ruby-on-rails - 为什么 inverse_of 不支持多态关联？

Question

来自 Rails Guide :

There are a few limitations to inverse_of support:

• They do not work with :through associations.
• They do not work with polymorphic associations.
• They do not work with :as associations.
• For belongs_to associations, has_many inverse associations are ignored.

Answer 1

这不再是事实。 inverse_of由 through、多态和 belongs_to 支持和 has_many协会。但是 through 不支持自动检测和定义 foreign_key 的关联.
https://guides.rubyonrails.org/association_basics.html#bi-directional-associations