app/views/articles/form/_form.html.erb
<div class="content">
<div class="masthead">
<div class="row">
<div class="info">
<h2><%= title %></h2>
</div>
</div>
</div>
<div class="sub-nav">
<div class="row">
<ul class='tabs'>
<li data-tab='tab-details' class="active">Details</li>
<% if article.notebook_url.blank? %>
<li data-tab='tab-content'>Content</li>
<% end %>
</ul>
</div>
</div>
<div id='tab-details' class='tab-content active'>
<%= render partial: 'articles/form/details', locals: { article: article } %>
</div>
<% if article.notebook_url.blank? && article.persisted? %>
<div id='tab-content' class='tab-content'>
<%= render partial: 'articles/form/content', locals: { article: article } %>
</div>
<% end %>
<% if policy(article).destroy? %>
<div class="additional">
<div class="row">
<a data-remodal-target="modal">Delete tutorial</a>
</div>
</div>
<% end %>
</div>