28 lines
855 B
Ruby
28 lines
855 B
Ruby
# frozen_string_literal: true
|
|
|
|
class AddWorkItemParentChildTable < Gitlab::Database::Migration[2.0]
|
|
def up
|
|
create_table :work_item_parent_links do |t|
|
|
t.references :work_item,
|
|
index: false,
|
|
unique: true,
|
|
foreign_key: { to_table: :issues, on_delete: :cascade },
|
|
null: false
|
|
t.references :work_item_parent,
|
|
index: true,
|
|
foreign_key: { to_table: :issues, on_delete: :cascade },
|
|
null: false
|
|
t.integer :relative_position
|
|
t.timestamps_with_timezone null: false
|
|
|
|
t.index [:work_item_id, :work_item_parent_id],
|
|
unique: true,
|
|
name: :index_parent_links_on_work_item_id_and_work_item_parent_id
|
|
end
|
|
end
|
|
|
|
def down
|
|
drop_table :work_item_parent_links
|
|
end
|
|
end
|