withassociates/slices

<%= form_for [:admin, @snippet],
  html: {multipart: true},
  remote: true do |form| %>
  <div class="fields">
    <label for="snippet_value" class="legend">Value for <em><%= @snippet.key %></em>:</label>
    <%= form.text_area :value %>
  </div>
  <div class="bottom-toolbar">
    <%= form.submit value: 'Save snippet' %>
  </div>
<% end %>