gitlab-org--gitlab-foss/db/migrate/20160825052008_add_table_merge_request_metrics.rb
Timothy Andrew 918e589c2b Implement a second round of review comments from @DouweM.
- Don't use `TableReferences` - using `.arel_table` is shorter!
- Move some database-related code to `Gitlab::Database`
- Remove the `MergeRequest#issues_closed` and
  `Issue#closed_by_merge_requests`  associations. They were either
  shadowing or were too similar to existing methods. They are not being
  used anywhere, so it's better to remove them to reduce confusion.
- Use Rails 3-style validations
- Index for `MergeRequest::Metrics#first_deployed_to_production_at`
- Only include `CycleAnalyticsHelpers::TestGeneration` for specs that
  need it.
- Other minor refactorings.
2016-09-21 00:47:37 +05:30

38 lines
1.5 KiB
Ruby

# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
class AddTableMergeRequestMetrics < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
# Set this constant to true if this migration requires downtime.
DOWNTIME = true
# When a migration requires downtime you **must** uncomment the following
# constant and define a short and easy to understand explanation as to why the
# migration requires downtime.
DOWNTIME_REASON = 'Adding foreign key'
# When using the methods "add_concurrent_index" or "add_column_with_default"
# you must disable the use of transactions as these methods can not run in an
# existing transaction. When using "add_concurrent_index" make sure that this
# method is the _only_ method called in the migration, any other changes
# should go in a separate migration. This ensures that upon failure _only_ the
# index creation fails and can be retried or reverted easily.
#
# To disable transactions uncomment the following line and remove these
# comments:
# disable_ddl_transaction!
def change
create_table :merge_request_metrics do |t|
t.references :merge_request, index: { name: "index_merge_request_metrics" }, foreign_key: { on_delete: :cascade }, null: false
t.datetime 'latest_build_started_at'
t.datetime 'latest_build_finished_at'
t.datetime 'first_deployed_to_production_at', index: true
t.datetime 'merged_at'
t.timestamps null: false
end
end
end