gem 'eyra'

class MovieSerializer
  include Eyra
  
  field :title,type: String
  field :year,type: Integer
  
  dump_format :year_in_hex do
    year.to_i.to_s(16)
  end
end

MovieSerialize.new(@movie).to_json # { movie: 'The fight club', year: 1999,year_in_hex: "7cf" }