multiple collections per model instance

gistfile1.coffee

tlmodel = (attributes, options) ->
    attributes          = _.extend({}, defaults, attributes)  if defaults = getValue(this, "defaults")
    attributes or       = {}
    options or          = {}
    attributes          = @parse(attributes)  if options.parse
    @collections        = {}
    @attributes         = {}
    @_escapedAttributes = {}
    @cid                = _.uniqueId("c")
    @changed            = {}
    @_silent            = {}
    @_pending           = {}
    collection          = options.collection
    @collections[collection.label] = collection  if collection
    @set attributes, silent: true
    @changed  = {}
    @_silent  = {}
    @_pending = {}
    @_previousAttributes = _.clone(@attributes)
    @initialize.apply this, arguments

window.TLModel = Backbone.Model.extend
  constructor: tlmodel