From: Alexander Gehrke <lists@...>
Date: 2012-07-04T15:38:04+09:00
Subject: Ruby yaml custom domain type does not keep class

0 down vote favorite


I'm trying to dump duration objects (from the ruby-duration gem) to yaml
with a custom type, so they are represented in the form hh:mm:ss. I've
tried to modify the answer from this question, but when parsing the yaml
with YAML.load, a Fixnum is returned instead of a Duration.
Interestingly, the Fixnum is the total number of seconds in the
duration, so the parsing seems to work, but convert to Fixnum after
that.

An example output in irb:

irb> Duration.new(27500).to_yaml
=> "--- !example.com,2012-06-28/duration 7:38:20\n...\n"
irb> YAML.load(Duration.new(27500).to_yaml)
=> 27500
# should be <Duration:0xxxxxxx @seconds=20, @total=27500, @weeks=0,
@days=0, @hours=7, @minutes=38>

See attachment for code

Attachments:
http://www.ruby-forum.com/attachment/7561/yaml_duration.rb


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