A function for automatically adding getter/setters to Backbone models.

buildProperties.coffee

buildProperties = (func) ->
  buildGetter = (name) ->
    -> @get name
  buildSetter = (name) ->
    (value) -> @set name, value
  for attr in func.prototype.attributeNames
    Object.defineProperty func.prototype, attr,
      get: buildGetter attr
      set: buildSetter attr

exports.buildProperties = buildProperties

client.coffee

{buildProperties} = require './buildProperties'
backbone = require 'backbone'

class Character extends backbone.Model
  attributeNames: ['name', 'age']
  buildProperties @
guy = new Character
  name: 'Guybrush'
  age: 20
console.log guy.get 'name' # "Guybrush"
console.log guy.name # "Guybrush"
guy.name = 'Murray'
console.log guy.name # "Murray"
guy.age++
console.log guy.age # 21
console.log guy.attributes # {'name':'Murray', 'age':21}

clientAfterImprovingBuildProperties.coffee

guy = new Person
  name: 'Guybrush'
elaine = new Person
  name: 'Elaine'
guy.spouse = elaine
elaine.spouse = guybrush
guy.spouse is elaine # true
console.log guy.attributes # {'spouse':42}