Overwrite _type_cast method

Author: merodriguezblanco

lib/active_record/connection_adapters/sqlserver/quoting.rb

@@ -63,6 +63,15 @@ def _quote(value)
           end
         end
 
+        def _type_cast(value)
+          case value
+          when ActiveRecord::Type::SQLServer::Char::Data
+            value.to_s
+          else
+            super
+          end
+        end
+
       end
     end
   end