From: Rick DeNatale <rick.denatale@...>
Date: 2007-10-11T02:11:51+09:00
Subject: Re: YAML file problem

On 10/10/07, Feng Luhan <jiorry@gmail.com> wrote:
> I hava a yaml file as application config file. I use YAML::Store to
> reset yaml key value, but it is not work. please help me!
>
> y = YAML::Store.new( "#{RAILS_ROOT}/config_app/config.yml", :Indent => 2
> )
> y.transaction do
>   y['value'].key1 = 'aaa'   # undefined method `[]' for
> #<YAML::DomainType>
>   y['value'].key2 = 'bbb'
> end
>
> File.open('config.yml','a+') do |file|
>   yy = YAML::load(file)
>   puts yy.value['key1']     # key1 = 111
>   yy.value['key1'] = 'aaa'  # config.yml have not changed.
> end

Why should config.yml change?  yy is just whatever object which got
marshalled in when you read the file.  Try:

y = YAML::Store.new( "#{RAILS_ROOT}/config_app/config.yml", :Indent => 2)
y.transaction do
 y['value'].key1 = 'aaa'
 y['value'].key2 = 'bbb'
end

y.transaction do
 puts y.value['key1']     # key1 = 111
 y.value['key1'] = 'aaa'
end


-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/