Example of how to use Sinatra::Mapping

weblog.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'sinatra'
require 'sinatra/mapping' # only this line for use mapping!

map :root,    "blog"    # /blog/
map :entries, "posts"   # /blog/posts
map :tags,    "labels"  # /blog/labels

mapping :entry          => "posts/:entry_id",           # /blog/posts/id-for-post
        :entry_comments => "posts/:entry_id/comments",  # /blog/posts/id-for-post/comments
        :tagged_entries => "labels/:tag_id/entries"     # /blog/labels/id-for-tag/entries

# /blog/
get root_path do
  <<-end_content
    <h1>Welcome to Foo Web Application</h1>
    <ul>
      <li>#{link_to title_path(:entries), :entries, :title => title_path(:entries)}</li>
      <li>#{link_to title_path(:tags),    :tags,    :title => title_path(:tags)}</li>
    </ul>
  end_content
end

# /blog/entries
get entries_path do
  <<-end_content
    <h1>Welcome to Foo Web Application</h1>
    <h2>#{title_path(:entries)}</h2>
    <ul>
      <li>#{link_to "Testing new entry ...", :entries, "testing-new-entry"}</li>
      <li>#{link_to "Testing old entry ...", :entries, "testing-old-entry"}</li>
    </ul>
    <p>
      #{link_to "Back", :root}
    </p>
  end_content
end

# /blog/labels/tag-id-for-show-content
get tags_path do
  <<-end_content
    <h1>Welcome to Foo Web Application</h1>
    <h2>#{title_path(:tags)}</h2>
    <ul>
      <li>#{link_to "Ruby",    :tags, "ruby",    "entries"}</li>
      <li>#{link_to "Sinatra", :tags, "sinatra", "entries"}</li>
      <li>#{link_to "Mapping", :tags, "mapping", "entries"}</li>
    </ul>
    <p>
      #{link_to "Back", :root}
    </p>
  end_content
end

# /blog/entries/entry-id-for-show-content
get entry_path do |entry_id|
  title = entry_id.gsub('-',' ').capitalize
  <<-end_content
    <h1>Welcome to Foo Web Application</h1>
    <h2>#{title}</h2>
    <p>
      It works!
    </p>
    <p>
      #{link_to "Back", :root} | #{link_to "Comments", :entries, entry_id, 'comments'}
    </p>
  end_content
end

# /blog/entries/entry-id-for-show-content/comments
get entry_comments_path do |entry_id|
  title = entry_id.gsub('-',' ').capitalize
  <<-end_content
    <h1>Welcome to Foo Web Application</h1>
    <h2>#{title}</h2>
    <p>
      It works and show comments for "#{title}".
    </p>
    <p>
      #{link_to "Back", :root}
    </p>
  end_content
end

get tagged_entries_path do |tag_id|
  <<-end_content
    <h1>Welcome to Foo Web Application</h1>
    <h2>#{tag_id.capitalize}</h2>
    <p>
      It works and show all entries tagged with "#{tag_id}".
    </p>
    <p>
      #{link_to "Back", :root}
    </p>
  end_content
end