acts_as_taggable changes in after_commit callback?

[concept47]

Is there a way to get a hold of changes from acts_as_taggable in the after_commit callback? Rails provides the previous_changes Hash for ActiveRecord object and was just wondering if acts-as-taggable had anything like it (I know of the _list_changed? method on acts_as taggable objects)

[seuros]

I'm not totally sure, but if you use cache, the cache column will be changed.

[pioz]

It would be nice if previous_chages[:tag_list] also worked without column cache. Now the value of previous_changes[:tag_list] seems to work in half way: the first element is always nil while the second element of the array is correct.

[stanhu]

@pioz That issue may be a limitation of Rails 5+:

• Dirty attribute changes for virtual attributes broken between Rails 5.0 and 5.2 rails/rails#33753 (comment)
• Add an option to track changes to dynamic/virtual attributes (ActiveRecord 5.1+ behaviour) paper-trail-gem/paper_trail#1162

[brentgreeff]

I am using this gem with RailsAdmin, - I have got partial caching for my Taggable model, - if I save taggable, everything is great, when I assign to tag_list Taggable is saved and the cache is invalidated. BUT when the tag model is changed in RailsAdmin the cache is not invalidated.

How can I run code when a Tag is saved?

I tried to monkey patch ActsAsTaggableOn::Tag with a callback but it doesnt work.

I am starting to think that I need to remove RailsAdmin or at least write my own admin for saving tags, or I need to write a sweeper to check which tags have been changed in the past hour.