Error not displaying with form_with - ruby-on-rails

Question

Good Morning.
I'm following the tutorial http://edgeguides.rubyonrails.org/getting_started.html and I find the following:
I have a controller called ArticlesController. The create method uses the "if # article.save" statement to save the #article object, and if something goes wrong then render 'new'. Similarly the update method uses "if #article.update (article_params)" to update the record for that article, and if something goes wrong render 'edit'.
In new and edit views <% if # article.errors.any? %> is used to determine if there was any error and display the corresponding message, but the problem is that in the new view works fine, but in the edit view #article.errors.any view? returns false even if there is an error.
Can someone tell me what's wrong. Thank you very much.
Then I put the ArticlesController class, the views new.html.erb and edit.html.erb, and the article model.
class ArticlesController < ApplicationController
def new
#article = Article.new
end
def edit
#article = Article.find(params[:id])
end
def update
#article = Article.find(params[:id])
if #article.update(article_params)
redirect_to #article
else
render 'edit'
end
end
def index
#articles = Article.all
end
def show
#article = Article.find(params[:id])
end
def create
#article = Article.new(article_params)
if #article.save
redirect_to #article
else
render 'new'
end
end
private
def article_params
params.require(:article).permit(:title, :text)
end
end
------------------------------------------------------------------
<h1>New Article</h1>
<%= form_with scope: :article, url: articles_path, local: true do |form| %>
<% if #article.errors.any? %>
<div id="error_explanation">
<h2>
<%= pluralize(#article.errors.count, "error") %> prohibited
this article from being saved:
</h2>
<ul>
<% #article.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<p>
<%= form.label :title %><br>
<%= form.text_field :title %>
</p>
<p>
<%= form.label :text %><br>
<%= form.text_area :text %>
</p>
<p>
<%= form.submit %>
</p>
<% end %>
<%= link_to 'Back', articles_path %>
----------------------------------------------------------------------
<h1>Edit article</h1>
<%= form_with(model: #article) do |form| %>
<% if #article.errors.any? %>
<div id="error_explanation">
<h2>
<%= pluralize(#article.errors.count, "error") %> prohibited
this article from being saved:
</h2>
<ul>
<% #article.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<p>
<%= form.label :title %><br>
<%= form.text_field :title %>
</p>
<p>
<%= form.label :text %><br>
<%= form.text_area :text %>
</p>
<p>
<%= form.submit %>
</p>
<% end %>
<%= link_to 'Back', articles_path %>
---------------------------------------------------------------------
class Article < ApplicationRecord
validates :title, presence: true,
length: { minimum: 5 }
validates :text, presence: true
end

Answer 1

All forms generated by form_with will be submitted by an XHR (Ajax) request by default. if you want to disable remote forms then you can do it with local like you did in the form in new.html.erb.
change this in your edit.html.erb :
<%= form_with model: #article, local: true do |form| %>

Answer 2

It's a limitation of Turbolinks, which does not work with render
See here https://joey.io/turbolinks-rendering-form-errors/ and here https://github.com/jorgemanrubia/turbolinks_render

Answer 3

Got the same error today. They are using render with form_with in their documentation but it doesn't work.
I used form_for and it fixed the problem.
<%= form_for article do |form| %>