Create Association in Sequelize - node.js

Question

I am using "sequelize": "^5.8.6" and have created my project structure using "sequelize-cli": "^5.4.0". I would like to create associations so that:
One company has many ratings
I have created a company model, which looks like that:
'use strict';
module.exports = (sequelize, DataTypes) => {
const Company = sequelize.define('Company', {
name: DataTypes.STRING,
symbol: DataTypes.STRING,
}, {});
Company.associate = function(models) {
Company.hasMany(models.Rating);
};
return Company;
};
My Rating model looks like that:
'use strict';
module.exports = (sequelize, DataTypes) => {
const Rating = sequelize.define('Rating', {
action: DataTypes.STRING,
}, {});
Rating.associate = function(models) {
Rating.belongsTo(models.Company);
// associations can be defined here
};
return Rating;
};
My Company Migration look like the following:
'use strict';
module.exports = {
up: (queryInterface, Sequelize) => {
return queryInterface.createTable('Companies', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: Sequelize.INTEGER
},
name: {
type: Sequelize.STRING
},
symbol: {
type: Sequelize.STRING
},
createdAt: {
allowNull: false,
type: Sequelize.DATE
},
updatedAt: {
allowNull: false,
type: Sequelize.DATE
}
});
},
down: (queryInterface, Sequelize) => {
return queryInterface.dropTable('Companies');
}
};
My Rating migration looks like the following:
'use strict';
module.exports = {
up: (queryInterface, Sequelize) => {
return queryInterface.createTable('Ratings', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: Sequelize.INTEGER
},
companyid: {
type: Sequelize.INTEGER,
references: {
model: 'Company',
key: 'id',
},
onUpdate: 'CASCADE',
onDelete: 'SET NULL',
},
action: {
type: Sequelize.STRING
},
createdAt: {
allowNull: false,
type: Sequelize.DATE
},
updatedAt: {
allowNull: false,
type: Sequelize.DATE
}
});
},
down: (queryInterface, Sequelize) => {
return queryInterface.dropTable('Ratings');
}
};
When running, I get the following error:
> npx sequelize-cli db:migrate
ERROR: Can't create table `test_db`.`ratings` (errno: 150 "Foreign key constraint is incorrectly formed")
Any suggestions what I am doing wrong?
I appreciate your replies!

Answer 1

If you haven't just left it out of your code, your company model association should read:
Company.associate = function(models) {
Company.hasMany(models.Rating, {
foreignKey: 'companyid',
targetKey: 'id'
});
};
And your rating model should read:
Rating.associate = function(models) {
Rating.belongsTo(models.Company, {
// associations can be defined here
foreignKey: 'companyid',
targetKey: 'id'
});
};