From: Juan Matias <jmrepetti@...>
Date: 2010-04-14T00:21:17+09:00
Subject: Re: YAML and DateTime

There's a workarount you can do,
in /usr/local/lib/ruby/1.8/yaml/rubytypes.rb you have this definition of 
#to_yaml on Date class.

1 class Date
2   yaml_as "tag:yaml.org,2002:timestamp#ymd"
3   def to_yaml( opts = {} )
4     YAML::quick_emit( self, opts ) do |out|
5     out.scalar( "tag:yaml.org,2002:timestamp", self.to_s, :plain )
6   end
7  end
8 end

What I do in my Rails app is to overide this implementation,

1 class Date
2   yaml_as "tag:yaml.org,2002:timestamp#ymd"
3   def to_yaml( opts = {} )
4    YAML::quick_emit( self, opts ) do |out|
5    out.scalar( "tag:yaml.org,2002:timestamp", self.to_s(:utc), :plain 
)
6    end
7  end
8 end

"self.to_s(:utc)" is the difference in line 5.It works for me.

I hope this help.
Bye.
Juan Matias.
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