vidpush/app/views/layouts/_header.html.erb

<div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
  <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="/"><%= image_tag asset_path("/assets/favicon.png"), size: "32x32" %> VidPush</a>
    </div>
    <div class="navbar-collapse collapse">
      <ul class="nav navbar-nav navbar-right">
        <% if admin_signed_in? %>
            <li><%= link_to "Edit Users", accounts_path %></li>
        <% else %>
            <% if user_signed_in? %>
              <li><%= link_to "Login as Admin", new_admin_session_path %></li>
            <% end %>
        <% end %>
        <% if user_signed_in? %>
            <li><%= link_to "Profile", edit_user_registration_path %></li>
            <li><%= link_to "Logout", destroy_user_session_path, :method => :delete %></li>
        <% else %>
            <li><%= link_to "Sign in", new_user_session_path %></li>
        <% end %>
      </ul>
    </div>
  </div>
</div>