Compressed fields in Mongoid

compressed.rb

require 'zlib'

module Mongoid
  module Fields
    module Compressed
      extend ActiveSupport::Concern

      class Field
        include Mongoid::Fields::Serializable

        def deserialize(object)
          Zlib::Inflate.inflate(object.to_s)
        end

        def serialize(object)
          BSON::Binary.new(Zlib::Deflate.deflate(object.to_s))
        end
      end

      module ClassMethods
        def compressed_field(name, options = {})
          field(name, options.merge(type: Mongoid::Fields::Compressed::Field))
        end
      end

    end
  end
end

Hey, thanks for this! I just made a more recent version compatible with Mongoid 6.4 in case anyone's looking for this: https://gist.github.com/jarthod/6c7ddbea1c47b9ca5f159b6c28f81374