Edit a user setting for all Discourse users

So you want to edit user setting for all Discourse users? Great, let’s get started!

From console, run this command:

./launcher enter app

Access Rails console:

rails c

From Rails console, run the query:

To set the last seen date for users who have never logged in (never seen):
User.where("last_seen_at IS NULL").update_all(last_seen_at: 1.week.ago)

To default all users to mailing list mode (send an email for every new post):
User.update_all(mailing_list_mode: true)

To default all users to email always mode (do not suppress email notifications when user is active on the site):
User.update_all(email_always: true)

That’s it, you have edited user setting for all Discourse users!

Source: https://meta.discourse.org/t/edit-a-user-setting-for-all-discourse-users/25162