How to use inner joins in sequilize - mysql

Question

SELECT v.vehicle_id,v.vehicle_model_id,u.user_id,u.first_name FROM user u INNER JOIN user_vehicle v ON u.user_id= v.user_id WHERE u.user_id=3
For the above query i use the following command
userModel.find({ where: {user_id: 3}, include: [userVehicleModel] }).success(function(user){
console.log(user)
})
It gives error:Possibly unhandled Error: user_vehicle is not associated to user!
Thanks in advance.

Answer 1

There's a good answer here.
Simple working solution:
'use strict';
var Sequelize = require('sequelize');
var sequelize = new Sequelize(/*database*/'test', /*username*/'test', /*password*/'test',
{host: 'localhost', dialect: 'postgres'});
var User = sequelize.define('User', {
firstName: {type: Sequelize.STRING},
lastName: {type: Sequelize.STRING}
});
var Vehicle = sequelize.define('Vehicle', {
brand: {type: Sequelize.STRING}
});
var firstUser;
User.hasMany(Vehicle, {constraints: true});
Vehicle.belongsTo(User, {constraints: true});
sequelize.sync({force: true})
.then(function () {
return User.create({firstName: 'Test', lastName: 'Testerson'});
})
.then(function (author1) {
firstUser = author1;
return Vehicle.create({UserId: firstUser.id, brand: 'Ford'});
})
.then(function () {
return Vehicle.create({UserId: firstUser.id, brand: 'Toyota'})
})
.then(function () {
return User.findAll({
where: {id: 1},
include: [Vehicle]
});
})
.then(function displayResults(results) {
results.forEach(function (c) {
console.dir(c.toJSON());
});
})
.then(function () {
process.exit(0);
});

Answer 2

For one to many associations in sequilize and to get record you just need to write this query.
let getuserId = req.query.user_id;
let foundUser await userModel.findOne({
where: {user_id: getuserId },
include: [ { model: userVehicleModel } ] })
});
if (foundUser) console.log(foundUser);