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

etag_matches?(etag) click to toggle source

    # File lib/action_dispatch/http/cache.rb, line 21
21:         def etag_matches?(etag)
22:           if_none_match && if_none_match == etag
23:         end

fresh?(response) click to toggle source

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.

    # File lib/action_dispatch/http/cache.rb, line 28
28:         def fresh?(response)
29:           last_modified = if_modified_since
30:           etag          = if_none_match
31: 
32:           return false unless last_modified || etag
33: 
34:           success = true
35:           success &&= not_modified?(response.last_modified) if last_modified
36:           success &&= etag_matches?(response.etag) if etag
37:           success
38:         end

if_modified_since() click to toggle source

    # File lib/action_dispatch/http/cache.rb, line 7
 7:         def if_modified_since
 8:           if since = env['HTTP_IF_MODIFIED_SINCE']
 9:             Time.rfc2822(since) rescue nil
10:           end
11:         end

if_none_match() click to toggle source

    # File lib/action_dispatch/http/cache.rb, line 13
13:         def if_none_match
14:           env['HTTP_IF_NONE_MATCH']
15:         end

not_modified?(modified_at) click to toggle source

    # File lib/action_dispatch/http/cache.rb, line 17
17:         def not_modified?(modified_at)
18:           if_modified_since && modified_at && if_modified_since >= modified_at
19:         end

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