40 lines
1.5 KiB
Ruby
40 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 CreateIssueAssigneesTable < ActiveRecord::Migration
|
|
include Gitlab::Database::MigrationHelpers
|
|
|
|
INDEX_NAME = 'index_issue_assignees_on_issue_id_and_user_id'
|
|
|
|
# Set this constant to true if this migration requires downtime.
|
|
DOWNTIME = false
|
|
|
|
# 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 = ''
|
|
|
|
# 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 up
|
|
create_table :issue_assignees do |t|
|
|
t.references :user, foreign_key: { on_delete: :cascade }, index: true, null: false
|
|
t.references :issue, foreign_key: { on_delete: :cascade }, null: false
|
|
end
|
|
|
|
add_index :issue_assignees, [:issue_id, :user_id], unique: true, name: INDEX_NAME
|
|
end
|
|
|
|
def down
|
|
drop_table :issue_assignees
|
|
end
|
|
end
|