gitlab-org--gitlab-foss/db/migrate/20180504195842_project_name_lower_index.rb
Jan Provaznik 0fc9f9d3e7 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
2018-11-22 13:18:28 +01:00

32 lines
879 B
Ruby

# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
class ProjectNameLowerIndex < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
# Set this constant to true if this migration requires downtime.
DOWNTIME = false
INDEX_NAME = 'index_projects_on_lower_name'
disable_ddl_transaction!
def up
return unless Gitlab::Database.postgresql?
disable_statement_timeout do
execute "CREATE INDEX CONCURRENTLY #{INDEX_NAME} ON projects (LOWER(name))"
end
end
def down
return unless Gitlab::Database.postgresql?
disable_statement_timeout do
if supports_drop_index_concurrently?
execute "DROP INDEX CONCURRENTLY IF EXISTS #{INDEX_NAME}"
else
execute "DROP INDEX IF EXISTS #{INDEX_NAME}"
end
end
end
end