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# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
# rubocop:disable Migration/Datetime
class ScheduleIssuesClosedAtTypeChange < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
class Issue < ActiveRecord::Base
self.table_name = 'issues'
include EachBatch
def self.to_migrate
where('closed_at IS NOT NULL')
end
end
def up
return unless migrate_column_type?
change_column_type_using_background_migration(
Issue.to_migrate,
:closed_at,
:datetime_with_timezone
)
end
def down
return if migrate_column_type?
change_column_type_using_background_migration(
Issue.to_migrate,
:closed_at,
:datetime
)
end
def migrate_column_type?
# Some environments may have already executed the previous version of this
# migration, thus we don't need to migrate those environments again.
column_for('issues', 'closed_at').type == :datetime
end
end
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