Many-to-many association on the same model using Waterline & Sails.js

I am trying to create a many-to-many relationship on one model in Sail.js using Waterline. The model looks like this and is called "Disciplne" (ie Academic discipline):

module.exports = {

  attributes: {
    'name': {
        type: 'string',
        unique: true,
        required: true,
      lowercase: true
    },
    'users': {
        collection: 'user',
        via: 'discipline'
    },
    recommendations: {
        collection: 'recommendation',
        via: 'discipline'
    },
    related: {
        collection: 'discipline',
        via: 'related'  
    }
  }

};

      

        
        
        
      

    

Given here is the key related

with which I am trying to set up a many-to-many relationship that refers to other records in the model Discipline

. When I run this Sails.js a named connection table is automatically created discipline_related__discipline_related

which is as it should be I think. Then when I try to create a new discipline document with the corresponding ID, this is what happens.

First, I try to create a new discipline:

The identifier here refers to the existing discipline of "political science". The result, however, as you can see from the image, does not include the field related

. And if I then ask for the contents of this model, again the field related

does not appear:

The join table, however, is populated, but only contains one identifier reference, so there is not really a many-to-many relationship configured:

Does anyone know what I might be doing wrong here? Or does Waterline + Sails.js just not support this feature?