Refactor from Backbone to Angular.

AngularWay

window.commentsCtrl = ($http, $scope, $element)->
  update = ()->
    $http.get(location.pathname).success (result)->
        $scope.comments = result.comments
  update()

  e$form = $element.find('form')
  e$form.submit (e)->
    e.preventDefault()
    $.post(e$form.attr('action'), e$form.serialize(), ()->
      update()
      e$form.find('textarea').val()
    )

BackboneWay

App.CommentModel = Backbone.Model.extend({
    url: '/comments'
})

App.CommentCollection = Backbone.Collection.extend({
    model: App.CommentModel
    url: '/comments'
})


App.CommentItem = Backbone.View.extend({
    render: ()->
        html = JST['comments/show']( @model.toJSON() )
        this.$el.empty().append( html )

        return this
})


App.CommentList = Backbone.View.extend({
    tagName:   'table'
    className: 'table'
    initialize: ()->
        @collection.on('all', ( ()-> console.log(arguments) ) , @)
        @collection.on('sync', @render, @)
        @collection.on('add', @renderItem, @)

        @collection.fetch({data: {post_id: @options.postId}})

    render: ()->
        self = this

        this.$el.empty()

        @collection.each (comment)->
            self.renderItem(comment)

        return this

    renderItem: (comment)->
        view = new App.CommentItem( {model: comment} )
        this.$el.append( view.render().$el.html() )

        return this

})

$ ()->
        comments = new App.CommentCollection()
        commentsView = new App.CommentList({collection: comments, postId: data.postId})

        $('.comments').append(commentsView.render().el)

        $('.new-comment').on 'click', 'a', (e)->
            e.preventDefault()

            $(e.delegateTarget).load(e.target.href)

        $('.new-comment').on 'submit', '#new_comment', (e)->
            e.preventDefault()

            $form = $(this)

            createComment = $.ajax({
                url      : $form.attr('action')
                type     : 'POST'
                data     : $form.serializeArray()
                dataType : 'json'
            })

            createComment.success (data, result)->
                if result is not 'success'
                    return

                comments.add(data)

                $form.find('textarea').val('')