How to recalculate all trust_levels?

[JammyDodger]

How about this method?

Modify trust level for all users

Here’s an example of a bulk operation to set the trust level to 2 for all users currently at trust level 0 or 1: This is slow, but properly triggers all side effects (group membership updates, badge grants, and logging). It may be preferred especially when you have fewer than 1000 users. Note: this does not skip users with manually locked trust levels — add .where(manual_locked_trust_level: nil) to the query if you want to skip them. User.where(trust_level: [0, 1]).find_each do |user| user.…

No. Perhaps not precisely what you’re after.