Bulk remove users


(Yavuz) #1

I have imported my old data from phpBB3 which went smooth. But I made a mistake by not first cleaning up the old inactive users and still importing them. I now have around 4000 users with no posts I wish to remove.

What is the best way to bulk remove users?


(Régis Hanol) #2

If you really don’t care about these users, then I would do this

  1. make a backup (better safe than sorry)
  2. ssh into your server and type
cd /var/discourse
./launcher enter app
rails c
User.where(post_count: 0).destroy_all

(Yavuz) #3

These instructions produce the following error:
[1] pry(main)> User.where(post_count: 0).destroy_all ActiveRecord::StatementInvalid: PG::UndefinedColumn: ERROR: column users.post_count does not exist LINE 1: SELECT "users".* FROM "users" WHERE "users"."post_count" = 0 ^ : SELECT "users".* FROM "users" WHERE "users"."post_count" = 0 from /var/www/discourse/vendor/bundle/ruby/2.3.0/gems/rack-mini-profiler-0.10.1/lib/patches/db/pg.rb:90:in `exec'

This is not really documented I think but if it is please point me in the right direction?


(Mittineague) #4

“post count” != “post_count” ??


(Régis Hanol) #5

My bad, the post_count property was moved to another table for optimization reasons.

Here’s the updated query

User.joins(:user_stat).where("user_stats.post_count = 0").destroy_all

(Yavuz) #6

Thank you, the updated query works!


(Joshua Rosenfeld) #7

One of my sites uses SSO and we’re looking to remove users that have never posted and haven’t been seen in a year (to avoid killing users who are just quiet). Is this query valid in the rails console?

User.joins(:user_stat).where("user_stats.post_count = 0 AND previous_visit_at <= '2016-05-20'::timestamp").destroy_all

(Régis Hanol) #8

It looks good to me.


(Joshua Rosenfeld) #9

That worked like a charm (after locating rails), thanks!

Follow up: is it possible to remove all users not in a specific group (let’s call the group dont_delete_me) who have never posted? The group would not be the primary group.