<% if logged_in? %>

You are logged in, <%= current_user.email %>

<%= link_to 'Logout', '/logout', method: :get, class: 'btn' %> <% else %>

You are not logged in

<%= link_to 'Login', '/login', method: :get, class: 'btn' %> <%= link_to 'Sign Up', '/users/new', method: :get, class: 'btn' %> <% end %>