Question

如果我有一个包含多个表的模型，并且我将这些表一起连接到我的控制器类中的平面表中，如何让视图能够访问平面表？

例如，假设我的模型中有三个表（客户，订单，发票）。订单通过外键（CustomerID）链接到客户，发票通过外键（OrderID）链接到订单。

为了在一个平面表中看到所有这些（列出所有客户，即使他们没有订单，列出所有订单，即使他们没有发票），我也有以下匿名类型：

var FlatTable = (from a in customers
let CustomerID = a.ID
join b in orders on a.ID equals b.CustomerID into ab
from b in ab.DefaultIfEmpty()
let OrderID = b.ID
join c in invoices on b.ID equals c.InvoiceID into ac
from c in ac.DefaultIfEmpty()
let InvoiceID = c.ID
select new {a.CustomerName, CustomerID, OrderID, b.ProductDescription, InvoiceID, c.InvoiceAmount});

return View(FlatTable.ToList());

然后在我的视图中（基于我的模型），我如何能够访问FlatTable。

Answer 1

IList<ViewModel> model = (from a in customers
join b in orders on a.ID equals b.CustomerID into ab
from b in ab.DefaultIfEmpty()
join c in invoices on b.ID equals c.InvoiceID into ac
from c in ac.DefaultIfEmpty()
select new ViewModel() {CustomerName = a.CustomerName, CustomerID = a.ID, OrderID = b.ID, ProductDescription = b.ProductDescription, InvoiceID = c.ID, InvoiceMaount = c.InvoiceAmount}).ToList();

在MVC中使用平台

1 个答案: