Sequelize - Mysql foreignKey ADD CONSTRAINT fails with ALTER TABLE - mysql

Question

I'm trying to create two tables with the following model of Sequelize:
const Sequelize = require('sequelize');
module.exports = function (db) {
const Product = db.define('product', {
intProductID: {
type: Sequelize.INTEGER(11),
primaryKey: true,
autoIncrement: true,
allowNull: false
},
strName: {
type: Sequelize.STRING
},
douPrice: {
type: Sequelize.DOUBLE
}
});
return Product;
}
const Sequelize = require('sequelize');
module.exports = function(db){
const User = db.define('user', {
intUserID:{
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true,
allowNull: false
},
strEmail:{
type:Sequelize.STRING
},
strPassword:{
type:Sequelize.STRING
},
strFirstName: {
type: Sequelize.STRING
},
strLastName: {
type: Sequelize.STRING
}
});
return User;
}
After adding these two models, I try to associate them with the follow code:
Product.belongsTo(
User,
{
foreignKey: {
name: 'intCreateUserID',
allowNull: false
},
foreignKeyConstraint: true
}
);
The first time this happens, it works well. But after one time, it tries to add the constraints several time. I'm continuously getting the following error:
SequelizeDatabaseError: Can't create table 'shop.#sql-4d23_2563b' (errno: 121)
code: 'ER_CANT_CREATE_TABLE',
errno: 1005,
sqlState: '#HY000',
sql: 'ALTER TABLE `products` ADD CONSTRAINT `products_intUpdateUserID_foreign_idx` FOREIGN KEY (`intUpdateUserID`) REFERENCES `users` (`intUserID`) ON DELETE NO ACTION ON UPDATE CASCADE;'
I tried to reproduce the error on mysql console and copy paste the query. I noticed that it fails because of the existing foreign key. It tries to re-add the constrain without removing it first. Is this a bug of Sequelize or is my definition of model wrong?
I'm syncing the tables with the follow code:
init.db.sync({ alter: true }).then(() => {
proceed();
}, (error) => {
console.log(error);
});

Answer 1

After updated to the latest version of Sequelize the problem was solved. People who are getting the same error could try to update the version.