Ruby on rails Rails自引用有很多关联

使用RubyonRails，我想我需要创建一个自我引用，它与中文中的单词模型有很多关联

背景：

每个单词都是由多个成分组成的复合词

例如，如果我有三个词‘ni’、‘hao’和‘nihao’，我希望能够做到：

nihao.components=['ni'，'hao']

和

'ni'.composites=['nihao']

'hao'.composites=['nihao']

我不认为这应该是一个等级关联（我见过几个宝石…），因为一个单词没有1或2个“父”，它有0、1或数百个“复合”。同样，一个单词有0、1或几个“成分”

我试过：

class Word < ActiveRecord::Base
  has_many :relationships
  has_many :components, through: :relationships, foreign_key: :component_id
  has_many :composites, through: :relationships, foreign_key: :composite_id
end

class Relationship < ActiveRecord::Base
  belongs_to :component, class_name: "Word"
  belongs_to :composite, class_name: "Word"
end

---

试试这个，你没有为这种用例正确地关联你的模型

class Word < ActiveRecord::Base
  has_many :component_relationships, class_name: 'Relationship', foreign_key: :composite_id
  has_many :composite_relationships, class_name: 'Relationship', foreign_key: :component_id

  has_many :components, through: :component_relationships
  has_many :composites, through: :composite_relationships
end 

class Relationship < ActiveRecord::Base
  belongs_to :component, class_name: "Word", foreign_key: :component_id
  belongs_to :composite, class_name: "Word", foreign_key: :composite_id
end

classword

---

我没有试过这个，但这个应该有用

您可以添加这两个模型的模式吗@DanielThanks@AakashGupta，我在原始问题中添加了模式（不知道如何在注释中添加代码块！），谢谢！工作完美。

create_table "relationships", force: :cascade do |t|
    t.integer "component_id"
    t.integer "composite_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

  create_table "words", force: :cascade do |t|
    t.string "characters"
    t.string "pinyin"
    t.string "opinyin"
    t.string "tpinyin"
    t.string "english"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

class Word < ActiveRecord::Base
  has_many :component_relationships, class_name: 'Relationship', foreign_key: :composite_id
  has_many :composite_relationships, class_name: 'Relationship', foreign_key: :component_id

  has_many :components, through: :component_relationships
  has_many :composites, through: :composite_relationships
end 

class Relationship < ActiveRecord::Base
  belongs_to :component, class_name: "Word", foreign_key: :component_id
  belongs_to :composite, class_name: "Word", foreign_key: :composite_id
end