模型与 Sequelize 之间的关联如何？

Question

Hi guys can someone help to make the right associations between the models with Sequelize In my project, there are three types of product and each type got different attributes and similar attributes

Hi guys can someone help to make the right associations between the models with Sequelize? In my project, there are three types of product and each type got different attributes and similar attributes

Answer 1

You can find documentation for association in Sequelize here

In Product model

Product.associate = (models) => {
    Product.hasMany(models.Lyrics, {
      foreignKey: 'LyricsID', // FK name in Product
      sourceKey: 'id' // FK name in lyrics table
    });
    // here write same for other models (track, artwork)
    
    // for User relation where product belongs to User,
    Product.belongsTo(models.User, {
      foreignKey: { name: 'UserID', allowNull: false },
      targetKey: 'UserID', // PK name from user table
      allowNull: false
    });
};

In User model

User.associate = (models) => {
    User.hasMany(models.Product, {
      foreignKey: 'UserID',
      sourceKey: 'UserID'
    });
};