def to_hash
      index_hash = Hash.new
      self.each do |space|
        index_hash[space.wiki_name] = space.to_s
      end
      index_hash
    end
def to_hash
      index_hash = Hash.new
      self.each do |space|
        index_hash[space.wiki_name] = space.to_s
      end
      index_hash
    end
Transform the ruby obj ->  to a Hash