This is a migration from my old blog post which sadly I have to take
down.

I find that I need this quite often, say if I have a hash like this:

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hash = {
  top: 'top level',
  level1: {
    level2: 'level 2'
  }
}

and I want to access the hash like this:

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obj.level1.level2 # => 'level 2'

so I use this class (taken form here to get what I want.

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require 'ostruct'

class DeepObject < OpenStruct

  def initialize(hash)
    @original = hash
    hash.each do |k,v|
      v = DeepObject.new(v) if v.is_a?(::Hash)
      hash[k] = v
    end
    super
  end

  def to_hash
    @original
  end
end

and I use it like this:

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deepobject = DeepObject.new(hash)
deepobject.top # => 'top level'
deepobject.level1.level2 # => 'level 2'
deepobject.level1.to_hash # => { :level2 => 'level 2' } }