Rails booleans bug？

Question

我有一个相当神秘的问题处理Rails中的布尔值,这里是如何重现:

1. rails new boolean_bug
2. rails generate model用户验证:boolean

有了这个,你应该有一个带有User模型的空项目.

3内部boolean_bug/app/models/user.rb

"

class User < ActiveRecord::Base
 before_save :set_false
 attr_accessible :verified                 

 private  
   def set_false  
     self.verified = false
   end
end

4在控制台中知道重现:

$rails -v 
Rails 3.0.1

$ rails console --sandbox
ruby-1.9.2-p0 > User.create!
ActiveRecord::RecordNotSaved: ActiveRecord::RecordNotSaved
from /Users/dpalacio/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.1/lib/active_record/persistence.rb:56:in `save!'
from /Users/dpalacio/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.1/lib/active_record/validations.rb:49:in `save!'
from /Users/dpalacio/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.1/lib/active_record/attribute_methods/dirty.rb:30:in `save!

5 self.verified = false改为self.verified = 0

6再次转到控制台

ruby-1.9.2-p0 > User.create!
 => #<User id: 1, verified: false, created_at: "2010-10-31 04:23:13", updated_at: "2010-10-31 04:23:13"> 

所以重点是使用false保存不起作用,但是真的,1,0工作,这是一个错误吗？或者我做错了什么？

Answer 1

抱歉不是一个rails bug,它实际上是因为before_filter从赋值中返回false,因此活动记录不会保存.