1 files changed, 27 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/bit.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/bit.rb
index 3073f8ff30..1dbb40ca1d 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/bit.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/bit.rb
@@ -2,7 +2,7 @@ module ActiveRecord
   module ConnectionAdapters
     module PostgreSQL
       module OID # :nodoc:
-        class Bit < Type::Value
+        class Bit < Type::Value # :nodoc:
           def type
             :bit
           end
@@ -19,6 +19,32 @@ module ActiveRecord
               value
             end
           end
+
+          def type_cast_for_database(value)
+            Data.new(super) if value
+          end
+
+          class Data
+            def initialize(value)
+              @value = value
+            end
+
+            def to_s
+              value
+            end
+
+            def binary?
+              /\A[01]*\Z/ === value
+            end
+
+            def hex?
+              /\A[0-9A-F]*\Z/i === value
+            end
+
+            protected
+
+            attr_reader :value
+          end
         end
       end
     end