Question

我正试图在我的导航中的按钮中显示当前用户名称, 如果它们被签名的话。我将不使用 Home 控制器来做任何操作, 为什么它要定义名称? 任何涉及其它控制器的页面在试图在导航中创建用户时都会出错。 @ info: whatsthis

NoMethodError in Home#index

Showing /Users/nelsonkeating/Desktop/ReminDeal/app/views/layouts/_navigation.html.erb where line #10 raised:

undefined method `name  for nil:NilClass
Extracted source (around line #10):

7: <% if user_signed_in? %>
8:  <div class="logout1">
9:      <div class="btn-group">
10:             <button class="btn"><Action> <%= @user.name %> </button>
11:             <button class="btn dropdown-toggle" data-toggle="dropdown">
12:                 <span class="caret"></span>
13:             </button> 
              <ul class="dropdown-menu">
            <li><%= link_to  Logout , destroy_user_session_path, :method=> delete  %></li>
            <li><%= link_to  My Account , edit_user_path(current_user.id)  %></li>
            <li><%= link_to "Help", help_path %></li>
        </ul>
    </div>
</div>
</li>

Answer 1

Have you declared the @user in the controller? Try changing the line 10 to:

  <button class="btn"><Action> <%= current_user.name %> </button>

Answer 2

我发现另一条线在堆积流中, 它看起来是一样的问题:

< a href=" "https://stackoverflow.com/ questions/416484/devise-nomethod-error-user-sign-in" > Devise: noMethod 错误 & amp; 用户_tign_in

您似乎错过了在您的用户模型中设计: database_ conticaticable 的呼叫。

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