ruby-on-rails - 如何在 rails 中加载这个 yml 文件？

Question

我从一个联系不上的同事那里收到了这个yml数据文件。我需要加载它来获取数据，但我不确定如何:

---
- !ruby/object:Question
  concise_attributes:
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: id
    value_before_type_cast: 1
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: name
    value_before_type_cast: Trip Summary
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: question
    value_before_type_cast: Please state your general feelings about itinerary, the
      group, and the operations. How did it go overall?
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: created_at
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: updated_at
  new_record: false
  active_record_yaml_version: 2
- !ruby/object:Question
  concise_attributes:
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: id
    value_before_type_cast: 2
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: name
    value_before_type_cast: Itinerary
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: question
    value_before_type_cast: Did you and the clients like the itinerary? If not, why
      not? How could it be improved? Was it accurate? Did you make any adjustments
      to the itinerary? Please describe any special things you did on the trip that
      were not part of the itinerary.
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: created_at
  - !ruby/object:ActiveModel::Attribute::FromDatabase
    name: updated_at
  new_record: false
  active_record_yaml_version: 2

我的第一个猜测是使用 yaml_db gem，然后直接使用 YAML::load_file 本身，但我得到了错误:

ArgumentError: undefined class/module Question

即使应用程序中有一个问题模型"

class Question < ActiveRecord::Base
end

Answer 1

它似乎是用 ActiveModel::AttributeSet::YAMLEncoder 编码的.您可以使用decode 方法来解析yaml 文件。 concise_attributes 的使用是 YAMLEncoder 特有的。

Rails Source Code

编辑:当文件在 ActiveModel 下时，要在控制台中加载它，请使用 ActiveRecord::AttributeSet::YAMLEncoder