app/views/tasks/content/preview/otu_content.html.erb
Preview page: for <%= otu_tag(@otu) -%> <%= link_to 'Show', otu_path(@otu) -%>
<%= form_tag(preview_otu_content_for_layout_path(otu_id: @otu), method: :get, remote: true, id: :otu_page_layout_selector) do -%>
Select a layout: <%= otu_page_layout_select_tag -%>
<%= submit_tag :show -%>
<% end %>
<div id='otu_page_preview'>
</div>