抽象类和子类的最佳ActiveRecord继承策略
试图找出解决这个特定问题的最佳 ActiveRecord 继承策略：
我有一个抽象类，我们将其称为 Message ，具有以下方法/属性。
Message
|- recipient
|- sender
\ body
我有两个子类，
ColorMessage < Message
|- first_color
|- second_color
\ body (returns "#{sender.name} says #{first_color} > #{second_color}")
WeatherMessage < Message
|- current_weather_adverb
\ body (returns "#{sender.name} enjoys #{current_weather_adverb} weather")
我希望能够对所有 Message 运行查询并显示它们的主体，而不必担心它们的具体类型。基本上将 Message 视为一个接口。
我熟悉 STI，在这种情况下这是正确的解决方案吗？
感谢您的帮助！
trying to figure out the best ActiveRecord inheritance strategy for this particular problem:
I have an abstract class, let's call it Message with the following methods/attributes.
Message
|- recipient
|- sender
\ body
And I have two sub classes
ColorMessage < Message
|- first_color
|- second_color
\ body (returns "#{sender.name} says #{first_color} > #{second_color}")
WeatherMessage < Message
|- current_weather_adverb
\ body (returns "#{sender.name} enjoys #{current_weather_adverb} weather")
I'd like to be able to run a query for all Messages and display their bodies without having to worry about their concrete types. Basically treating Message as an interface.
I am familiar with STI, is that the correct solution in this case?
Thanks for your help!
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我认为这适合单表继承（STI(。
您可以请求 Message.all 或 ColorMessage.all，rails 将为您处理对象转换。
I consider this an appropriate use for single-table-inheritance (STI(.
You can ask for Message.all or ColorMessage.all and rails will take care of the object casting for you.