app/views/comments/_list.html.erb
<div id="comments" class="comments" data-components='comments'>
<% if logged_in? && !edit_mode? %>
<%= form_tag url_for([object, :comments]), method: :post, id: "comment-form",
remote: true, "data-components" => "remoteForm" do %>
<div class="field">
<textarea id="comment_comment" class="comment_input tinymce" name="comment[comment]"
data-components="editor" data-editor-options='{"height":70}' >
</textarea>
</div>
<%= submit_tag 'Add comment' %>
<% end %>
<ul id="comments-list" class="comments-list">
<%= render comments %>
</ul>
<% else %>
<% if comments.empty? %>
<p class="empty"><%= t 'comments.empty', {name: object.name} %></p>
<% else %>
<ul id="comments-list" class="comments-list">
<%= render comments %>
</ul>
<% end %>
<% end %>
</div>