app.rb

require 'sinatra'
require 'haml'

class Something  
  def self.all( h= {} )
    []
  end
  def self.get( id=1 )
    obj = Object.new
    class << obj
      def date
        Time.now
      end
      def value
        "something"
      end
    end
    obj
  end
end

configure do
  enable :inline_templates
end

helpers do
  def logged_in?
    false
  end
end
 
get '/' do
  if logged_in?
		@variable = Something.all(:user => current_user.id)
		@title = "Home"
	else
		@variable = Something.all
		@title = "Home (not logged in)"
	end
	haml :home
end
 
get '/:id' do |id|
  @variable = Something.get id
	@title = "Stuff ##{params[:id]}"
	haml :show_stuff
end

__END__

@@layout
%html
  %head
    %title= @title
  %body
    = "@variable = #{@variable.inspect}"
    = yield

@@home
%h1
  Home

@@show_stuff
%p
  ="The value for #{@variable.date.strftime('%d %b %Y')} is #{@variable.value}. Do you wish to"
  %a{:href => "/#{params[:id]}/edit"} change
  it?