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Module: ActionDispatch::Http::Cache::Request

Constant Summary

Instance Method Summary

Instance Method Details

#etag_matches?(etag) ⇒ Boolean

[ GitHub ] 

  


# File 'actionpack/lib/action_dispatch/http/cache.rb', line 30



def etag_matches?(etag)
  if etag
    validators = if_none_match_etags
    validators.include?(etag) || validators.include?("*")
  end
end


  








  

    #fresh?(response)  ⇒ Boolean 
  



  

    

Check response freshness (‘Last-Modified` and ETag) against request If-Modified-Since and If-None-Match conditions. If both headers are supplied, both must match, or the request is not considered fresh.


  





  


  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/http/cache.rb', line 40



def fresh?(response)
  last_modified = if_modified_since
  etag          = if_none_match

  return false unless last_modified || etag

  success = true
  success &&= not_modified?(response.last_modified) if last_modified
  success &&= etag_matches?(response.etag) if etag
  success
end


  








  

    #if_modified_since  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/http/cache.rb', line 12



def if_modified_since
  if since = get_header(HTTP_IF_MODIFIED_SINCE)
    Time.rfc2822(since) rescue nil
  end
end


  








  

    #if_none_match  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/http/cache.rb', line 18



def if_none_match
  get_header HTTP_IF_NONE_MATCH
end


  








  

    #if_none_match_etags  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/http/cache.rb', line 22



def if_none_match_etags
  if_none_match ? if_none_match.split(",").each(&:strip!) : []
end


  








  

    #not_modified?(modified_at)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/http/cache.rb', line 26



def not_modified?(modified_at)
  if_modified_since && modified_at && if_modified_since >= modified_at
end