       'submit form': 'submitted'
       'keyup input': 'keyup'
       'keyup textarea': 'keyup'
+      'change input[type=file]': 'file_chosen'
     if @extra_events
       form_events = _.extend(form_events, _.result(@, 'extra_events'))
     form_events

    e.preventDefault()
    @save

  keyup: (e) =>
    data = Backbone.Syphon.serialize(@)
    @model.set data

        context[model_name + '_url'] = model.url
        context[model_name + '_cid'] = model.cid
    else
      if not @model
        throw 'CompositeModelView : error : model is not set'
      context =
        model: @model.toJSON()
        cid: @model.cid
        url: @model.url

    @_rendered = true
    template_result = render do @get_template, context
