Errors not displaying when rendering edit in Rails 7

Question

My app is running Rails Rails 7.0.2.3

In my update controller action I have the line:

return render(:edit) unless @user_form.save

This renders the edit view on error .... but errors are not displayed.

In my edit view I am defining the form with:

form_for @user_form, url: user_path(@user_form), method: :patch do |f|

The form submits via turbo. I can see the error being added to @user_form.errors in the controller, but the instance of @user_form in the view is not changing on each form submission. If I output @user_form.inspect to the view - the id remains the same on each submission.

I have tried adding remote: false to the form_for call, but this does not seem to have an effect.

The only solution I have found is to add data: { turbo: false } to the form_for call.

Is there a better way of handling this?

Turbolinks causes all sorts of problems and I long ago stripped it out of my Rails apps. (Which isn't very helpful to you, I know!) The problem sounds like a typical Turbolinks caching issue - it tries to minimise changes to the page to speed page renders, but it does make mistakes when detecting what needs to change. One option might be to create a new instance variable in the controller called @errors or similar, and to reference the errors there? — JohnP
– JohnP, Commented Mar 30, 2022 at 11:29

George Yacoub · Accepted Answer · 2023-03-14 20:08:57Z

5

You need to render with status: :unprocessable_entity. I think the change in status invalidates the cache.

so change your code to:

return render(:edit, status: :unprocessable_entity) unless @user_form.save

answered Mar 14, 2023 at 20:08

George Yacoub

1,4761 gold badge12 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

ReggieB Over a year ago

Yes - I'm sure this is the correct solution

Matt Budz · Accepted Answer · 2022-03-31 17:24:23Z

0

you'll want to use a partial to show the errors.

you'll need to add an update.turbo_stream.erb file to this view's directory. In that file have something like:

<%= turbo_stream.update 'id_of_div_where_you_want_to_show_errors' do %>
   <%= render partial: 'partial_that_displays_errors' %>
<% end %>

or your controllers update action you'll want to have something like

respond_to do |format|
  format.turbo_stream { turbo_stream.update 'id_of_div_where_you_want_to_show_errors', render partial: 'partial_that_displays_errors' %>
end

Treat all this more like pseudocode and apply it to your own app, it's hard to say what's going on without seeing your code.

answered Mar 31, 2022 at 17:24

Matt Budz

2554 silver badges13 bronze badges

Collectives™ on Stack Overflow

Errors not displaying when rendering edit in Rails 7

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related