c# - Nopcommerce MessageTemplate，无法将方法添加为 token

Question

我正在 nopCommerce 中制作一个 MessageTemplate，我想添加一个 token 来实现另一个类的方法。

在“ProductService”类中，我有一个名为“DailyBestsellersReport”的方法，我想将其添加为“MessageTokenProvider”中我的 MessageTemplate 的标记。但是，当我在 MessageTokenProvider 中添加“ProductService”作为引用时，它告诉我方法“DailyBestsellerReport”在当前上下文中无效，这让我认为某处存在语法错误。这是我想添加为 token 的方法:

产品服务类:

public IList<BestsellersReportLine> DailyBestSellersReport(
    int recordsToReturn = 5, int orderBy = 1, int groupBy = 1)
{
    var yesterDay = DateTime.Now.Subtract(new TimeSpan(1, 0, 0, 0));
    var earliest = new DateTime(yesterDay.Year, yesterDay.Month, yesterDay.Day, 0, 0, 0);
    var latest = earliest.Add(new TimeSpan(1, 0, 0, 0, -1));
    var currentDay = DateTime.Now;
    var dayBefore = DateTime.Now.AddDays(-1);
    
    
        var query1 = from opv in _opvRepository.Table
                 where earliest <= currentDay && latest >= dayBefore
                 join o in _orderRepository.Table on opv.OrderId equals o.Id
                 join pv in _productVariantRepository.Table on opv.ProductVariantId equals pv.Id
                 join p in _productRepository.Table on pv.ProductId equals p.Id
                 select opv;


        var query2 = groupBy == 1 ?
            //group by product variants
               from opv in query1
               group opv by opv.ProductVariantId into g
               select new
               {
                   EntityId = g.Key,
                   TotalAmount = g.Sum(x => x.PriceExclTax),
                   TotalQuantity = g.Sum(x => x.Quantity),
               }
               :
            //group by products
               from opv in query1
               group opv by opv.ProductVariant.ProductId into g
               select new
               {
                   EntityId = g.Key,
                   TotalAmount = g.Sum(x => x.PriceExclTax),
                   TotalQuantity = g.Sum(x => x.Quantity),
               }
               ;

        switch (orderBy)
        {
            case 1:
                {
                    query2 = query2.OrderByDescending(x => x.TotalQuantity);
                }
                break;
            case 2:
                {
                    query2 = query2.OrderByDescending(x => x.TotalAmount);
                }
                break;
            default:
                throw new ArgumentException("Wrong orderBy parameter", "orderBy");
        }

        if (recordsToReturn != 0 && recordsToReturn != int.MaxValue)
            query2 = query2.Take(recordsToReturn);

        var result = query2.ToList().Select(x =>
        {
            var reportLine = new BestsellersReportLine()
            {
                EntityId = x.EntityId,
                TotalAmount = x.TotalAmount,
                TotalQuantity = x.TotalQuantity
            };
            return reportLine;
        }).ToList();

        return result;
}

我想在这里添加“DailyBestsellersReport”:

MessageTokenProvider 类

public void AddReportTokens(IList<Token> tokens, BestsellersReportLine DailyBestSellersReport, ProductService productService, int languageId)
{
    tokens.Add(new Token("BestsellersReportLine.EntityId", DailyBestSellersReport.EntityId.ToString()));
    tokens.Add(new Token("BestsellersReportLine.TotaAmount", DailyBestSellersReport.TotalAmount.ToString()));
    tokens.Add(new Token("BestsellersReportLine.TotalQuantity", DailyBestSellersReport.TotalQuantity.ToString()));

    tokens.Add(new Token("ProductService.DailyBestSellersReport", productService.DailyBestSellersReport.ToString)());
}

当我添加时:

tokens.Add(new Token("ProductService.DailyBestSellersReport", productService.DailyBestSellersReport.ToString)());

它告诉我:

Error 10 'Nop.Services.Catalog.ProductService.DailyBestSellersReport(int, int, int)' is a 'method', which is not valid in the given context

我还添加了来自“BestsellersReportLine”类的标记，它工作正常，但是这些是属性而不是像这样的方法:

public partial class BestsellersReportLine
{
    public int EntityId { get; set; }

    public decimal TotalAmount { get; set; }

    public int TotalQuantity { get; set; }
}

有什么想法吗？

谢谢

Answer 1

错误本身会告诉解决方案，当方法接受参数时，如何在不向其传递任何参数的情况下调用方法。

您需要编写根据 productService.DailyBestSellersReport

的结果返回字符串的方法

public string ReturnTable()
{
    var report = productService.DailyBestSellersReport(param1,param2,param2)
    
    StringBuilder sb = new StringBuilder();
    
    foreach (var r in report)
    {    
        // I believe you are trying to build HTML table so you can append any string here to sb   
    }
    return sb.ToString();    
}

然后使用

tokens.Add(new Token("ProductService.DailyBestSellersReport",ReturnTable());

sb.AppendLine("<table border=\"0\" style=\"width:100%;\">");//sb is stringbuilder's object

sb.AppendLine(string.Format("<tr style=\"background-color:{0};text-align:center;font-size:12px; \">", _templatesSettings.Color1));
sb.AppendLine(string.Format("<th>Sr. No.</th>"));
sb.AppendLine(string.Format("<th>Item1</th>"));
sb.AppendLine(string.Format("<th>Item2</th>"));
sb.AppendLine("</tr>");

// Header is closed
// Next is data which will be created using foreach on data from `IList<BestsellersReportLine>`
foreach (var item in result)
{
    sb.AppendLine(string.Format("<tr style=\"background-color: {0};text-align: center;\">", _templatesSettings.Color2));
              // you can place all your data in below tds, you can create any number of tds.
    sb.AppendLine(string.Format("<td style=\"padding: 0.6em 0.4em;text-align: right;\">{0}</td>", item.Prop1));
    sb.AppendLine("<td style=\"padding: 0.6em 0.4em;text-align: left;\">" + item.Prop2);
    sb.AppendLine("</td>");
    sb.AppendLine("</tr>");
}
sb.AppendLine("</table>"); // don't forget to close table

return sb.ToString();