pokemon-couture/lib/pokemon_couture_web/templates/layout/_user_menu.html.eex

<ul>
<%= if @current_user do %>
  <li><b>Current user:</b> <%= @current_user.username %></li>
  <li><%= link "Settings", to: Routes.user_settings_path(@conn, :edit) %></li>
  <li><%= link "Log out", to: Routes.user_session_path(@conn, :delete), method: :delete %></li>
<% else %>
  <li><%= link "Register", to: Routes.user_registration_path(@conn, :new) %></li>
  <li><%= link "Log in", to: Routes.user_session_path(@conn, :new) %></li>
<% end %>
</ul>