93:48)
    at Object.onceWrapper (node:events:628:26)
    at Client.emit (node:events:513:28)
    at WebSocketManager.triggerClientReady (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketManager.js:388:17)
    at WebSocketManager.checkShardsReady (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketManager.js:371:10)
    at WebSocketShard.<anonymous> (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketManager.js:201:16)
    at WebSocketShard.emit (node:events:513:28)
    at WebSocketShard.checkReady (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketShard.js:181:12)
    at WebSocketShard.gotGuild (/home/runner/BreedBotjs/node_modules/discord.js/src/client/websocket/WebSocketShard.js:155:10)

Node.js v18.16.1

Answer 1

您正在尝试在尚未声明或要求的其他文件中访问

Tags

。

您需要将其从您的

index.js

导出，以便您可以在其他文件中使用它。

有几种方法可以解决这个问题，例如将其添加到index.js中的

client.once

中：

client.once(event.name, (...args) => event.execute(...args, Tags));

// in ready.js add Tags to your execute()
module.exports = {
  name: Events.ClientReady,
  once: true,
  execute(client, Tags) {
    // rest of your code
  }

或将其添加到您的

client

：

// in your index.js
client.Tags = Tags;


// in your ready.js
const Tags = client.Tags;

或导出它：

// in index.js
module.exports = {
  Tags
}


// in ready.js
module.exports = {
  name: Events.ClientReady,
  once: true,
  execute(client) {

    const tagsData = require("path_to_your_index.js");
    const Tags = tagsData.Tags;
    
    Tags.sync();
    
    console.log(`Ready! Logged in as ${client.user.tag}`);
  },
};