Update object, while retaining the update_at timestamp

Question

I want to update an attribute on an object, but keep the attribute updated_at (DateTime type) unchanged.

This doesn't seem to work, the updated_at gets current date/time:

p = Post.first
p.update(updated_at: p.updated_at, published: true)

http://blog.bigbinary.com/2009/01/21/override-automatic-timestamp-in-activerecord-rails.html — usha, Nov 26 '14 at 16:55
Possible duplicate of [Is there a way to avoid automatically updating Rails timestamp fields?](http://stackoverflow.com/questions/861448/is-there-a-way-to-avoid-automatically-updating-rails-timestamp-fields) — Dave Schweisguth, May 12 '16 at 18:47

score 1 · Accepted Answer · edited May 23 '17 at 11:44

1

But the short answer is to use update_columns . i.e. user.update_columns(last_request_at: Time.current)

edited May 23 '17 at 11:44

Community

answered Nov 26 '14 at 16:56

aspencer8111

score 1 · Answer 2 · answered Nov 26 '14 at 16:57

1

Just use update_all method, it does not touch updated_at field http://apidock.com/rails/ActiveRecord/Base/update_all/class

answered Nov 26 '14 at 16:57

disadvantage of this method is it’s not invoke validation of model. – Roman Kiselenko Nov 26 '14 at 17:00
Yep, but OP simply changes published flag. In more complex cases it is better to avoid such method. – Stanislav Mekhonoshin Nov 26 '14 at 17:02

2 Answers2