1 files changed, 33 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/type/internal/abstract_json.rb b/activerecord/lib/active_record/type/internal/abstract_json.rb
new file mode 100644
index 0000000000..e19c5a14da
--- /dev/null
+++ b/activerecord/lib/active_record/type/internal/abstract_json.rb
@@ -0,0 +1,33 @@
+module ActiveRecord
+  module Type
+    module Internal # :nodoc:
+      class AbstractJson < ActiveModel::Type::Value # :nodoc:
+        include ActiveModel::Type::Helpers::Mutable
+
+        def type
+          :json
+        end
+
+        def deserialize(value)
+          if value.is_a?(::String)
+            ::ActiveSupport::JSON.decode(value) rescue nil
+          else
+            value
+          end
+        end
+
+        def serialize(value)
+          if value.nil?
+            nil
+          else
+            ::ActiveSupport::JSON.encode(value)
+          end
+        end
+
+        def accessor
+          ActiveRecord::Store::StringKeyedHashAccessor
+        end
+      end
+    end
+  end
+end