How to make sequelize model seperate file but same sequelize connection - node.js

Question

everyone. I'm very new for sequelize ORM with nodejs.
I've just created couple files for models seperately and I also seperate sequelize.js to connect to database.
The problem is when I make association between model(file)(Self Associate work well) and I've got an error
**** "hasMany called with something that's not a subclass of Sequelize.Model"
I tried to solved this but doesn't work until I put every model in the same file. So, I realized that every model must use common sequelize connection.
Is there anyways to solve this problem without sequelize-cli (I don't want to use sequelize-cli)
My code belows
Many thanks,
sequelize.js
const config = require("config");
const { Sequelize } = require("sequelize");
const sequelize = new Sequelize(
config.get("database"),
config.get("user"),
config.get("cipher"),
{
dialect: "mariadb",
timezone: "Asia/Bangkok",
}
);
module.exports = sequelize;
user.js
const { DataTypes, Model } = require("sequelize");
const sequelize = require("./sequelize");
const Position = require("./position");
class User extends Model {}
User.init(
{
uuid: {
type: DataTypes.UUID,
allowNull: false,
defaultValue: DataTypes.UUIDV4,
},
title: {
type: DataTypes.STRING,
allowNull: false,
},
firstname: {
type: DataTypes.STRING,
allowNull: false,
},
lastname: {
type: DataTypes.STRING,
allowNull: false,
},
phone: {
type: DataTypes.STRING,
allowNull: true,
},
email: {
type: DataTypes.STRING,
allowNull: true,
validate: {
isEmail: true,
},
},
imgurl: {
type: DataTypes.STRING,
allowNull: true,
},
login: {
type: DataTypes.STRING,
allowNull: false,
},
passphase: {
type: DataTypes.STRING,
allowNull: false,
},
status: {
type: DataTypes.INTEGER,
allowNull: false,
defaultValue: 1,
},
},
{
sequelize,
modelName: "User",
tableName: "users",
timestamps: true,
}
);
User.belongsToMany(User, {
as: "CreatedUser",
foreignKey: "user_id",
through: "UserCreator",
});
User.belongsToMany(User, {
as: "Creator",
foreignKey: "creator_id",
through: "UserCreator",
});
User.belongsToMany(User, {
as: "ModifiedUser",
foreignKey: "user_id",
through: "UserModifier",
});
User.belongsToMany(User, {
as: "Modifier",
foreignKey: "modifier_id",
through: "UserModifier",
});
User.belongsTo(Position);
module.exports = User;
position.js
const { DataTypes, Model } = require("sequelize");
const sequelize = require("./sequelize");
const User = require("./user");
class Position extends Model {}
Position.init(
{
uuid: {
type: DataTypes.UUID,
defaultValue: DataTypes.UUIDV4,
},
name: {
type: DataTypes.STRING,
allowNull: false,
},
status: {
type: DataTypes.INTEGER,
allowNull: false,
defaultValue: 1,
},
},
{
sequelize,
modelName: "Position",
tableName: "postions",
timestamps: true,
}
);
Position.hasMany(User, {
foreignKey: {
type: DataTypes.UUIDV4,
allowNull: false,
},
});
module.exports = Position;

Answer 1

Sequelize has a .define() method to create all your schemas in JSON. If you want to keep your connection to the database separate from your models, I suggest doing something like this
./models/schemas/User.js
const userSchema = {
attribute1: {
type: ...,
option1: ...,
option2: ...,
.
.
},
.
.
}
export default userSchema
Do the same with Position.js
Then:
./models/models.js
import {sequelize} from 'path/to/sequelize.js'
import positionSchema from './schemas/Position.js'
import userSchema from './schemas/User.js'
const User = sequelize.define("user", userSchema, { freezeTableName: true });
const Position = sequelize.define("position", positionSchema, { freezeTableName: true });
// add associations
export {
User,
Position,
.
.
}