interactor_with_before_hook.rb

module InteractorValidations
  def self.included(base)
    base.extend ClassMethods
  end
 
 
  module ClassMethods
    def requires(*attributes)
      before do
        attributes.each do |attribute|
          raise ArgumentError.new("Required attribute #{attribute} is missing") if context.public_send(attribute).nil?
        end
      end
    end
  end
end
 
 
class MyInteractor
  include Interactor
  include InteractorValidations
 
 
  requires :email, :name
  # or
  # requires :email
  # requires :name
 
 
  def call
    # ...
  end
end