<p>
  <%= image_tag 'http://www.gravatar.com/avatar/' + Digest::MD5.hexdigest(@user.email) + '?s=100&d=mm' %>
</p>

<p>
  <strong>Name:</strong>
  <%= @user.name %>
</p>

<p>
  <strong>Email:</strong>
  <%= @user.email %>
</p>

<p>
  <strong>User name:</strong>
  <%= @user.user_name %>
</p>

<%= link_to 'Edit', edit_user_path(@user) %> |
<%= link_to 'Users', users_path %>