How to set up a form for nested resources in Ruby on Rails 5.2.1 using form_with?

Question

Ruby on Rails

For nested resources in route.rb like

resources :parent, shallow: true do
   resources :child
end

Previously, a form of type form_for was used , where it was possible to specify the names of the parent model first, and then the child :
<%= form_for [@parent, @child] do |form| %>

<%= form_with(model: child, local: true) do |form| %>

Answer 1

<%= form_with(model: [@parent, @child], local: true) do |form| %>