也玩MVC3.0 Razor自定义视图引擎来修改默认的Views目录结构

刚刚爱上MVC3.0，几个不眠夜的学习越来越有趣。今天随手尝试自定义Mvc3.0的视图引擎，虽然已成功，但是还发现有点小疑问。随手贴出来希望大家指教指教。

 

MVC的视图文件目录被固定/Views目录内，区域视图文件也是被固定在/Areas目录下，出于好奇和对目录名的敏感，尝试修改它。通过reflector找到视图引擎的构造接口类VirtualPathProviderViewEngine

在MVC2.0中，自定义自己的视图引擎，继承它即可，但在3.0中，我发现继承它会缺少一个函数。再reflector获得了BuildManagerViewEngine的抽象类，因为RazorViewEngine继承的是该抽象类。

所以最直接还是在自己的视图引擎中继承它。

  

代码

   
     

    
      
    
      public
    
       
    
      class
    
       myViewEngine : BuildManagerViewEngine
 {

 
    
      //
    
       Fields
    
      

    
       
    
      internal
    
       
    
      static
    
       
    
      readonly
    
       
    
      string
    
       ViewStartFileName 
    
      =
    
       
    
      "
    
      _ViewStart
    
      "
    
      ;

 
    
      //
    
       Methods
    
      

    
       
    
      public
    
       myViewEngine()
 : 
    
      this
    
      (
    
      null
    
      )
 {
 }

 
    
      public
    
       myViewEngine(IViewPageActivator viewPageActivator)
 : 
    
      base
    
      (viewPageActivator)
 {
 
    
      base
    
      .AreaViewLocationFormats 
    
      =
    
       
    
      new
    
       
    
      string
    
      [] { 
    
      "
    
      ~/Areas/{2}/Views/{1}/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/{1}/{0}.vbhtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/Shared/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/Shared/{0}.vbhtml
    
      "
    
       };
 
    
      base
    
      .AreaMasterLocationFormats 
    
      =
    
       
    
      new
    
       
    
      string
    
      [] { 
    
      "
    
      ~/Areas/{2}/Views/{1}/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/{1}/{0}.vbhtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/Shared/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/Shared/{0}.vbhtml
    
      "
    
       };
 
    
      base
    
      .AreaPartialViewLocationFormats 
    
      =
    
       
    
      new
    
       
    
      string
    
      [] { 
    
      "
    
      ~/Areas/{2}/Views/{1}/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/{1}/{0}.vbhtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/Shared/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/Areas/{2}/Views/Shared/{0}.vbhtml
    
      "
    
       };
 
 
    
      base
    
      .ViewLocationFormats 
    
      =
    
       
    
      new
    
       
    
      string
    
      [] { 
    
      "
    
      ~/T/{1}/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/T/Shared/{0}.cshtml
    
      "
    
       };
 
    
      base
    
      .MasterLocationFormats 
    
      =
    
       
    
      new
    
       
    
      string
    
      [] { 
    
      "
    
      ~/T/{1}/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/T/Shared/{0}.cshtml
    
      "
    
       };
 
    
      base
    
      .PartialViewLocationFormats 
    
      =
    
       
    
      new
    
       
    
      string
    
      [] { 
    
      "
    
      ~/T/{1}/{0}.cshtml
    
      "
    
      , 
    
      "
    
      ~/T/Shared/{0}.cshtml
    
      "
    
       };
 
 
    
      base
    
      .FileExtensions 
    
      =
    
       
    
      new
    
       
    
      string
    
      [] { 
    
      "
    
      cshtml
    
      "
    
      , 
    
      "
    
      vbhtml
    
      "
    
       };
 }

 
    
      protected
    
       
    
      override
    
       IView CreatePartialView(ControllerContext controllerContext, 
    
      string
    
       partialPath)
 {
 
    
      string
    
       layoutPath 
    
      =
    
       
    
      null
    
      ;
 
    
      bool
    
       runViewStartPages 
    
      =
    
       
    
      false
    
      ;
 IEnumerable
    
      <
    
      string
    
      >
    
       fileExtensions 
    
      =
    
       
    
      base
    
      .FileExtensions;
 
    
      return
    
       
    
      new
    
       RazorView(controllerContext, partialPath, layoutPath, runViewStartPages, fileExtensions, 
    
      base
    
      .ViewPageActivator);
 }

 
    
      protected
    
       
    
      override
    
       IView CreateView(ControllerContext controllerContext, 
    
      string
    
       viewPath, 
    
      string
    
       masterPath)
 {
 
    
      string
    
       layoutPath 
    
      =
    
       masterPath;
 
    
      bool
    
       runViewStartPages 
    
      =
    
       
    
      true
    
      ;
 IEnumerable
    
      <
    
      string
    
      >
    
       fileExtensions 
    
      =
    
       
    
      base
    
      .FileExtensions;
 
    
      return
    
       
    
      new
    
       RazorView(controllerContext, viewPath, layoutPath, runViewStartPages, fileExtensions, 
    
      base
    
      .ViewPageActivator);
 }


 }
   
     

 

上面是原Razor视图引擎的构造类，我只是拷贝下来修改修改我希望的目录结构，比如将原Views目录改成了T，然后在程序初始化的时候，注册加入这个自己的视图引擎类。

ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new myViewEngine());

将项目中Views目录改名T，调试成功。这样，以后的目录结构我们自己可以任意定义。非常方便。

 

但是，有人可能会说那6个目录定义属性都是public的，可以直接调出来修改，结果我也这样试过，没成功，无论我直接调用RazorViewEngine封装，还是VirtualPathProviderViewEngine继承后为属性设定值。都没成功，可能我的方法有问题。 如果你知道，希望可以告诉我。

 

另外这样自定义目录结构后，在View和Controller之间不能定位了，VS环境还是认为Views目录是视图文件目录，自己定义的T目录没有了“脚手架”...