From: Joel VanderWerf <vjoel@...>
Date: 2008-11-27T02:30:27+09:00
Subject: Re: Exclude members from YAML conversion?

Christian Kerth wrote:
>> You can override yaml_properties to return only the ones you want to be
>> in the yaml string.
> 
> where do i overwrite this method?
> 
> in my user object?
> 
> can you give an example?
> 
> thx

require 'yaml'

class C
   attr_reader :x, :y, :z

   def initialize x, y, z
     @x, @y, @z = x, y, z
   end

   def to_yaml_properties
     super - ["@x"]
   end
end

c = C.new 1, 2, 3
p c.to_yaml_properties
puts c.to_yaml

__END__

Output:

["@y", "@z"]
--- !ruby/object:C
y: 2
z: 3


-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407