Cannot read property 'create' of undefined in expressjs - node.js

Question

Please am new to Nodejs but am trying to insert a data into my database using sequelize but am getting Cannot read property .create of undefined.
This is my index.js file
const fs = require('fs')
const path = require('path')
const Sequelize = require('sequelize')
const config = require('../config/config')
const db = {}
const sequelize = new Sequelize(
config.DB,
config.USER,
config.PASSWORD,
{
host: config.HOST,
dialect: config.dialect,
operatorsAliases: false,
pool: {
max: config.pool.max,
min: config.pool.min,
acquire: config.pool.acquire,
idle: config.pool.idle
}
});
fs
.readdirSync(__dirname)
.filter((file) =>
file !== 'index.js'
)
.forEach((file) => {
const model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes)
// db[model] = model
db.User = model
})
db.sequelize = sequelize
db.Sequelize = Sequelize
module.exports = db;
This is my Model/User.js File
module.exports = (sequelize, DataTypes) => {
sequelize.define('User', {
hmtec_email: {
type: DataTypes.STRING,
unique: true
},
hmtec_password: DataTypes.STRING
})
This is my Controllers/AuthController.js File
const {User} = require ('../models/User')
module.exports = {
async register (req, res) {
try {
const user = await User.create(req.body)
res.send(user.toJSON())
} catch (err) {
console.log(err);
res.status(400).send({
error: 'Email already in Use'
})
}
}
I don't know what wrong with the code, I dont know why am getting that error of .create is undefined

Answer 1

I think your problem is in the last file .. AuthController.js
const {User} = require ('../models/User')
You are using the Es6 new destruction assignment
More Info here https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment
Normally you should define your variable without the brackets
That mean you got all of the variable available.
But adding the brackets means that you want to get the child of the object, this child is named user .. and then name the variable also as user
and search these info
From the require file after the equal.
But in your user file .. you are exporting a function .. that does not have any child named user
Thus undefined
Better alternative is to use Classes
More info here : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes
So in user model
// Inside your function you need to use sequalize module , iam not familar with it but you must require it to use it
const Sequelize = require('sequelize');
// Define the Class
class user {
// add the name you want to use for the function - here I used create so the other code also work - also I inserted async because this is asynchronous and also I removed the sequalize from parameters because you don't need it now after it is required above.
async create (DataTypes) => {
await Sequelize.define('User', {
hmtec_email: {
type: DataTypes.STRING,
unique: true
},
hmtec_password: DataTypes.STRING
})
}
module.exports = user;
Now when you require the file in Authcontroller , remove the brackets
const User = require ('../models/User')
and now you can use User.create(YOUR_DATA_VARIABLE);in your authController.js
and if there is any other functions inside this class you also can use them in the same manner.
I hope this fix your problem.