Pull out new_comment_placeholder helper

app/helpers/comments_helper.rb

@@ -3,4 +3,12 @@ module CommentsHelper
     tag.div id: dom_id(comment), class: "comment flex align-start full-width",
       data: { creator_id: comment.creator_id, created_by_current_user_target: "creation" }, &
   end
+
+  def new_comment_placeholder(bubble)
+    if bubble.creator == Current.user && bubble.messages.comments.empty?
+      "Add some notes…"
+    else
+      "Type your comment…"
+    end
+  end
 end

app/views/comments/_new.html.erb

@@ -7,14 +7,12 @@
     </div>
     <div class="comment__body txt-align-start margin-block-start-half">
       <%= form_with model: Comment.new, url: bucket_bubble_comments_path(bubble.bucket, bubble), class: "flex flex-column gap full-width", data: { controller: "form", action: "keydown.meta+enter->form#submit" } do |form| %>
-        <%= form.text_area :body, class: "input", required: true, rows: 4,
-              placeholder: (bubble.messages.comments.empty? && bubble.creator == Current.user) ? "Add some notes…" : "Type your comment…" %>
-
-      <%= form.button class: "btn btn--reversed center" do %>
-        <%= image_tag "check.svg", aria: { hidden: "true" }, size: 24 %>
-        <span class="for-screen-reader">Save</span>
+        <%= form.text_area :body, class: "input", required: true, rows: 4, placeholder: new_comment_placeholder(bubble) %>
+        <%= form.button class: "btn btn--reversed center" do %>
+          <%= image_tag "check.svg", aria: { hidden: "true" }, size: 24 %>
+          <span class="for-screen-reader">Save</span>
+        <% end %>
       <% end %>
-    <% end %>
     </div>
   </div>
 </div>