TurboStreams Guide Failure

1

I’m trying to learn TurboStreams following this simple Hotwire Guide but the page doesn’t update after I add an entry in the console unless I refresh the browser.

Redis is running:

$ redis-cli -p 6379 ping
PONG

The default Gemfile had redis commented out, so I enabled it:

# Use Redis adapter to run Action Cable in production
gem "redis", "~> 4.0"

I thought cable.yml might be the problem, so I added redis to the development section, but it didn’t seem to make a difference.

development:
  adapter: redis
  url: redis://localhost:6379/1

test:
  adapter: test

production:
  adapter: redis
  url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
  channel_prefix: simple_hotwire_production

On create, my bin/dev log message looks like the one in the post, but it comes out in the rails console window rather than the server window.

On Post.destroy_all, my bin/dev log message is different than than the one in the post:

[ActionCable] Broadcasting to posts: "<turbo-stream action=\"remove\" target=\"post_11\"></turbo-stream>"

My turbo-cable-stream-source looks the same as the blog post, but without the connected=“” property:

<turbo-cable-stream-source channel="Turbo::StreamsChannel" signed-stream-name="InBvc3RzIg==--7b2eb3d475ba281629a0bb2229d5f2dc13c50febb0fcb311775484a89454a55b"></turbo-cable-stream-source>

My turbo frame output looks the same:

<turbo-frame id="post_11">..</turbo-frame>
<turbo-frame id="post_12">..</turbo-frame>

Here’s the code:

# Procfile.dev
web: bin/rails server -p 3000
css: bin/rails tailwindcss:watch
redis: redis-server

# posts_controller.rb
class PostsController < ApplicationController
  def index
    @posts = Post.all
  end
end

# post.rb
class Post < ApplicationRecord
    broadcasts_to -> (post) { :posts }
end

# index.html.erb
<div>
  <h1 class="font-bold text-4xl">Posts#index</h1>
  <p>Find me in app/views/posts/index.html.erb</p>

  <%= turbo_stream_from :posts %>
  <div id="posts">
    <%= render @posts %>
  </div>
</div>

# _post.html.erb
<%= turbo_frame_tag dom_id(post) do %>
  <div class="border flex-col mt-2">
    <%= post.title %>
    <%= post.article %>
  </div>
<% end %>

Can anyone see what I’m missing or give me an idea of how to debug it?

2

Redis doesn’t show any activity when adding new posts from the rails console:

$ redis-cli monitor
OK

irb(main):003:0> Post.create(title: 'hello', article: 'test')

But it does if I add a key-value directly from the command line:

$ redis-cli monitor
OK
1689983297.790074 [0 127.0.0.1:60190] "SET" "key0" "value0"

$ redis-cli SET "key0" "value0"

So Redis works, but maybe Rails is not able to send data to Redis for some reason.

3

Fixed by switching from asdf to rtx for version management and upgrading Ruby to 3.2.2p53 and Rails to 7.0.6.

1 Like
4

Hey, Harrison here (I wrote the original post on RailsNotes).

Just wanted to say that I’m glad you solved your problem. Let me know if you have any others!

1 Like