Broadcast

app/controllers/messages_controller.rb

@@ -8,6 +8,9 @@ def create
     @message = Message.new(params.require(:message).permit(:body))
     respond_to do |format|
       if @message.save
+        # Broadcast to the "messages_channel" channel (asynchronous)
+        @message.broadcast_prepend_later_to("messages_channel")
+
         format.html { redirect_to messages_url }
         format.turbo_stream
       else

app/models/message.rb

@@ -1,3 +1,7 @@
 class Message < ApplicationRecord
   validates :body, presence: true
+  # To broadcast in a model callback, write the following
+  # after_create_commit -> { broadcast_prepend_to("messages_channel", partial: "messages/message") }  # Specify a partial template
+  # after_create_commit -> { broadcast_prepend_later_to("messages_channel") } # Broadcast asynchronously using ActiveJob.
+  # after_create_commit -> { broadcast_prepend_to("messages_channel") }
 end

app/views/messages/create.turbo_stream.erb

@@ -3,7 +3,3 @@
     <%= render partial: "form", locals: { form: form } %>
   <% end %>
 <% end %>
-
-<%= turbo_stream.prepend "messages" do %>
-  <%= render @message %>
-<% end %>

app/views/messages/index.html.erb

@@ -13,4 +13,5 @@
   </div>
 </div>
 
-<%#= turbo_stream_from "messages"  %>
+<%#= Subscribe to the "messages_channel" channel %>
+<%= turbo_stream_from "messages_channel"  %>