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-rw-r--r--actionpack/lib/action_dispatch/http/cache.rb6
1 files changed, 4 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/http/cache.rb b/actionpack/lib/action_dispatch/http/cache.rb
index d57666525d..0d6015d993 100644
--- a/actionpack/lib/action_dispatch/http/cache.rb
+++ b/actionpack/lib/action_dispatch/http/cache.rb
@@ -28,8 +28,10 @@ module ActionDispatch
end
def etag_matches?(etag)
- etag = etag.gsub(/^\"|\"$/, "")
- if_none_match_etags.include?(etag)
+ if etag
+ etag = etag.gsub(/^\"|\"$/, "")
+ if_none_match_etags.include?(etag)
+ end
end
# Check response freshness (Last-Modified and ETag) against request