Class: Abtest::ManifestManager

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/abtest.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ManifestManager

Returns a new instance of ManifestManager.



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# File 'lib/abtest.rb', line 13

def initialize
  @manifests = {'default' => default_manifest }
end

Instance Attribute Details

#manifests ⇒ Object

Returns the value of attribute manifests.



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# File 'lib/abtest.rb', line 11

def manifests
  @manifests
end

Instance Method Details

#create_manifest(name) ⇒ Object 



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# File 'lib/abtest.rb', line 63

def create_manifest name
  app                   = Rails.application
  experiment_path       = File.join(app.root, 'abtest', 'experiments', name)
  application_css_path  = File.join(experiment_path, app.config.assets.prefix, 'stylesheets')
  images_path           = File.join(experiment_path, app.config.assets.prefix, 'images')
  javascript_path       = File.join(experiment_path, app.config.assets.prefix, 'javascripts')

  # Create a custom sprockets environment
  experiment_environment = Sprockets::Environment.new(Rails.root.to_s) do |env|
    env.context_class.class_eval do
      include ::Sprockets::Rails::Helper
    end
  end

  # Monkey patch class in-place with sass_config accessor
  experiment_environment.context_class.extend(::Sass::Rails::Railtie::SassContext)

  # Always calculate digests and compile files
  app.config.assets.digest      = true
  app.config.assets.compile     = true
  experiment_environment.cache  = :null_store  # Disables the Asset cache

  experiment_environment.prepend_path("#{application_css_path}")
  experiment_environment.prepend_path("#{images_path}")
  experiment_environment.prepend_path("#{javascript_path}")

  # Copy config.assets.paths to Sprockets
  app.config.assets.paths.each do |path|
    experiment_environment.append_path path
  end

  experiment_environment.js_compressor  = app.config.assets.js_compressor
  experiment_environment.css_compressor = app.config.assets.css_compressor

  if app.config.logger
    experiment_environment.logger = app.config.logger
  else
    experiment_environment.logger       = Logger.new($stdout)
    experiment_environment.logger.level = Logger::INFO
  end

  output_file                                         = File.join(app.root, 'public', app.config.assets.prefix, 'experiments', name)
  experiment_environment.context_class.assets_prefix  = "#{app.config.assets.prefix}/experiments/#{name}"
  experiment_environment.context_class.digest_assets  = app.config.assets.digest
  experiment_environment.context_class.config         = app.config.action_controller
  experiment_environment.context_class.sass_config    = app.config.sass

  manifests[name] = Sprockets::Manifest.new(experiment_environment, output_file)
end

#default_manifest ⇒ Object 



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# File 'lib/abtest.rb', line 21

def default_manifest
  app = Rails.application

  # Create a custom sprockets environment
  default_environment = Sprockets::Environment.new(Rails.root.to_s) do |env|
    env.context_class.class_eval do
      include ::Sprockets::Rails::Helper
    end
  end

  # Monkey patch class in-place with sass_config accessor
  default_environment.context_class.extend(::Sass::Rails::Railtie::SassContext)

  # Always calculate digests and compile files
  app.config.assets.digest      = true
  app.config.assets.compile     = true
  default_environment.cache     = :null_store  # Disables the Asset cache

  # Copy config.assets.paths to Sprockets
  app.config.assets.paths.each do |path|
    default_environment.append_path path
  end

  default_environment.js_compressor  = app.config.assets.js_compressor
  default_environment.css_compressor = app.config.assets.css_compressor

  if app.config.logger
    default_environment.logger = app.config.logger
  else
    default_environment.logger       = Logger.new($stdout)
    default_environment.logger.level = Logger::INFO
  end

  output_file                                      = File.join(app.root, 'public', app.config.assets.prefix)
  default_environment.context_class.assets_prefix  = "#{app.config.assets.prefix}"
  default_environment.context_class.digest_assets  = app.config.assets.digest
  default_environment.context_class.config         = app.config.action_controller
  default_environment.context_class.sass_config    = app.config.sass

  Sprockets::Manifest.new(default_environment, output_file)
end

#retrieve_manifest(name) ⇒ Object 



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# File 'lib/abtest.rb', line 17

def retrieve_manifest name
  manifests[name] ||= create_manifest(name)
end