From: Stefano Crocco <stefano.crocco@...>
Date: 2013-04-30T22:55:07+09:00
Subject: Re: YML and Hashery GEM

On Tuesday 30 April 2013 Daniel Stephens wrote
> Hey Guys I need some help. This post may be long, but I'll do my best to
> keep it to the details.
> 
> I have a old environment I've been tasked with moving from 1.8.6 to 1.9.3
> 
> This environment has a custom library that is used by a bunch of different
> ruby applications. The portion I'm having issue with right now is it used
> to use Facets/OpenCascade, so when it would load the YML you would get a
> object back(hash) that you could reference like a.b.c(or config.db)
> Anyhow Facets appears to have removed a bunch of this and gone to more core
> libs, but I found the gem Hashery and it seems like it will do what I want.
> But I can't not get the call to work. I keep getting wrong # of arguments
> on initialize. Below is my code and exception.
> 
> yml:
>  Code:
> 
> db:
>   database:    dbserver
>   host:          sql01
>   user:          user
>   password:   password
> 
> 
> 
> 
> load_config.rb
>  Code:
> 
> config = YAML::load(IO.read(File.join(@path, "environment.yml")))
> config.merge!(YAML::load(IO.read(File.join(@path,
> "environments/#{@environment}.yml"))))
> @config = Hashery::OpenCascade.new(config)
> 
> 
> 
> open_cascade.rb
>  Code:
> 
> class OpenCascade < OpenHash
> def initialize(*default)
>   @read = {}
>    leet = lambda { |h,k| h[k] = OpenCascade.new(&leet) }
>    super(*default, &leet)
> end
> 
> 
> 
> open_hash.rb
>  Code:
> 
> class OpenHash < CRUDHash
> 
> def initialize(default=nil, safe=false, &block)
>   @safe = safe
>    super(*[default].compact, &block) *<-- my debug throws the exception
> here* end
> 
> 
> 
> crud_hash.rb <-- there is no initialize method here, which is one of my
> confusion points. I don't understand what it's init'ing I can attach this
> class if need be.
> 
> Exception:
>  Code:
> 
> C:/Ruby193/lib/ruby/gems/1.9.1/gems/hashery-2.0.1/lib/hashery/open_hash.rb:3
> 6:in `initialize': wrong number of argu
> ments (ArgumentError)
>         from
> C:/Ruby193/lib/ruby/gems/1.9.1/gems/hashery-2.0.1/lib/hashery/open_hash.rb:
> 36:in `initialize'
>         from
> C:/Ruby193/lib/ruby/gems/1.9.1/gems/hashery-2.0.1/lib/hashery/open_cascade.
> rb:65:in `initialize'
> 
> 
> 
> I'll provide whatever else is needed. Thanks in advance!

I think the problem comes from the fact that you're passing both a default 
value and a block to Hash#initialize (since CRUDHash doesn't override it). If 
you look at the documentation for Hash#initialize, you'll see that only one of 
the two may be given.

I hope this helps

Stefano