Class: Rack::Adapter::Rails

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/adapter/rails.rb

Defined Under Namespace

Classes: CGIWrapper, CgiApp

Constant Summary collapse

FILE_METHODS = 
%w(GET HEAD).freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Rails

Returns a new instance of Rails.



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# File 'lib/rack/adapter/rails.rb', line 18

def initialize(options={})
  @root   = options[:root]         || Dir.pwd
  @env    = options[:environment]  || 'development'
  @prefix = options[:prefix]
  
  load_application
  
  @rails_app = if self.class.rack_based?
    ActionController::Dispatcher.new
  else
    CgiApp.new
  end
  
  @file_app = Rack::File.new(::File.join(RAILS_ROOT, "public"))
end

Class Method Details

.rack_based? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack/adapter/rails.rb', line 72

def self.rack_based?
  rails_version = ::Rails::VERSION
  return false if rails_version::MAJOR < 2
  return false if rails_version::MAJOR == 2 && rails_version::MINOR < 2
  return false if rails_version::MAJOR == 2 && rails_version::MINOR == 2 && rails_version::TINY < 3
  true # >= 2.2.3
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/adapter/rails.rb', line 54

def call(env)
  path        = env['PATH_INFO'].chomp('/')
  method      = env['REQUEST_METHOD']
  cached_path = (path.empty? ? 'index' : path) + ActionController::Base.page_cache_extension
  
  if FILE_METHODS.include?(method)
    if file_exist?(path)              # Serve the file if it's there
      return @file_app.call(env)
    elsif file_exist?(cached_path)    # Serve the page cache if it's there
      env['PATH_INFO'] = cached_path
      return @file_app.call(env)
    end
  end
  
  # No static file, let Rails handle it
  @rails_app.call(env)
end

#file_exist?(path) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack/adapter/rails.rb', line 49

def file_exist?(path)
  full_path = ::File.join(@file_app.root, Utils.unescape(path))
  ::File.file?(full_path) && ::File.readable_real?(full_path)
end

#load_application ⇒ Object 



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# File 'lib/rack/adapter/rails.rb', line 34

def load_application
  ENV['RAILS_ENV'] = @env

  require "#{@root}/config/environment"
  require 'dispatcher'
  
  if @prefix
    if ActionController::Base.respond_to?(:relative_url_root=)
      ActionController::Base.relative_url_root = @prefix # Rails 2.1.1
    else
      ActionController::AbstractRequest.relative_url_root = @prefix
    end
  end
end