After trigger event

[pragmaticivan]

I'm getting this warning after trigger an state machine event:

DEPRECATION WARNING: `serialized_attributes` is deprecated without replacement, and will be removed in Rails 5.0.

[rosskevin]

@pragmaticivan is there a stack trace that leads you to this gem causing it? serialized_attributes doesn't appear to occur in this codebase or that of the parent project. It may be that this is in your codebase and because of callbacks, it looks like it is coming from state_machines?

[catherinetcai]

@rosskevin - It looks like a change that might have to be made in the gem. Paper Trail had the same issue: paper-trail-gem/paper_trail#416

[rosskevin]

It looks like this is confirmed to be unrelated to state_machines. Even though state_machines will be somewhere in the call stack, it seems to be other gems or an AR related issue.

Agreed?

[mbulat]

@pragmaticivan Might you be using activerecord-import? I got the same warning after upgrading to the state-machines gem, which led me here. But the warning indicated a line where I was using activerecord-import. I upgraded activerecord-import and the warning is gone. activerecord import does use serialized_attributes https://github.com/zdennis/activerecord-import/blob/8ba94f7c05b2259f6447aaf8b01ca5f4b0f5e0a2/lib/activerecord-import/import.rb#L595

Obviously it could be some other gem. It's possible after updating to state_machines, code that was not previously running started to work again which is calling the other library.