Make acts_as_versioned know target model belongs_to association
acts_as_versioned is a great plug-in for Rails. It can keep track of all modifications to your target model with only a little setup. But it seems not support has_*/belongs_to association by default. So let's see how to enable this.
Assume that you are going to keep track of the 'Post' model. and this is probably your model looks like:
class Post < ActiveRecord::Base acts_as_versioned belongs_to :user end
But version.user will not work (at least, for this version).
(1) For newer version of acts_as_versioned, try this:
class Post < ActiveRecord::Base acts_as_versioned do belongs_to :user end end
(2) And for older version, try this:
class Post < ActiveRecord::Base acts_as_versioned belongs_to :user end Post.versioned_class.class_eval do belongs_to :user end
solution 2 works for me! but solution 1 not (ruby 1.8.6, rails 2.3.2, acts_as_versioned 0.3.1)
==Traditional Chinese version==
acts_as_versioned 是個好套件。只要一點設定他就可以幫你紀錄model的版本變動。可是他預設沒有支援has_*/belongs_to的資料庫關聯，所以讓我…
Assume that you are going to keep track of the 'Post' model. and this is probably your model looks like:
class Post < ActiveRecord::Base acts_as_versioned belongs_to :user end
But version.user will not work (at least, for this version).
(1) For newer version of acts_as_versioned, try this:
class Post < ActiveRecord::Base acts_as_versioned do belongs_to :user end end
(2) And for older version, try this:
class Post < ActiveRecord::Base acts_as_versioned belongs_to :user end Post.versioned_class.class_eval do belongs_to :user end
solution 2 works for me! but solution 1 not (ruby 1.8.6, rails 2.3.2, acts_as_versioned 0.3.1)
==Traditional Chinese version==
acts_as_versioned 是個好套件。只要一點設定他就可以幫你紀錄model的版本變動。可是他預設沒有支援has_*/belongs_to的資料庫關聯，所以讓我…