blg.1-5

gistfile1.html.erb

<div class="container">
  <h3><%= link_to "Add picture", new_picture_path %></h3>
  <% @pictures.each do |picture| %>
    <div class = "picture" data-id = "<%= picture.id %>">
      <%= image_tag(picture.file.url(:medium)) %>
    </div>
  <% end %>
</div>