anchor.diff:  					input#_csrf(name="_csrf", type='hidden', value="#{_csrf}")
   					.form-group
   						label.control-label Title
  -						- if (post.title)
  -							input.form-control(type="text", placeholder="title", name="title", value='#{post.title}')
  -						- else
  -							input.form-control(type="text", placeholder="title", name="title")
  +						input.form-control(type="text", placeholder="title", name="title", rv-value="post:title")
   					.form-group
   						label.control-label Tags
  -						- if (post.tags)
  -							input.form-control(type="text", placeholder="comma-separated list of tags", name="tags", value='#{post.tags}')
  -						- else
  -							input.form-control(type="text", placeholder="comma-separated list of tags", name="tags")
  +						input.form-control(type="text", placeholder="comma-separated list of tags", name="tags", rv-value="post:tags")
   					.form-group
   						label.control-label Your post
  -						textarea.form-control(rows='20', name='content')
  -							= post.content
  +						textarea.form-control(rows='20', name='content', rv-value="post:content")
   						span.help-block You can use Markdown or limited html.
   					.form-group
   						.pull-right
  
positive.code: 	script(src='/js/app.js')
  	script.
  		var postjson = !{json};
  		var app = require('./build/js/app.js');
  		var Backbone = require('backbone');
  		Backbone.$ = window.$;
  		$(function()
  		{
  			var post = new app.PostModel();
  			post.set(postjson);
  			console.log(post);
  
  			var controller = new app.Postmonger();
  			Backbone.history.start({pushState: true});
  
  			rivets.bind($('#preview'),
  			{
  				post: post,
  				controller: controller
  			});
  		});
  
  block content
  
negative.code: 							button.btn.btn-primary(type="submit") Post
  			.col-md-5
  				#preview
  					h3 { post:title }
  					#content(rv-html="post:content | render")
  					#tags { post:tags }
  