Add to_s method to SQLServer::Type::Char::Data object

[marceloeloelo]

@metaskills with the latest introduction of SQLServer::Type::Char::Data object one of the active record serializers that my app is using stopped working.

I chased the issue down to https://github.com/rails/rails/blob/4-2-stable/activerecord/lib/active_record/type/string.rb#L35 where active record calls value.to_s.

Since value is of type ActiveRecord::ConnectionAdapters::SQLServer::Type::Char::Data it was not doing what is expected.

Since the object doesn't have the to_s implementation it was returning a flat "#<ActiveRecord::ConnectionAdapters::SQLServer::Type::Char::Data:0x000000044a0fe8>" string, instead of returning the actual value from the database, breaking the serializer.

This PR adds just that, to_s implementation. Thoughts?

[metaskills]

Good stuff! I added an alias_method :to_str, :to_s which is what ActiveRecord also does for the binary type's #to_s method. Will push this out in v4.2.13 soon.

[marceloeloelo]

Thanks @metaskills! Do you have an idea on when v4.2.13 will be released? 😅

[metaskills]

WHOOPS! Done now :)

[marceloeloelo]

Thanks!