Hash-Ninja

require 'active_support'
require 'hash_ninja'

name = {'fullName' => {'firstName' => 'Linus', 'lastName' => 'Torvalds'}}
name['fullName']['firstName'].should eq('Linus')
name['fullName']['lastName'].should eq('Torvalds')

name.activate!
# => {"fullName"=>{"firstName"=>"Linus", "lastName"=>"Torvalds"}}

name.recursively_underscore_keys!
# => {"full_name"=>{"first_name"=>"Linus", "last_name"=>"Torvalds"}}
name['full_name']['first_name'].should eq('Linus')
name['full_name']['last_name'].should eq('Torvalds')

name.recursively_symbolize_keys!
# => {:full_name=>{:first_name=>"Linus", :last_name=>"Torvalds"}}
name[:full_name][:first_name].should eq('Linus')
name[:full_name][:last_name].should eq('Torvalds')

name_attr = name.to_attr_reader
# => #<HashNinja::HashAttrReader:0x007fa05387b748 @hash={:full_name=>{:first_name=>"Linus", :last_name=>"Torvalds"}}>
name_attr.full_name.first_name.should eq('Linus')
name_attr.full_name.last_name.should eq('Torvalds')