class Post
has n, comments
property :comments_count, Integer
end
class Comment
belongs_to :post
after :save do
post.comments_count +=1
post.save
end
end
#ignore the other attributes
So when I do something like
post.comments.create()
I expect the INSERT and UPDATE statements to be in the same
transaction.
Instead I see this:
INSERT into comments
BEGIN
UPDATE posts
COMMIT
I believe that ActiveRecord would wrap all the callback in the same
transaction.
So in order to guarantee transaction I have to rewrite it to this.
class Post
has n, comments
property :comments_count, Integer
def add_comments
comments_count += 1
comments.new(...)
save
end
end
class Comment
belongs_to :post
end
then call post.add_comment(...)
Thanks for reading.
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