4

从动作内部获取将由 MVC 动作提供服务的视图的物理位置的正确方法是什么?

我需要文件的最后修改时间来发送响应标头。

4

2 回答 2

4

获取视图物理位置的正确方法是映射其虚拟路径。可以从(派生自该类的ViewPath属性中检索虚拟路径,因此您的实例通常具有该属性)。BuildManagerCompiledViewRazorViewIView

这是您可以使用的扩展方法:

public static class PhysicalViewPathExtension
{
    public static string GetPhysicalViewPath(this ControllerBase controller, string viewName = null)
    {
        if (controller == null)
        {
            throw new ArgumentNullException("controller");
        }

        ControllerContext context = controller.ControllerContext;

        if (string.IsNullOrEmpty(viewName))
        {
            viewName = context.RouteData.GetRequiredString("action");
        }

        var result = ViewEngines.Engines.FindView(context, viewName, null);
        BuildManagerCompiledView compiledView = result.View as BuildManagerCompiledView;

        if (compiledView != null)
        {
            string virtualPath = compiledView.ViewPath;
            return context.HttpContext.Server.MapPath(virtualPath);
        }
        else
        {
            return null;
        }
    }
}

像这样使用它:

public ActionResult Index()
{
    string physicalPath = this.GetPhysicalViewPath();
    ViewData["PhysicalPath"] = physicalPath;
    return View();
}

或者:

public ActionResult MyAction()
{
    string physicalPath = this.GetPhysicalViewPath("MyView");
    ViewData["PhysicalPath"] = physicalPath;
    return View("MyView");
}
于 2012-04-12T18:48:22.230 回答
0

这可以工作:

private DateTime? GetDate(string controller, string viewName)
{
    var context = new ControllerContext(Request.RequestContext, this);
    context.RouteData.Values["controller"] = controller;
    var view = ViewEngines.Engines.FindView(context, viewName, null).View as BuildManagerCompiledView;
    var path = view == null ? null : view.ViewPath;
    return path == null ? (DateTime?) null : System.IO.File.GetLastWriteTime(path);
}
于 2013-12-09T08:27:30.483 回答