ruby-on-rails-3 - 验证器，密码确认

Question

我不明白为什么模型不检查密码确认，这是模型的代码:

class User < ActiveRecord::Base
  attr_accessor :password_confirmation
  validates :email, :presence =>true,
                    :uniqueness=>true
  validates :password, :presence =>true,
                    :length => { :minimum => 5, :maximum => 40 },
                    :confirmation =>true
  validates_confirmation_of :password
end

Controller 旨在从 View 中获取数据并尝试执行保存，这是 View 的代码:

<h1>Registration process</h1>
<%= form_for(@new_user) do |f|%>
<% if @new_user.errors.any? %>
  <div id="errorExplanation">
    <h2><%= pluralize(@new_user.errors.count, "error") %> prohibited this article from being saved:</h2>
    <ul>
    <% @new_user.errors.full_messages.each do |msg| %>
      <li><%= msg %></li>
    <% end %>
    </ul>
  </div>
  <% end %>
    <%= f.label :email %><br />
    <%= f.text_field :email %><br />
    <%= f.label :password %><br />
    <%= f.password_field :password %><br />
    <%= f.label :password_confirmation %><br />
    <%= f.password_field :password_confirmation %>
    <%#TODO Confirm password%>

    <%= f.submit 'Join' %>
<%end%>

如果密码不匹配，则不会出现错误。

Answer 1

我也刚刚被这个烫伤了。我怀疑你的确认值是 nil .从文档:

NOTE: This check is performed only if password_confirmation is not nil, and by default only on save. To require confirmation, make sure to add a presence check for the confirmation attribute:

Ruby on Rails API: validates_confirmation_of

此外，您不需要 attr_accessor :password_confirmation ，因为验证会为您添加它。导轨!