如何在自定义剃刀视图引擎中使用相对虚拟路径

Posted 2021-04-01

我使用自定义剃刀视图引擎与重写MasterLocationFormats。我想为搜索视图和母版页提供相对虚拟路径位置。

怎么办？

 public class ExampleRazorViewEngine : RazorViewEngine
{
    /// <summary>
    /// Initializes a new instance of the <see cref="ExampleRazorViewEngine"/> class.
    /// </summary>
    public ExampleRazorViewEngine()
    {

        ViewLocationFormats = new string[] {

             "../../../Views/{1}/{0}.cshtml",
           };
        MasterLocationFormats = new string[] {
             "../../../Views/{1}/{0}.cshtml",
             };
        PartialViewLocationFormats = new string[] {
             "../../../Views/{1}/{0}.cshtml",
             };
        FileExtensions = new string[] { "cshtml" };            

    }

这样做会产生以下错误。这里不允许相对虚拟路径.. <path> ..

答案

假设您要在项目目录中的Plugins文件夹中加载视图文件。然后你的代码看起来像下面的例子。

例：

public class PluginViewEngine : RazorViewEngine
{
    private List<string> _plugins = new List<string>();
    public PluginViewEngine()
    {
        var plugins = Directory.GetDirectories(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Plugins")).ToList();
           //Load your directory
        plugins.ForEach(s =>
        {
            var di = new DirectoryInfo(s);
            _plugins.Add(di.Name);
        });

        ViewLocationFormats = GetViewLocations();
        MasterLocationFormats = GetMasterLocations();
        PartialViewLocationFormats = GetViewLocations();

    }
    public string[] GetViewLocations()
    {
        var views = new List<string> {
            "~/Views/{1}/{0}.cshtml"
             };

        _plugins.ForEach(plugin =>
            views.Add("~/Plugins/" + plugin + "/Views/{1}/{0}.cshtml")
        );   //Load your view

        return views.ToArray();
    }

    public string[] GetMasterLocations()
    {
        var masterPages = new List<string> {
            "~/Views/Shared/{0}.cshtml"
            };                
        _plugins.ForEach(plugin =>
            masterPages.Add("~/Plugins/" + plugin + "/Views/Shared/{0}.cshtml")
        );//Load your view

        return masterPages.ToArray();
    }
}