Lighthouse 3353

[chielwester]

There was an issue that belongs_to associations with autosave enabled calls save and all callbacks every time the parent record was saved. This results in unexpected behaviour. I've changed this to only call save if the associated record is changed.

[chielwester]

I believe this can be pushed to the 3-0-stable branch as well

[joshk]

This looks good, do you test to make sure assocs are not saved if they have not changed?

[miloops]

This seems to be already in master:

https://github.com/rails/rails/blob/master/activerecord/lib/active_record/autosave_association.rb#L394
Test: https://github.com/rails/rails/blob/master/activerecord/test/cases/autosave_association_test.rb#L683

[chielwester]

I added an extra test to check if save is indeed not called when the associated record has not changed.
This pull request is indeed already in master for some time. What should i do to get this in a stable release soon?

[josevalim]

@chielwester Rails 3.1 is getting released soon, so I am closing this issue. When 3.1 is out and you feel you need this on 3-0-stable, please reopen the issue. Thanks for your pull request.