Backbone のモデルでプロパティのように属性にアクセスする

access_as_property.coffee

# 参考: http://www.narrativescience.com/blog/automatically-creating-getterssetters-for-backbone-models/

buildProperties = (model) ->
    buildGetter = (name) -> () -> model.get name
    buildSetter = (name) -> (value) -> model.set name, value
    for attribute in _.keys model.defaults
        Object.defineProperty model, attribute,
            get: buildGetter attribute
            set: buildSetter attribute
            
            
Person = Backbone.Model.extend
    initialize: ->
        buildProperties @
        
    defaults:
        name: undefined
        age:  undefined
        
p = new Person name: 'R', age: 20

p.name #=> "R"
p.age = 30
p.age #=> 30