Ruby on rails 未定义的方法'downcase'；对于0:Deviate中的Fixnum

我在提交注册信息时出现以下错误：

   NoMethodError in Devise::RegistrationsController#create

undefined method `downcase!' for 0:Fixnum

\livu_pamatskola\app\views\designe\registrations\new.html.erb：

<h1>Reģistrācija</h1>

<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
  <%= devise_error_messages! %>

<div id="contacts">
    <div id="title"><%= f.label "Vārds" %></div>
    <div id="information"><%= f.text_field :name %></div>
    <div style="clear: both;"></div>
    <div id="title"><%= f.label "Uzvārds" %></div>
    <div id="information"><%= f.text_field :surname %></div>
    <div style="clear: both;"></div>
    <div id="title"><%= f.label "E-pasts" %></div>
    <div id="information"><%= f.text_field :email, :autofocus => true %></div>
    <div style="clear: both;"></div>
    <div id="title"><%= f.label "Parole" %></div>
    <div id="information"><%= f.password_field :password %></div>
    <div style="clear: both;"></div>
    <div id="title"><%= f.label "Vēlreiz parole" %></div>
    <div id="information"><%= f.password_field :password_confirmation %></div>
</div>
    <div><%= f.submit "Reģistrēties", :id => "button-link" %></div>
<% end %>

问题已解决：

当我为Desive创建用户模型时，我在迁移中包含了电子邮件属性。在向用户模型中添加Desive时出现了问题，默认情况下它也会添加电子邮件字段，所以它与我以前的迁移冲突

---

我很高兴我已经解决了这个问题，因为我没有时间处理这些错误。谢谢大家的帮助。

您的用户模型似乎有错误的属性类型。确保数据库包含有效类型的字段。在此处了解更多信息：

---

您的问题可能与已知的不区分大小写的密钥问题有关。将以下代码段添加到config/initializers/designe.rb文件中：

---

注册控制器在设备库中定义，如果将设备添加到GEM文件中，它将自动添加到应用程序控制器。

是否提交某些字段的数字信息？比如用户名是“123”？这可能是Deave的一个问题，如果它将一个数字作为字符串，但认为它实际上是一个数字。

Deave Gem中的控制器不是您的控制器，而是控制器：谢谢您纠正我，但是我在哪里可以找到和编辑此控制器？我不建议编辑Desive控制器，除非您有真正的好理由并且确切知道您正在做什么。但是如何解决此错误？您无法编辑此控制器。它是设计图书馆的一部分。编辑此文件的唯一方法是在github上设计项目，编辑它并将库作为您自己的宝石交付。我建议您修复您的用户模型，您将摆脱此错误。您的问题可能与已知的不区分大小写的密钥问题有关。将以下代码段添加到您的config/initializers/designe.rb文件中：@Konrad从技术上讲，您可以通过创建继承自

designe:：RegistrationsController

的新控制器来编辑控制器，然后只需覆盖您喜欢的任何方法。然后，您必须在

routes.rb

中添加一些行，以使用Deave自述文件中解释的方法指向控制器。默认情况下，此代码段位于config/initializers/designe.rb中。我将接受您的回答，因为您向我展示了正确的方法-数据库中存在问题。谢谢。

“123”。downcase#=>“123”

a=123；a、 唐卡斯！NoMethodError:未定义的方法'downcase！'对于123:fixNu，通过

params

传递的许多信息都是字符串。designe必须在调用

.downcase之前将参数显式转换为
Fixnum
，以便根据您建议的原因获取此错误。
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devise (2.2.1) lib/devise/models/authenticatable.rb:163:in `each'
devise (2.2.1) lib/devise/models/authenticatable.rb:163:in `downcase_keys'
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