Compressed Event Data

app_models_event.rb

class Event < ApplicationRecord
  attribute :event_data, :gzip_string
end

config_initializers_gzip_string_field.rb

class GzipStringType < ActiveRecord::Type::Binary
  def serialize(value)
    return super if value.nil?
    
    super ActiveSupport::Gzip.compress(value.to_s)
  end
  
  def deserialize(value)
    super decompress(value)
  end
  
  private
  
  def decompress(value)
    case value
      when NilClass
        nil
      when ActiveModel::Type::Binary::Data
        ActiveSupport::Gzip.decompress(value.to_s)
      else
        ActiveSupport::Gzip.decompress(PG::Connection.unescape_bytea(value))
    end
  end
end

ActiveRecord::Type.register(:gzip_string, GzipStringType)