module Jets::Mega::HashConverter

def self.append_key(root_key, key)
  root_key.nil? ? :"#{key}" : :"#{root_key}[#{key.to_s}]"
end

def self.encode(value, key = nil, out_hash = {})
  case value
  when Hash  then
    value.each { |k,v| encode(v, append_key(key,k), out_hash) }
    out_hash
  when Array then
    value.each { |v| encode(v, "#{key}[]", out_hash) }
    out_hash
  when nil   then ''
  else
    out_hash[key] = value
    out_hash
  end
end