1 files changed, 16 insertions, 12 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/json.rb b/activesupport/lib/active_support/core_ext/object/json.rb
index 698b2d1920..09349bd85a 100644
--- a/activesupport/lib/active_support/core_ext/object/json.rb
+++ b/activesupport/lib/active_support/core_ext/object/json.rb
@@ -9,7 +9,6 @@ require 'time'
 require 'active_support/core_ext/time/conversions'
 require 'active_support/core_ext/date_time/conversions'
 require 'active_support/core_ext/date/conversions'
-require 'active_support/core_ext/module/aliasing'
 
 # The JSON gem adds a few modules to Ruby core classes containing :to_json definition, overwriting
 # their default behavior. That said, we need to define the basic to_json method in all of them,
@@ -26,22 +25,27 @@ require 'active_support/core_ext/module/aliasing'
 # bypassed completely. This means that as_json won't be invoked and the JSON gem will simply
 # ignore any options it does not natively understand. This also means that ::JSON.{generate,dump}
 # should give exactly the same results with or without active support.
-[Object, Array, FalseClass, Float, Hash, Integer, NilClass, String, TrueClass, Enumerable].each do |klass|
-  klass.class_eval do
-    def to_json_with_active_support_encoder(options = nil)
-      if options.is_a?(::JSON::State)
-        # Called from JSON.{generate,dump}, forward it to JSON gem's to_json
-        self.to_json_without_active_support_encoder(options)
-      else
-        # to_json is being invoked directly, use ActiveSupport's encoder
-        ActiveSupport::JSON.encode(self, options)
+
+module ActiveSupport
+  module CoreExt
+    module ToJsonWithActiveSupportEncoder
+      def to_json(options = nil)
+        if options.is_a?(::JSON::State)
+          # Called from JSON.{generate,dump}, forward it to JSON gem's to_json
+          super(options)
+        else
+          # to_json is being invoked directly, use ActiveSupport's encoder
+          ActiveSupport::JSON.encode(self, options)
+        end
       end
     end
-
-    alias_method_chain :to_json, :active_support_encoder
   end
 end
 
+[Object, Array, FalseClass, Float, Hash, Integer, NilClass, String, TrueClass, Enumerable].reverse_each do |klass|
+  klass.prepend(ActiveSupport::CoreExt::ToJsonWithActiveSupportEncoder)
+end
+
 class Object
   def as_json(options = nil) #:nodoc:
     if respond_to?(:to_hash)