ClassCreator.rb

ACTIONS = %i[index get create update]
class BaseClass; end

class ObjectEngine
  attr_reader :item, :schema

  def initialize(item)
    @item = item
    # @schema = item.application.schema
  end

  def process
    Class.new(BaseClass) do
      attr_reader :record

      define_method :initialize do |record|
        @record = record
      end

      # replace ACTIONS with item.schema relation methods

      ACTIONS.each do |action|
        define_method "#{action}" do |filters: nil|
          pp "#{action} =====> #{record}"
        end
      end
    end
  end
end

item = { ok: :cool }
klass = ObjectEngine.new(item).process

ACTIONS.each do |action|
  klass.new(item).send(action)
end