gitlab-org--gitlab-foss/db/migrate/20160823081327_change_merge...

class ChangeMergeErrorToText < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = true
  DOWNTIME_REASON = 'This migration requires downtime because it alters a column from varchar(255) to text.'

  def change
    change_column :merge_requests, :merge_error, :text, limit: 65535
  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 07:27:31 +00:00			`class ChangeMergeErrorToText < ActiveRecord::Migration[4.2]`
Change merge_error column from string to text type In some cases, the artificial 255-character limit would cause an error in MergeWorker. Closes #20593 2016-08-23 08:19:58 +00:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = true`
			`DOWNTIME_REASON = 'This migration requires downtime because it alters a column from varchar(255) to text.'`

			`def change`
			`change_column :merge_requests, :merge_error, :text, limit: 65535`
			`end`
			`end`