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Sequelize: Include.where filtering by a 'parent' Model attribute

I have two Models related, Catalog and ProductCategory. The latter has a composed PK, 'id, language_id'. Here are the models simplified:

var Catalog = sequelize.define("Catalog", { id: {   type: DataTypes.INTEGER,   primaryKey: true,   autoIncrement: true }, user_id: {   type: DataTypes.INTEGER,   allowNull: false }, product_category_id: {   type: DataTypes.STRING(7) }, language_id: {   type: DataTypes.INTEGER },   ... more stuff ... }  var ProductCategory = sequelize.define("ProductCategory", { id: {   type: DataTypes.STRING(7),   primaryKey: true }, language_id: {   type: DataTypes.INTEGER,   primaryKey: true }, ... more stuff ... }  Catalog.belongsTo(models.ProductCategory, {foreignKey: 'product_category_id'}); 

I'm trying to include some info from ProductCategory table related to Catalog, but ONLY when the language_id matches.

At the moment I'm getting all the possible matches from both tables. This is the query right now:

Catalog.find({where:     {id: itemId},     include: {         model: models.ProductCategory,          where: {language_id: /* Catalog.language_id */}     } }) 

Is there a way to use an attribute from Catalog to filter the include where both models have the same language?

By the way, I've also tried changing the where clause, without any consecuence:

where: {'ProductCategory.language_id': 'Catalog.language_id'} 
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Sandokan El Cojo Avatar asked May 05 '15 11:05

Sandokan El Cojo


1 Answers

Sequelize provides an extra operator $col for this case so you don't have to use sequelize.literal('...') (which is more a hack).

In your example the usage would look like this:

Catalog.find({where:     {id: itemId},     include: {         model: models.ProductCategory,          where: {           language_id: {$col: 'Catalog.language_id'}         }     } }) 
like image 148
Frederik Kammer Avatar answered Sep 20 '22 09:09

Frederik Kammer