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Cascade unbind nested views in backbone.js
_.extend Backbone.View.prototype,
renderView: (el, func, view) ->
$.fn[func].call(el, view.render().el)
@views ||= []
@views.push view
disposeViews: ->
if @views
_(@views).each (view) ->
# bindTo, unbindFromAll
dispose: ->
# in some view
@renderView $(@el), 'append', view
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