ruby-on-rails - rails6中的单表继承

Question

我有一个与单表继承有关的问题，我从未使用过它，你们能帮帮我吗？

甲板模型

name: string
has_many Content
Content has 2 types: Content::ForTerm / Content::ForPhrase
Content::ForTerm has many Term
Content::ForPhrase has many Phrase

术语模型：

id, word, meaning, reading

短语模型：

id, sentence

标签： ruby-on-railsruby

Answer 1

创建一个模型类，其类名为 Content，另外两个子类为 Term 和 Phrase，必须从类 Content 继承

语法是

# app/models/Content.rb
class Content < ApplicationRecord    
  #your code    
end

# app/models/term.rb
class Term < Content    
  #your code    
end

# app/models/phrase.rb
class Phrase < Content    
  #your code    
end