blob: 57606a33cb9276badc158363f69fd72fca37163e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
# rubocop:disable RemoveIndex
class AddUniqueIndexForEnvironmentSlug < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = true
DOWNTIME_REASON = 'Adding a *unique* index to environments.slug'
disable_ddl_transaction!
def up
add_concurrent_index :environments, [:project_id, :slug], unique: true
end
def down
remove_index :environments, [:project_id, :slug] if index_exists? :environments, [:project_id, :slug]
end
end
|