<% if article.previous_article %>
<%= link_to article.previous_article do %>
<%= icon 'arrow-left' %>
<%= article.previous_article %>
<% end %>
<% end %>
<% if article.next_article %>
<%= link_to article.next_article do %>
<%= article.next_article %>
<%= icon 'arrow-right' %>
<% end %>
<% end %>