ruby on rails password_confirmation验证

Question

我在密码确认验证方面有问题

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 %>

因此，对于任何插入的数据，验证抛出错误。我认为:password_confirmation有问题，而RoR接收它时没有任何价值，这是可能的吗？我该怎么做呢？

Answer 1

尝尝这个

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

控制器的目的是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