My locationsModel file:
mongoose = require 'mongoose'
threeTaps = require '../modules/threeTaps'
Schema = mongoose.Schema
ObjectId = Schema.ObjectId
LocationSchema =
  latitude: String
  longitude: String
  locationText: String
Location = new Schema LocationSchema
Location.methods.testFunc = (callback) ->
  console.log 'in test'
mongoose.model('Location', Location);
To call it, I'm using:
myLocation.testFunc {locationText: locationText}, (err, results) ->
But I get an error:
TypeError: Object function model() {
    Model.apply(this, arguments);
  } has no method 'testFunc'