canvas-lms/db/migrate/20200211143240_split_up_use...

19 lines
502 B
Ruby

# frozen_string_literal: true
class SplitUpUserPreferences < ActiveRecord::Migration[5.2]
tag :postdeploy
disable_ddl_transaction!
def up
User.find_ids_in_ranges(batch_size: 20_000) do |min_id, max_id|
DataFixup::SplitUpUserPreferences
.delay_if_production(priority: Delayed::LOW_PRIORITY, n_strand: ["user_preference_migration", Shard.current.database_server.id])
.run(min_id, max_id)
end
end
def down
raise ActiveRecord::IrreversibleMigration
end
end