class Geocoder::Result::Ipregistry

def flatten_hash(hash) 

def flatten_hash(hash)
  hash.each_with_object({}) do |(k, v), h|
    if v.is_a? Hash
      flatten_hash(v).map do |h_k, h_v|
        h["#{k}_#{h_k}".to_s] = h_v
      end
    else
      h[k] = v
    end
  end
end