Get random record using ActiveRecord

User.find(User.pluck(:id).sample)

This will fire off two SQL queries:

User Pluck (0.4ms)  SELECT "users"."id" FROM "users"
User Load (0.3ms)  SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT $2  [["id", 2], ["LIMIT", 1]]