load multiple sinatra apps

0_overview.txt

**After the fact**
namelessjon pointed me in the right direction.
map /asdasdasd do
  run app
end
request.env['SCRIPT_NAME'] = "/asdasdasd"

also this is all in gem form: http://github.com/emk/sinatra-url-for/tree/master

I needed a way to have my apps be under scm and all config stuff be somewhere else.
Then I can do this:
* Checkout apps into own directories
* Configure config.ru
* thin start -R config.ru

Considerations:
* I'll always run the stack via a config.ru (either standalone app or bunch of standalone apps in a stack)
* I want to have a stack as a combo git submodules therefore apps need to be standalone and play nice together
* This an idea I came up with quickly - I have limited ruby knowledge, I'm maxing out my ruby fu here ;)
* I also use the merb (thor) bundler - for quickness none of that is shown...
* As long as the app has a unique name it won't clash with other apps. obviously "blog" would if there were two apps called "blog". My apps aren't named with generic adjectives, I use proper nouns.

Directory Structure

|_app_dir/
 |_lib/
  |_ blog/
   |_blog/
    |_views/
     |_posts/
      |_index.haml
      |_new.haml
    |_static/
     |_logo.png
   |_blog.rb
 |_config.ru

1_config.ru

# run with thin start -R config.ru

require "haml"
require "sinatra/base"
##
$:.unshift "#{pwd}/lib/blog" # <-pretty sure i've read something that discourages this - however I haven't found the "proper" way to do it. Suffice to say this "works"....
require "blog"
map "/blog" do
  run Blog::Main
end

blog.rb

module Blog

  class Main < Sinatra::Base

    set :app_file, __FILE__
    set :static, true
    set :public, Proc.new { File.join(root, "blog", "static") }
    set :views,  Proc.new { File.join(root, "blog", "views") }

    helpers do
      # http://github.com/namelessjon has shown me the light ;)
      def link_to(uri = "/")
        "#{request.env['SCRIPT_NAME']}#{uri}"
      end
    end
    
    get "/posts" do
      haml :"posts/index"
    end
    
    get "/posts/new" do
      haml :"posts/new"
    end
  end
end

index.haml

%img{ :src => link_to("/logo.png"), :alt => "logo"}
%h1 Posts - Index
%a{ :href => link_to("/posts/new"), :title => "Create a New Post" } New

new.haml

%img{ :src => link_to("/logo.png"), :alt => "logo"}
%h1 Post - New
%a{ :href => link_to("/posts"), :title => "Cancel and go back to index" } Cancel