在.NET 4.5中,如果我在RouteData.Values中向RouteValueDictionary添加了任何东西,我可以在控制器中通过将其添加为控制器的in-parameter来解决这个问题,但这似乎不适用于.NET Core
这是我的IRouter的RouteAsync方法:
public async Task RouteAsync(RouteContext context)
{
if (context == null) throw new ArgumentNullException(nameof(context));
var model = GetMyModel();
if (model == null)
{
await _target.RouteAsync(context);
return;
}
context.RouteData.Values["mymodel"] = model;
var routeValues = new RouteValueDictionary
{
{"controller", pageController.Name.Replace("Controller", string.Empty)},
{"action", "Index"},
{"mymodel", model }
};
var tokenValues = new RouteValueDictionary
{
{"mymodel", model }
};
// Set our values to the route data.
// Don't do it when creating the snapshot as we'd like them to be there after the restore as well.
foreach (var tokenValueKey in tokenValues.Keys)
{
context.RouteData.DataTokens[tokenValueKey] = tokenValues[tokenValueKey];
}
foreach (var routeValueKey in routeValues.Keys)
{
context.RouteData.Values[routeValueKey] = routeValues[routeValueKey];
}
// This takes a snapshot of the route data before it is routed again
var routeDataSnapshot = context.RouteData.PushState(_target, routeValues, tokenValues);
try
{
await _target.RouteAsync(context);
}
finally
{
// Restore snapshot
routeDataSnapshot.Restore();
}
}
在此之后,我的控制器实际上已被调用,但参数mymodel只是一个默认值,而不是我在路由器中设置的值。如果我查看RouteData.Values键" mymodel"是有价值的。为什么in-parameter也没有设置为this?我是否需要为模型绑定添加一些中间件?
public IActionResult Index(MyModelClass mymodel)
{
return View();
}
答案 0 :(得分:1)
RouteData
可通过控制器实例作为属性访问。
public class SomeControllerController : Controller {
public IActionResult Index() {
if (base.RouteData.Values.ContainsKey("mymodel") == false) {
return NotFound();
}
MyModel model = (MyModel) base.RouteData.Values["mymodel"];
//LOGIC...
return Index(model);
}
}
为了更清洁,您可以创建一个抽象控制器来执行此操作。
参考:https://msdn.microsoft.com/en-us/library/system.web.mvc.controller.routedata(v=vs.118).aspx