javascript Sequelize：模型和关联index.js文件

Posted 2021-05-03

"use strict";

const fs = require("fs");
const path = require("path");
const Sequelize = require("sequelize");
const basename = path.basename(__filename);
const config = require(`${process.cwd()}/config`);
const postgresqlConfig = config.postgresql; // TODO: Change this to actual postgres object path.
const db = {};

// Declare a sequelize variable
const sequelize = new Sequelize(postgresqlConfig.database, postgresqlConfig.username, postgresqlConfig.password, postgresqlConfig);

// Find models and add them to our database object.
fs.readdirSync(__dirname).filter(file => {
	return file === basename ? false : file.match(/(\.js)$/);
}).forEach(file => {
	const model = sequelize.import(path.join(__dirname, file));

	db[model.name] = model;
});

// Associate keys of model
Object.keys(db).forEach(modelName => {
	if (db[modelName].associate) {
		db[modelName].associate(db);
	}
});

// Save instances
db.sequelize = sequelize;

module.exports = db;