From: Ryan Davis <ryand-ruby@...>
Date: 2009-11-14T08:04:38+09:00
Subject: Re: YAML dump, load: class not properly reconstituted


On Nov 13, 2009, at 12:58 , Pito Salas wrote:

> Here's some yaml:
> 
> ---
> - :status: :failure
>  :filename: !ruby/object:Pathname
>    path: /mydev/ballots/432Leon200dpibw001.tif
> - :status: :failure
>  :skew_angle: -0.72217746154481
>  :rotated: -0.72217746154481
>  :filename: !ruby/object:Pathname
>    path: /mydev/ballots/432Leon200dpibw002.tif
> 
> When I load this back into Ruby, I get something like this from pp:
> 
> #<PBScorer:0x1010d9bc8
> 
>  {:filename=>
>    #<Pathname:0x1010d5370
>     @class="Pathname",
>     @ivars=
>      {"path"=>"/mydev/iaharness/ballotsamples/432Leon200dpibw003.tif"}>}

I suspect you're not telling us all the relevant details. The following code works fine:

> #!/usr/bin/ruby -w
> 
> require 'yaml'
> require 'pathname'
> 
> # I had to fix your YAML indentation
> yaml = "---
> - :status: :failure
>   :filename: !ruby/object:Pathname
>     path: /mydev/ballots/432Leon200dpibw001.tif
> - :status: :failure
>   :skew_angle: -0.72217746154481
>   :rotated: -0.72217746154481
>   :filename: !ruby/object:Pathname
>     path: /mydev/ballots/432Leon200dpibw002.tif
> "
> 
> array = YAML.load(StringIO.new(yaml))
> 
> p array.first[:filename].absolute? # => true

If you comment out the pathname require, then it is a YAML object but it is obvious about it:

> #<YAML::Object:0x1004abb80 @class="Pathname", @ivars={"path"=>"/mydev/ballots/432Leon200dpibw001.tif"}>