ruby-on-rails-3 - ruby on rails password_confirmation 验证

Question

我的密码确认验证有问题

在用户模型中：

 validates :password, :confirmation => true

在视图 new.html.erb 中：

 <%= form_for(@user) do |f| %>
   <div class="field">
     <%= f.label :password %><br />
     <%= f.password_field :password %><br />
     <%= f.label :password_confirmation %><br />
     <%= f.password_field :password_confirmation %><br />
   </div>
   <div class="actions">
     <%= f.submit %>
   </div>
 <% end %>

所以对于任何插入的数据，验证都会抛出错误。我认为 :password_confirmation 有问题，并且 RoR 收到它的值为 nil 是否可能？我能怎么做？

Answer 1

尝试这个

class User < ActiveRecord::Base
  validates :password, :presence =>true, :confirmation =>true
  validates_confirmation_of :password
end

控制器旨在从视图中获取数据并尝试执行保存，这是视图的代码：

<%= form_for(@user) do |f|%>
  <% if @user.errors.any? %>
    ....
    ....
  <% 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 %>
  <%= f.submit %>
<% end %>


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:

http://ar.rubyonrails.org/classes/ActiveRecord/Validations/ClassMethods.html