Rails多态关联accepted_nested_attributes

Question

I currently a polymorphic association set up like this

class Reading < ApplicationRecord
   has_one :audio, as: :audioable
   accepts_nested_attributes_for :audio
end

class Audio < ApplicationRecord
   belongs_to :audioable, polymorphic: true
end

In my RSPEC test, I have this set up

@reading = attributes_for(:reading, creator: @user, body: "who let the dogs out? Must be me\n\nMeMeMe")
@reading[:audio_attributes] = attributes_for(:audio)

However, I get the following errors when posting this @reading to the reading#create controller

{:errors=>{:"audio.audioable"=>["must exist"]}}

For non-polymorphic associations I've gotten it to create both the parent and nested resources using inverse_of but I'm not sure how to do it for polymorphic associations.

Answer 1

inverse_of不能用于多态关联，你看过Single Table Inheritance它可能是一个很好的解决方案，取决于你想要实现的目标