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<header>
  <nav class="nav-bar">
    <a href="/">home</a>
    <% if current_user %>
      <form class="button-link" method="post" action="/sessions">
          <input type="hidden" name="_method" value="delete">
          <button id="logout-button" type="submit">Logout</button>
      </form>
    <% else %>
      <a href="/sessions/new">login</a>
      <a href="/users/new">register</a>
    <% end %>
  </nav>
</header>

<a href="/users/new">Register</a>
<a href="/sessions/new">Login</a>

<a href="/users/<%= session[:user_id] %>"><%= display_name %></a>
<form action="/sessions" method="post">
  <input type="hidden" name="_method" value="delete">
  <input type="submit" value="Logout">
</form>

<% if @errors %>
  <% @errors.each do |error| %>
    <span class="error"><%= error %></span>
  <% end %>
<% end %>

  <p>**************************************</p>
  <p>Params = <%= p params.inspect %></p><br>
  <p>Session = <%= p session.inspect %></p>
  <p>**************************************</p>