我有一篇文章。
当发表评论时,我可以使用“新”来积累这些评论,而评论记录只是在保留条款时才制作。
是否有这样的机制对删除的评论意见进行标识,因此只有在挽救了该条款时才能删除其记录?
感谢。
我建议你熟悉#accepts_nested_attributes_for。 例如,你想要的是什么。 这是改写的:
class Post < ActiveRecord::Base
has_many :comments
accepts_nested_attributes_for :comments, :allow_destroy => true
end
post = Post.find(1) # With 3 comments
post.comments_attributes = [{:_destroy => "1", :id => post.comments.first.id}]
# Look ma! No SQL statements!
post.save!
# BEGIN / UPDATE posts / DELETE FROM comments WHERE id = X / COMMIT
在交易中:
Article.transaction do
...
end
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