Remove code duplication in ActiveSupport::Cache

1 files changed, 11 insertions, 26 deletions

diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index 976104e0c4..9f91f9b576 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -90,11 +90,16 @@ module ActiveSupport
       private
         def retrieve_cache_key(key)
           case
-          when key.respond_to?(:cache_key_with_version) then key.cache_key_with_version
-          when key.respond_to?(:cache_key)              then key.cache_key
-          when key.is_a?(Array)                         then key.map { |element| retrieve_cache_key(element) }.to_param
-          when key.respond_to?(:to_a)                   then retrieve_cache_key(key.to_a)
-          else                                               key.to_param
+          when key.respond_to?(:cache_key_with_version)
+            key.cache_key_with_version
+          when key.respond_to?(:cache_key)
+            key.cache_key
+          when key.is_a?(Hash)
+            key.sort_by { |k, _| k.to_s }.collect { |k, v| "#{k}=#{v}" }.to_param
+          when key.respond_to?(:to_a)
+            key.to_a.collect { |element| retrieve_cache_key(element) }.to_param
+          else
+            key.to_param
           end.to_s
         end
 
@@ -565,33 +570,13 @@ module ActiveSupport
         # Prefixes a key with the namespace. Namespace and key will be delimited
         # with a colon.
         def normalize_key(key, options)
-          key = expanded_key(key)
+          key = Cache.expand_cache_key(key)
           namespace = options[:namespace] if options
           prefix = namespace.is_a?(Proc) ? namespace.call : namespace
           key = "#{prefix}:#{key}" if prefix
           key
         end
 
-        # Expands key to be a consistent string value. Invokes +cache_key+ if
-        # object responds to +cache_key+. Otherwise, +to_param+ method will be
-        # called. If the key is a Hash, then keys will be sorted alphabetically.
-        def expanded_key(key)
-          return key.cache_key.to_s if key.respond_to?(:cache_key)
-
-          case key
-          when Array
-            if key.size > 1
-              key = key.collect { |element| expanded_key(element) }
-            else
-              key = key.first
-            end
-          when Hash
-            key = key.sort_by { |k, _| k.to_s }.collect { |k, v| "#{k}=#{v}" }
-          end
-
-          key.to_param
-        end
-
         def normalize_version(key, options = nil)
           (options && options[:version].try(:to_param)) || expanded_version(key)
         end