class Sass::Plugin::Rack

That’s all there is to it!
The locations and frequency {file:SASS_REFERENCE.md#options can be customized}.
and regenerated every request if necessary.
Your CSS will be generated in ‘public/stylesheets`,
Put your Sass files in `public/stylesheets/sass`.
## Use
{file:SASS_REFERENCE.md#options See the Reference for more options}.
:full_exception => environment != :production)
:never_update => environment != :production,
:cache_location => ’./tmp/sass-cache’,
Sass::Plugin.options.merge(
## Customize
use Sass::Plugin::Rack
require ‘sass/plugin/rack’
## Activate
Rack middleware for compiling Sass code.

def self.disable_native_plugin!

This is done so that the stylesheets aren't checked twice for each request.
This is automatically done once the Rack plugin is activated.
Disable the native Rails or Merb plugins, if they're enabled. 
def self.disable_native_plugin!
  if defined?(Merb::Rack::Application) &&
      Haml::Util.has?(:instance_method, Merb::Rack::Application, :call_without_sass)
    Merb::Rack::Application.instance_eval {alias_method :call, :call_without_sass}
  end
  if defined?(ActionDispatch::Callbacks.to_prepare)
    ActionDispatch::Callbacks.skip_callback(:prepare, :__sass_process)
  elsif defined?(ActionController::Base) &&
      Haml::Util.has?(:instance_method, ActionController::Base, :sass_old_process)
    ActionController::Base.instance_eval {alias_method :process, :sass_old_process}
  end
end

def call(env)

Returns:
  • ((#to_i, {String => String}, Object)) - The Rack response

Parameters:
  • env () -- The Rack request environment 
def call(env)
  Sass::Plugin.check_for_updates
  @app.call(env)
end

def initialize(app)

Parameters:
  • app (#call) -- The Rack application 
def initialize(app)
  @app = app
  self.class.disable_native_plugin!
end