<%= simple_form_for(@article) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.input :article %>
    <div class="form-group">
      <%= f.input :article_body, input_html: { class: 'summernote' } %>
    </div>
    <%= f.input :status, collection: enum_option_pairs(Article, :status) %>
  </div>

  <div class="form-actions">
    <%= f.button :submit %>
  </div>
<% end %>

<%= simple_format(@article.article_body) %>

$(document).ready(function() {
  $('.summernote').summernote({
    height: 120
   });
 });

$(document).ready(function() {
  $('.summernote').summernote({
    height: 120
   });

$(".summernote").summernote("code", your server variable to string);

 });

<%= sanitize @course.corps %>