[SOLVED] Ordering results of eager-loaded nested models in Node Sequelize

Ordering results of eager-loaded nested models in Node Sequelize

I have a complex set of associated models. The models are associated using join tables, each with an attribute called 'order'. I need to be able to query the parent model 'Page' and include the associated models, and sort those associations by the field 'order'.

The following is having no effect on the results' sort order:

db.Page.findAll({
  include: [{
    model: db.Gallery,
    order: ['order', 'DESC'],
    include: [{
      model: db.Artwork,
      order: ['order', 'DESC']
    }]
  }],
})

Solution

I believe you can do:

db.Page.findAll({
  include: [{
    model: db.Gallery
    include: [{
      model: db.Artwork
    }]
  }],
  order: [
    // sort by the 'order' column in Gallery model, in descending order.

    [ db.Gallery, 'order', 'DESC' ], 


    // then sort by the 'order' column in the nested Artwork model in a descending order.
    // you need to specify the nested model's parent first.
    // in this case, the parent model is Gallery, and the nested model is Artwork

    [ db.Gallery, db.ArtWork, 'order', 'DESC' ]
  ]
})

There are also a bunch of different ways, or things you can do when ordering. Read more here: https://sequelize.org/master/manual/model-querying-basics.html#ordering-and-grouping