article.erb

<% @title = "Create a Micro Chameleon Blog with Sinatra" %>
<% @stylesheets = ["article"] %>
<% @javascripts = ["article"] %>

Content goes here...

pushpublic.rb

get "/articles/:article/:stylesheet.css" do
  content_type "text/css", :charset => "utf-8"
  less File.read "articles/#{params[:article]}/#{params[:stylesheet]}.less"
end

get "/articles/:article/:javascript.js" do
  content_type "text/javascript", :charset => "utf-8"
  File.read "articles/#{params[:article]}/#{params[:javascript]}.js"
end