诗歌rails之Hacking ActiveRecord

 1 # test_helper.rb
 2 class Test::Unit::TestCase
 3   self.use_transactional_fixtures = true
 4   self.use_instantiated_fixtures  = false
 5   
 6   def disable_validation
 7     ActiveRecord::Base.disable_validation!
 8     yield
 9     ActiveRecord::Base.enable_validation!
10   end
11 end
12 
13 module ValidationDisabler
14   def self.included(base)
15     base.class_eval do
16       extend ClassMethods
17       alias_method_chain :valid?, :disable_check
18     end
19   end
20   
21   def valid_with_disable_check?
22     if self.class.validation_disabled?
23       true
24     else
25       valid_without_disable_check?
26     end
27   end
28   
29   module ClassMethods
30     def disable_validation!
31       @@disable_validation = true
32     end
33     
34     def enable_validation!
35       @@disable_validation = false
36     end
37     
38     def validation_disabled?
39       @@disable_validation ||= false
40     end
41   end
42 end
43 
44 class ActiveRecord::Base
45   include ValidationDisabler
46 end
47 
48