错误消息:未定义#<GymClass:0x000000000d696c18>的方法‘`create’您的意思是？created_at。尝试使用策略设计模式

class GymClassStrategy
  def execute
    raise NotImplementedError, "Subclasses must implement execute method"
  end
end

class CreateStrategy < GymClassStrategy
  def execute
    # 实现创建逻辑
  end
end

class CreatedAtStrategy < GymClassStrategy
  def execute
    # 实现获取创建时间逻辑
  end
end

class GymClass
  def initialize(strategy)
    @strategy = strategy
  end

  def perform_action
    @strategy.execute
  end
end

gym_class = GymClass.new(CreateStrategy.new)
gym_class.perform_action

gym_class = GymClass.new(CreatedAtStrategy.new)
gym_class.perform_action