Sequelize: <table> is not associated to <Table> - node.js

Question

I'm getting images is not associated to product! error while binding the association of the model.
ProductImages is associated to Product and ProductImages is associated to Images model. So, i need to render images property into products collection by assigning to it.
The model that i'm trying to bind is as below.
products.model.ts
const Product = SQLize.define('product', {
id: { type: DataTypes.INTEGER, autoIncrement: true, primaryKey: true }
product_title: { type: new DataTypes.STRING(255) },
vendor_id: { type: DataTypes.INTEGER }
});
Product.hasMany(ProductImages, {foreignKey: 'product_id', targetKey: 'id', as :'product_img_refs'})
export { Product };
product-images.model.ts
const ProductImages = SQLize.define('product_images', {
id: { type: DataTypes.INTEGER.UNSIGNED, autoIncrement: true, primaryKey: true, },
product_id: { type: DataTypes.INTEGER },
product_image_id: { type: DataTypes.INTEGER }
img_type_id: { type: DataTypes.INTEGER }
});
ProductImages.belongsTo(ImagesModel, {foreignKey: 'product_image_id', targetKey: 'id', as:'product_images' })
export {ProductImages}
images.model.ts:
const ImagesModel = SQLize.define('images', {
id: { type: DataTypes.INTEGER.UNSIGNED, autoIncrement: true, primaryKey: true, },
img_url: { type: DataTypes.STRING }
});
export { ImagesModel }
Below is the repository file on which i have performed the SQLize operation.
public async getProductData() {
var prodData = Product.findAll({
include: [
{ model: Vendor, as: 'vendor' },
{ model: ProductImages, as: 'product_img_refs' }
{ model: ImagesModel, as: 'product_images' }
]
});
return prodData;
}
=> Sample product_images table records.
=> Sample images table records.
=> DB Schema for more visualisation.
=> I have checked this answer but it is not relevant to my model as i have three models with different association.

Answer 1

Instead of both a hasMany and a belongsTo relationship, create a many-to-many relationship on Product to Images and also one from Images to Product.
You can extend the auto-generated table (with ProductId and ImageId columns) by passing the name of a model.
const ProductImages = SQLize.define('ProductImages', {
// ...
});
Product.belongsToMany(ImagesModel, { through: ProductImages });
ImagesModel.belongsToMany(Product, { through: ProductImages });
You can now do:
await Product.getImages();
await Images.getProducts();
Or use the include option while querying. There are examples in the documentation here. It'll be something like:
await Product.findAll({
include: ImagesModel,
});
// It will be nested as such:
// {
// fields from product
// Images: {
// fields from image
// ProductImages: {
// fields from the 'through' table
// }
// }
// }