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# frozen_string_literal: true
class AddEpicBoardList < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
unless table_exists?(:boards_epic_lists)
with_lock_retries do
create_table :boards_epic_lists do |t|
t.timestamps_with_timezone
t.references :epic_board, index: true, foreign_key: { to_table: :boards_epic_boards, on_delete: :cascade }, null: false
t.references :label, index: true, foreign_key: { on_delete: :cascade }
t.integer :position
t.integer :list_type, default: 1, limit: 2, null: false
t.index [:epic_board_id, :label_id], unique: true, where: 'list_type = 1', name: 'index_boards_epic_lists_on_epic_board_id_and_label_id'
end
end
end
add_check_constraint :boards_epic_lists, '(list_type <> 1) OR ("position" IS NOT NULL AND "position" >= 0)', 'boards_epic_lists_position_constraint'
end
def down
with_lock_retries do
drop_table :boards_epic_lists
end
end
end
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