A Backbone.js Collection of multiple Model subclasses

Question

I have a REST Json API that returns a list \"logbooks\". There are many types of logbooks that implement different but similar behavior. The server side implementation of th

Answer 1

Maybe it's bad to use eval, but this is much more ruby-style way (coffeescript):

  parse: (resp)->
    _(resp).map (attrs) ->
      eval("new App.Models.#{attrs.type}(attrs)")

So you don't need to write a lot of switch/cases, just set type attribute in your JSON. It works very good with rails+citier or other multitable inheritance solution. You can add new descendants without adding them to your cases.

And you can use such constructions in other places where you need a lot of switch/cases depending on your model class.