使用ruby on rails登录时，在导航栏上显示用户名

Question

I want to be able to replace Accounts tab on my navigation bar with the User's name when they logged in. How would i go about doing that. Would i have to use some sort of embedded ruby like <%= @user.name %>

heres the html

   enter code here

<header class="navbar navbar-fixed-top">
  <div class="navbar-inner">
    <div class="container">
      <%= link_to "sample app", root_path, id: "logo" %> 
      <nav>
        <ul class="nav pull-right">
          <li><%= link_to "Home", root_path %></li> 
          <li><%= link_to "Help", help_path %></li> 
          <% if signed_in? %>
          <li><%= link_to "Users", '#' %></li> 
          <li id="fat-menu" class="dropdown">
            <a href="#" class="dropdown-toggle" data-toggle="dropdown">
               Account
              <b class="caret"></b>
            </a>
            <ul class="dropdown-menu">
              <li><%= link_to "Profile", user_path(current_user) %></li> 
              <li><%= link_to "Settings", '#' %></li>
              <li class="divider"></li>
              <li>
                <%= link_to "Sign out", signout_path, method: 'delete' %> 
              </li>
            </ul> 
          </li>
        <% else %>
          <li><%= link_to "Sign in", signin_path %></li>
        <% end %> 
       </ul>
      </nav>
    </div>
  </div>
</header>

Answer 1

尝试：

<%= current_user.name %>

Answer 2

@RickyAhn, check this video http://railscasts.com/episodes/250-authentication-from-scratch

I taked it as example to do log-in page