Question

我正在使用Rails 3.2.9开发ROR应用程序，我在应用程序中收到注册页面的错误消息，如下所示

＆lt; li＆gt;登录太短（最少3个字符）＆lt; / li＆gt;＆lt; li＆gt;电子邮件太短（最小的是7个字符）＆lt; / li＆gt;＆lt; li＆gt;电子邮件无效＆lt; / li＆gt;＆lt; li＆gt;密码可以＆amp;＃x27; t为空＆lt; / li＆gt;＆lt; li＆gt;密码太短（最少4个字符）＆lt; / li＆gt;＆lt; li＆gt;密码无效＆lt; / li＆gt;＆lt; li＆gt;密码确认可以＆amp;＃x27; t为空白＆lt; / li＆gt;

这些是Active Record Validation的默认消息。（参考：http://guides.rubyonrails.org/active_record_validations_callbacks.html）

此应用程序之前已在Rails 2中编写，后来已迁移到rails 3.我已根据rails 3更改了validates_presence_of命令以验证：password，：presence =＆gt; true等。在视图（signup.html.erb）中，error_messages_for正在呈现这些消息。它从rails 3弃用。任何人都可以告诉我在视图中需要使用什么而不是error_messages_for，并且所有代码都需要相应地更改以获得错误消息正确..

这是代码（不完整）

app / model中的

user.rb

class User < ActiveRecord::Base
  has_many :excel_files         # One user may have many excel files
  has_one  :user_access_validity# One user may have one license period 

  # Virtual attribute for the unencrypted password
  attr_accessor :password

  attr_accessible :login
  attr_accessible :email
  attr_accessible :password
  attr_accessible :password_confirmation
  attr_accessible :company


  #changes of 'validates' in accordance with rails 3:

  validates :login,  :presence => true, 
                        :length => { :within => 3..40}, 
                        :uniqueness => { :case_sensitive => false },
                        :format => { :with =>  /^([a-z_0-9\.]+)$/i },
                        :on => :create, 
                        :if => :is_login_entered?
  validates :email, :presence => true, 
                        :length => { :within => 7..100}, 
                        :uniqueness => { :case_sensitive => false },
                        :format => {:with => /^([a-z]+((\.?)|(_?))[a-z0-9]+@(mindtree.com|rvce.edu.in))$/i},
                        :on => :create,
                        :if => :is_email_entered? 
  validates :company, :presence => true,
                        :format => { :with =>/(mindtree|RVCE)/i},
                        :format => { :with => /^([a-z]+)$/i },
                        :on => :create, 
                        :if => :is_company_entered? 
  #validates_presence_of     :login, :email, :company
 on => :create, :if => :is_login_entered?


   validates :password, :presence => true,
                       :length => { :within => 4..40 },
                       :confirmation => true,
                       :format => { :with => /^([a-z0-9@!#\$]+)$/i },
                       :on => :create,
                       :if => :password_required?



  validates :password_confirmation, :presence => { :if => :password_required? }
  #validates_presence_of     :password_confirmation,      :if => :password_required? 


  before_save :encrypt_password

。。

在signup.html.erb

中

    <font color=red>(Fields marked * are mandatory)</font><h3>Sign me up!</h3>

    <br>


   <span class='error'><%= error_messages_for (@user) %></span>
    <%= form_for :user do |f| -%>

    <p><label for="login"><span class='redcolor'>*</span>Login</label><br/>
    <%= f.text_field :login %></p>

    <p><label for="email"><span class='redcolor'>*</span>Email</label><br/>
    <%= f.text_field :email %></p>

    <p><label for="password"><span class='redcolor'>*</span>Password</label><br/>
    <%= f.password_field :password %></p>

    <p><label for="password_confirmation"><span class='redcolor'>*</span>Confirm Password</label><br/>
    <%= f.password_field :password_confirmation %></p>

    <p><label for="company"><span class='redcolor'>*</span>Company</label><br/>
    <%= f.text_field :company %></p>

    <p><%= submit_tag 'Sign up' %></p>
    <% end -%>

解决方案

从http://www.rubydoc.info/github/edavis10/redmine/ApplicationHelper:error_messages_for获得以下代码，其中shud将在application_helper.rb中添加，并且html.erb文件中的相应更改为＆lt;％= error_messages_for（@ user）％＆gt;

代码：

def error_messages_for(*objects)
  html = ""
  objects = objects.map {|o| o.is_a?(String) ? instance_variable_get("@#{o}") : o}.compact
  errors = objects.map {|o| o.errors.full_messages}.flatten
  if errors.any?
    html << "<div id='errorExplanation'><ul>\n"
    errors.each do |error|
      html << "<li>#{h error}</li>\n"
    end
    html << "</ul></div>\n"
  end
  html.html_safe
end

Answer 1

http://guides.rubyonrails.org/active_record_validations_callbacks.html

如果您阅读本指南，您会看到在您的表单中，您可以使用form.error_messages

Answer 2

问题的解决方案添加在问题

下方

Rails 3带有不需要/额外字符的活动记录验证错误消息

解决方案

2 个答案: