Add specs for editor in nested resources

spec/dummy/app/models/author.rb

@@ -12,6 +12,7 @@ class Author < ApplicationRecord
   has_one_attached :avatar
 
   accepts_nested_attributes_for :profile, allow_destroy: true
+  accepts_nested_attributes_for :posts, allow_destroy: true
 
   validates :email, format: { with: /\A[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\z/i, message: 'Invalid email' }