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Class: ActionView::Digestor

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
ActionView::PartialDigestor
Inherits: Object
Defined in: actionview/lib/action_view/digestor.rb

Class Attribute Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(options) ⇒ Digestor

[ GitHub ] 

  


# File 'actionview/lib/action_view/digestor.rb', line 56



def initialize(options)
  @name, @finder = options.values_at(:name, :finder)
  @options = options.except(:name, :finder)
end


  







Class Attribute Details



  

    .cache   (readonly)
    Also known as: #cache
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 7



cattr_reader(:cache)


  







Class Method Details



  

    .digest(options)  
  



  

    

Supported options:



  



  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 18



def digest(options)
  options.assert_valid_keys(:name, :finder, :dependencies, :partial)

  cache_key = ([ options[:name], options[:finder].details_key.hash ].compact + Array.wrap(options[:dependencies])).join('.')

  # this is a correctly done double-checked locking idiom
  # (ThreadSafe::Cache's lookups have volatile semantics)
  @@cache[cache_key] || @@digest_monitor.synchronize do
    @@cache.fetch(cache_key) do # re-check under lock
      compute_and_store_digest(cache_key, options)
    end
  end
end


  







Instance Attribute Details



  

    #cache   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 7



cattr_reader(:cache)


  








  

    #finder   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 54



attr_reader :name, :finder, :options


  








  

    #name   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 54



attr_reader :name, :finder, :options


  








  

    #options   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 54



attr_reader :name, :finder, :options


  







Instance Method Details



  

    #dependencies  
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 70



def dependencies
  DependencyTracker.find_dependencies(name, template)
rescue ActionView::MissingTemplate
  logger.try :error, "  '#{name}' file doesn't exist, so no dependencies"
  []
end


  








  

    #digest  
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 61



def digest
  Digest::MD5.hexdigest("#{source}-#{dependency_digest}").tap do |digest|
    logger.try :debug, "  Cache digest for #{template.inspect}: #{digest}"
  end
rescue ActionView::MissingTemplate
  logger.try :error, "  Couldn't find template for digesting: #{name}"
  ''
end


  








  

    #nested_dependencies  
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/digestor.rb', line 77



def nested_dependencies
  dependencies.collect do |dependency|
    dependencies = PartialDigestor.new(name: dependency, finder: finder).nested_dependencies
    dependencies.any? ? { dependency => dependencies } : dependency
  end
end