Hey Philip,

Hmm, the only thing we have is a OrderSearchingNotification but this doesn't have an ability to customize the sort order unfortunately so yea, that would mean re-implementing the API controller too to support this.

I also don't think our OrderSearch specifications support sorting on custom properties either so you are likely going to need to implement the search logic too unfortunately 😔

Matt

Hi Matt,

Thanks for the (very) swift response!

No problem, I thought that may be the case.

Just a couple of related questions, is the right way to go to use IOrderService.SearchOrders in the API endpoint? Is that what the normal Order List api endpoint uses?

    [HttpGet]
    public PagedResult<CustomOrderViewItemDto> GetOrders(string searchTerm = "", long pageNumber = 1, long pageSize = 30, string orderBy = "", string orderDirection = "")
    {
        var searcher = new OrderSearchableFieldsMatchSpecification(searchTerm, StringComparisonType.Contains);
        var sorter = new SortByArrivalDateDescendingSpecification();

        var results = _orderService.SearchOrders(searcher, sorter, pageNumber, pageSize);

        //... rest of code

And if so, using the ISortSpecification<OrderReadOnly> to handle the sorting, it gives me an Accept function. Just wondering what that is for? Is it safe to just leave it unimplemented like so?

internal class SortByArrivalDateDescendingSpecification : ISortSpecification<OrderReadOnly>
{
    public void Accept(IVisitor visitor, IVisitContext context)
    {
    }

    public IOrderedEnumerable<OrderReadOnly> InvokeSort(IEnumerable<OrderReadOnly> collection)
    {
        return collection.OrderByDescending(prop =>
            DateTime.TryParse(prop.Properties[Constants.Orders.Properties.ArrivalDate], out var arrivalDate)
                ? arrivalDate
                : default);
    }

    public IOrderedEnumerable<OrderReadOnly> InvokeSort(IOrderedEnumerable<OrderReadOnly> collection)
    {
        return collection.OrderByDescending(prop =>
            DateTime.TryParse(prop.Properties[Constants.Orders.Properties.ArrivalDate], out var arrivalDate)
                ? arrivalDate
                : default);
    }
}

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