Code for {{say ...}} for parsing placeholders etc.

handlebars_say.js

App.registerViewHelper = (name, view) ->
  Em.Handlebars.registerHelper name, (property, options) ->
		options.hash.textBinding = property.toString()
		Em.Handlebars.helpers.view.call this, view, options

App.registerViewHelper 'say', Em.View.extend
	tagName: 'span'
	template: Em.Handlebars.compile('{{view.say}}')
	
	# Properties:
	say: (->
		text = @get('text')
		placeholder = @get('placeholder')

		text = text.replace '{{placeholder}}', placeholder if placeholder?

		new Handlebars.SafeString text
	).property 'text', 'placeholder'