mongoose static/instance methods

stream.js

/************ CLASS METHODS ***********************/

//  TODO: Document use of promise here
StreamSchema.static('findActivities', function (streamId, callback) {
  var promise = new mongoose.Promise;
  if (callback) promise.addBack(callback);
  require('./activity').find({'streamId': streamId}, promise.resolve.bind(promise))
  return promise
})

//  TODO: Document use of promise and Step here
StreamSchema.static('findWithActivities', function (streamId, callback) {
  var promise = new mongoose.Promise;
  if (callback) promise.addBack(callback);
  var stream, activities
  Step(
    function() {
      Stream.findById(streamId, this.parallel())
      Stream.findActivities(streamId, this.parallel())
    },
    function(err, stream, activities) {
      var result = stream.toJSON()
      result.activities = activities
      promise.resolve.bind(promise)(null, result)
    }
  )
  return promise
})

/************ INSTANCE METHODS ***********************/

// Really strange bug, for some reason Activity is an empty
// object when this gets called if:
// test_activity is run before test_stream ?
// and the dropCollections helper is run :/
// also using alternative methods defn:
// Schema.methods.method = func... no work.
StreamSchema.method('findActivities', function (callback) {
  var promise = new mongoose.Promise;
  if (callback) promise.addBack(callback);
  // TODO: remove require statement below. See comment above.
  require('./activity').find({'streamId': this._id}, promise.resolve.bind(promise))
  return promise
})

Stream = mongoose.model('Stream', StreamSchema)
module.exports = Stream