union-ruby.rb

class Types::ResultType < Types::BaseUnion
  possible_types Types::CharacterType, Types::LandType, Types::BuildingType
  
  # Optional: if this method is defined, it will override `Schema.resolve_type`
  def self.resolve_type(object, context)
    if object.is_a?(Character)
      Types::CharacterType
    elsif object.is_a?(Land)
      Types::LandType
    else
      Types::BuildingType
    end
  end
end