Mongoose discriminators in feathers-cli generated service.

media.model.js

// media-model.js - A mongoose model
//
// See http://mongoosejs.com/docs/models.html
// for more of what you can do here.
module.exports = function (app) {
  const mongooseClient = app.get('mongooseClient');
  const { Schema } = mongooseClient;

  const options = {
    discriminatorKey: 'type',
    timestamps: true

  }

  const Media = new Schema({
    name: {type: String, default: 'New Media File'},
    type: {type: String, enum: ['file', 'folder']},
    parent: {type: Schema.Types.ObjectId},
    uid: String,
  }, options);

  const Model = mongooseClient.model('media', Media);

  const MediaFile = Model.discriminator('file',
    new Schema({
      systemFilename: String,
      mimetype: {type: String},
      size: Number, // size in bytes
      meta: { type: Schema.Types.Mixed},
    }, options)
  );

  const MediaFolder = Model.discriminator('folder',
    new Schema({
      children: {type: [Schema.Types.ObjectId]},
    }, options)
  );



  return {Model, discriminators: [MediaFile, MediaFolder]};
};

media.service.js

// Initializes the `media` service on path `/media`
const createService = require('feathers-mongoose');
const createModel = require('../../models/media.model');
const hooks = require('./media.hooks');

module.exports = function (app) {
  const  {Model, discriminators} = createModel(app);
  const paginate = app.get('paginate');


  const options = {
    name: 'media',
    Model,
    paginate,
    discriminators
  };

  // Initialize our service with any options it requires
  app.use('/media', createService(options));

  // Get our initialized service so that we can register hooks and filters
  const service = app.service('media');

  service.hooks(hooks);
};