Class: Rack::Adapter::Rails

Class Rack::Adapter::Rails < Object

(in files lib/rack/adapter/rails.rb )

Adapter to run a Rails app with any supported Rack handler. By default it will try to load the Rails application in the current directory in the development environment.

Options: 

 root: Root directory of the Rails app
 environment: Rails environment to run in (development [default], production or test)
 prefix: Set the relative URL root.

Based on fuzed.rubyforge.org/ Rails adapter

Methods

Public Class new(options={})

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    # File lib/rack/adapter/rails.rb, line 18
18:       def initialize(options={})
19:         @root   = options[:root]         || Dir.pwd
20:         @env    = options[:environment]  || 'development'
21:         @prefix = options[:prefix]
22:         
23:         load_application
24:         
25:         @rails_app = if ActionController::Dispatcher.instance_methods.include?(:call)
26:           ActionController::Dispatcher.new
27:         else
28:           CgiApp.new
29:         end
30:         
31:         @file_app = Rack::File.new(::File.join(RAILS_ROOT, "public"))
32:       end

Public Instance call(env)

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    # File lib/rack/adapter/rails.rb, line 54
54:       def call(env)
55:         path        = env['PATH_INFO'].chomp('/')
56:         method      = env['REQUEST_METHOD']
57:         cached_path = (path.empty? ? 'index' : path) + ActionController::Base.page_cache_extension
58:         
59:         if FILE_METHODS.include?(method)
60:           if file_exist?(path)              # Serve the file if it's there
61:             return @file_app.call(env)
62:           elsif file_exist?(cached_path)    # Serve the page cache if it's there
63:             env['PATH_INFO'] = cached_path
64:             return @file_app.call(env)
65:           end
66:         end
67:         
68:         # No static file, let Rails handle it
69:         @rails_app.call(env)
70:       end

Public Instance file_exist?(path)

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    # File lib/rack/adapter/rails.rb, line 49
49:       def file_exist?(path)
50:         full_path = ::File.join(@file_app.root, Utils.unescape(path))
51:         ::File.file?(full_path) && ::File.readable_real?(full_path)
52:       end

Public Instance load_application()

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    # File lib/rack/adapter/rails.rb, line 34
34:       def load_application
35:         ENV['RAILS_ENV'] = @env
36: 
37:         require "#{@root}/config/environment"
38:         require 'dispatcher'
39:         
40:         if @prefix
41:           if ActionController::Base.respond_to?(:relative_url_root=)
42:             ActionController::Base.relative_url_root = @prefix # Rails 2.1.1
43:           else
44:             ActionController::AbstractRequest.relative_url_root = @prefix
45:           end
46:         end
47:       end