Deep Stringify Keys of hash even with embedded arrays

stringify_keys.rb

def transform_hash(original, options={}, &block)
  original.inject({}){|result, (key,value)|
    value = if (options[:deep] && Hash === value) 
              transform_hash(value, options, &block)
            else 
              if Array === value
                value.map{|v| transform_hash(v, options, &block)}
              else
                value
              end
            end
    block.call(result,key,value)
    result
  }
end

# Convert keys to strings
def stringify_keys(hash)
  transform_hash(hash) {|hash, key, value|
    hash[key.to_s] = value
  }
end

# Convert keys to strings, recursively
def deep_stringify_keys(hash)
  transform_hash(hash, :deep => true) {|hash, key, value|
    hash[key.to_s] = value
  }
end


h1 = {a: {b: "c", d: [{a: "test", b: "test 2"},{a: "test 3"}]}}
puts h1 
puts stringify_keys(h1)
puts deep_stringify_keys(h1)

I was trying to do this today, and I was pretty excited about my solution:

require 'json'

h1 = {a: {b: "c", d: [{a: "test", b: "test 2"},{a: "test 3"}]}}

puts JSON[h1.to_json]
=> {"a"=>{"b"=>"c", "d"=>[{"a"=>"test", "b"=>"test 2"}, {"a"=>"test 3"}]}}

So great!!!! thanks :)