gitlab-org--gitlab-foss/db/migrate/20150223022001_set_missing_last_activity_at.rb

class SetMissingLastActivityAt < ActiveRecord::Migration[4.2]
  def up
    execute "UPDATE projects SET last_activity_at = updated_at WHERE last_activity_at IS NULL"
  end

  def down
  end
end
Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 02:27:31 -05:00			`class SetMissingLastActivityAt < ActiveRecord::Migration[4.2]`
Give last_activity_at a default value so it will always be set 2015-02-22 20:31:12 -05:00			`def up`
			`execute "UPDATE projects SET last_activity_at = updated_at WHERE last_activity_at IS NULL"`
			`end`

			`def down`
			`end`
			`end`