Find key/value pairs deep inside a hash containing an arbitrary number of nested hashes and arrays

Question

A web service is returning a hash that contains an unknown number of nested hashes, some of which contain an array, which in turn contains an unknown number of nested hashes

Answer 1

I use the following code

def search_hash(hash, key)
  return hash[key] if hash.assoc(key)
  hash.delete_if{|key, value| value.class != Hash}
  new_hash = Hash.new
  hash.each_value {|values| new_hash.merge!(values)}
  unless new_hash.empty?
    search_hash(new_hash, key)
  end
end