I am trying to replicate the turbo_stream custom delivery method but run into an issue with action view (unknown local: :notification)

[tkhobbes]

Hi all I am trying to replicate the "turbo_stream" custom delivery method. I have basically copied everything 1:1 from the example given. But my background job fails with an error message "ActionView::Template::Error: unknown local: :notification". I am kind of lost on where to start debugging.

Here are the main pieces of code that I think matter:

1. the turbo_stream delivery method (app/notifiers/delivery_methods/turbo_stream.rb):

module DeliveryMethods
  class TurboStream < ApplicationDeliveryMethod
    def deliver
      return unless recipient.is_a?(User)

      notification.update_public_notifications
    end
  end
end

2. The notification extension (app/models/concerns/noticed/notification_extensions.rb):
   module Noticed

  module NotificationExtensions
    extend ActiveSupport::Concern

    def update_public_notifications
      broadcast_update_to(
        :public_notifications,
        target: 'notification_bell',
        partial: 'shared/notification_bell',
        locals: { user: recipient }
      )
    end
  end
end

3. The notifier that uses the turbo_stream delivery method (app/notifiers/add_roles_notifier.rb):

class AddRolesNotifier < ApplicationNotifier
  deliver_by :turbo_stream, class: 'DeliveryMethods::TurboStream'

  notification_methods do
    # output the notification message
    def message
      "#{record.name}: #{params[:message]}"
    end

    def my_record_path
      "#{record.class.name.pluralize.downcase}/#{record.id}"
    end
  end

  required_param :message
end

4. The place in the code where I subscribe to the turbo_stream:

      <%= turbo_stream_from :public_notifications %>
      <%= turbo_frame_tag :notification_bell do %>
        <%= render 'shared/notification_bell', user: current_user %>
      <% end %>

5. The (simple) template that shall be changed (app/views/shared/_notification_bell.html.erb):

<%# locals: (user:) %>
<li class="p-05 bg-hover-primary">
  <%= link_to notifications_path, target: '_top' do %>
    <% if user.notifications.present? %>
      <%= inline_svg_tag('bell_full.svg', class: 'svg_width_15') %>
    <% else %>
      <%= inline_svg_tag('bell.svg', class: 'svg_width_15') %>
    <% end %>
  <% end %>
</li>

Any help is greatly appreciated!