用户编辑个人资料表格不起作用

Question

我的用户设置页面上有 2 个表单，一个用于所有基本设置，另一个用于个人资料图片。每次我尝试更新用户照片时，都会收到一条错误消息，提示“密码不能为空”，即使密码字段采用不同的形式。

表单的代码：

<%= form_for @user, :html=> { :multipart => true} do |f| %>
  <%= render 'shared/error_messages', :object => f.object %>
 <div class="field">
  <%= f.label :name %><br />
  <%= f.text_field :name %>
 </div>
 <div class="field">
   <%= f.label :email %><br />
   <%= f.text_field :email %>
 </div>
<div class="field">
  <%= f.label :password %><br />
  <%= f.password_field :password %>
</div>
   <div class="field">
     <%= f.label :password_confirmation, "Confirmation" %><br />
   <%= f.password_field :password_confirmation %>
   </div>
  <div class="actions">
      <%= f.submit "Update" %>
  </div>
 <% end %>

  <%= form_for @user, :html=> { :multipart => true} do |f| %>
<%= f.file_field :photo %>
       <br />
     <%= f.submit "Update" %>
  <% end %>

和我的 user.rb 文件：

class User < ActiveRecord::Base

  attr_accessor :password

  attr_accessible :name, :email, :password, :password_confirmation, :photo

    has_attached_file :photo,
                  :styles => {
                  :thumb=> "50x50#",
                  :small  => "220x220>" },
                  :storage => :s3,
                  :s3_credentials => "#{Rails.root}/config/s3.yml",
                  :path => "/:style/:id/:filename"

has_many :microposts, :dependent => :destroy
has_many :relationships, :foreign_key => "follower_id",
                           :dependent => :destroy
has_many :following, :through => :relationships, :source => :followed
has_many :reverse_relationships, :foreign_key => "followed_id",
                                   :class_name => "Relationship",
                                   :dependent => :destroy
has_many :followers, :through => :reverse_relationships, :source => :follower

   email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

   validates :name,  :presence => true,
                :length   => { :maximum => 50 }
   validates :email, :presence   => true,
                :format     => { :with => email_regex },
                :uniqueness => { :case_sensitive => false }

   validates :password, :presence     => true,
                                       :confirmation => true,
                                       :length       => { :within => 6..40 }

                                        before_save :encrypt_password

非常感谢任何帮助！

Answer 1

然后，您需要检查密码字段是否为空，然后忽略验证，如果用户在其中填写了任何内容，则应检查它，如果是在创建新记录时，则应始终检查它。

所以，我想说，它应该是这样的：

validates :password, :presence     => true,
                                       :if => :validate_password?,
                                       :confirmation => true,
                                       :length       => { :within => 6..40 }

def validate_password?
  if new_record?
    return true
  else
    if password.to_s.empty?
      return false
    else
      return true
    end
  end
end

同时更新方法 encrypt_password，只需添加这个初始代码

def encrypt_password
  return if password.to_s.empty?
  ...
  ... existing code
  ... 
end

Answer 2

问题在于您对虚拟密码属性的存在验证。

添加 :on => create 将在您更新用户时停止触发验证。

尝试一下

validates_length_of       :password, :length => { :within => 6..40 }, :allow_blank => true
validates_confirmation_of :password
validates_presence_of     :password, :on => :create

这里有一个不错的 Rails 演员表：
http://railscasts.com/episodes/250-authentication-from-scratch

Answer 3

只需使用以下内容编辑密码验证即可：

validates :password, :presence     => true,
                                       :on => :create,
                                       :confirmation => true,
                                       :length       => { :within => 6..40 }