hello.slim

p こんにちは、#{h params[:name]}さん！
a href='/' 戻る

helloslim.rb

# -*- coding: utf-8 -*-

require 'rubygems'
require 'sinatra'
require 'haml'
require 'slim'

module Sinatra
  module Templates
    def slim(template, options={}, locals={})
      render :slim, template, options, locals
    end 
  end
end

helpers do
  include Rack::Utils; alias_method :h, :escape_html
end

get '/' do
  slim :index
end

post '/hello' do
  slim :hello
end

index.slim

p あなたの名前は？
form action="/hello" method="POST"
  input type="text" name="name"
  input type="submit" value="送信"

layout.slim

html
  body
    h1 Hello World
    == yield