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我对使用设计注册的错误消息有疑问。在我的自定义设计控制器中，我有 create 方法，我将在验证失败时返回资源。由于某种原因，resource.errors 在呈现注册页面时被清除。有没有人遇到过这个问题？我正在使用 dm-devise 2.1.0

如果有帮助，这是我的代码：

class UserDevise::RegistrationsController < Devise::RegistrationsController  
  def create
    begin
      build_resource
      ....    
    rescue DataMapper::SaveFailureError => e
      resource = e.resource
      clean_up_passwords(resource)  
      respond_with resource
    end    
  end
end

编辑：这是所要求的 clean_up_passwords 的代码（它们由设计定义）：

def clean_up_passwords(object)
  object.clean_up_passwords if object.respond_to?(:clean_up_passwords)
end

def clean_up_passwords
  self.password = self.password_confirmation = nil
end

EDIT2：这是注册页面的查看代码：

<div class="account-container">
<div class="content clearfix">
  <%= simple_form_for resource, :html => {:class => 'form-vertical'}, :url => registration_path(resource_name) do |f| %>
  <h1>Create Account</h1>
  <div class="login-fields">
     <p>Please provide the following info:</p>
     <%= f.input :name, :placeholder => "Full Name", :input_html=>{:class => "login username-field"} %>
     <%= f.input :email, :placeholder => "Email Address", :input_html=>{:class => "login username-field"} %>
     <%= f.input :password, :placeholder => "Password", :input_html=>{:class => "login password-field"} %>
     <%= f.input :password_confirmation, :placeholder => "Password Confirmation", :input_html=>{:class => "login password-field"} %>
  </div>    
  <div class="login-actions">
     <%= f.button :submit, "Sign Up", :class => 'button btn  btn-warning btn-large' %>
  </div>
  <% end %>
</div>
</div>
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