通过导航栏链接导轨4设计登录并注册提交按钮被禁用

Question

当我尝试通过导航栏链接访问这两个表单时，我的设计表单的注册按钮和登录按钮被禁用。要工作，我需要刷新表单。有帮助吗？提前致谢

<div class="panel panel-default form-signin col-md-offset-2">

<div class="panel-heading">
<h2 class="panel-title">Sign in</h2>
</div>
<div class="panel-body">
<%= simple_form_for(resource, defaults: { input_html: { class: 'form-control' } }, as: resource_name, url: session_path(resource_name)) do |f| %>

<%= f.input :email %>
<%= f.input :password %>

  <% if devise_mapping.rememberable? -%>
 <%= f.check_box :remember_me %> <%= f.label :remember_me %>
  <% end -%>
  </div>


<div class="panel-footer">
<%= f.submit 'Sign in' %> 
<% end %>
</div>

</div>

</div>

<div class="col-md-offset-2">
<%= render "devise/shared/links" %>
</div>