Question

我正在使用Rails 4.2.7。我的模型验证规则

class MyObjectTime < ActiveRecord::Base

  validates :time_in_ms, numericality: { greater_than: 0 }

我想编写自定义错误消息，所以在我的config / locales / en.yml文件中我包含了

en:
  activerecord:
    attributes:
      my_object:
        name: "Name"
      my_object_time:
        time_in_ms: "Time"
    errors:
      models:
        my_object_time:
          attributes:
            time_in_ms:
              not_a_number: "This field must be a number greater than zero."
              blank: "This field must be a number greater than zero."

但是当我的对象无法验证时，我的@ my_object_time.errors.full_messages数组中不包含此自定义错误消息。相反，包括的是

Must be greater than 0

在配置文件中写入的正确规则是什么，以便我可以自定义此错误消息？

Answer 1

您可以直接在模型中自定义消息。

template<typename F, typename... Tail>
auto measureAndExecute(F f, Tail&&... tail) -> typename std::result_of<F(Tail&&...)>::type {  
  std::chrono::high_resolution_clock::time_point time1 = std::chrono::high_resolution_clock::now();
  auto res = f(std::forward<Tail>(tail)...);
  std::chrono::high_resolution_clock::time_point time2 = std::chrono::high_resolution_clock::now();
  auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(time2 - time1).count();
  std::cout << duration << " milliseconds" << std::endl;
  return res;
}

或在class MyObjectTime < ActiveRecord::Base validates :time_in_ms, numericality: { greater_than: 0 }, message: 'my customized message.' end文件中，您需要为en.yml

添加消息

greater_than:

在RoR中，如何自定义设置为大于零的数值的验证错误消息？

1 个答案: