将所有区域，控制器和动作作为树获取 [英] Get all Area, Controller and Action as a tree

问题描述

我需要获取已注册为列表的所有区域，并将其所有控制器作为子列表，并且要进行相同的操作.像这样的东西:

I need to get all areas that has been registered as list and all of their controllers as a sub list and the same thing for actions. something like this:

AdminArea
   HomeController
     Index
     Add
     ...
   OtherController
   ...
AnotherArea
   HomeController
      Index
      ...
...

我已经检查了这个问题的答案一个，但它们不是我所需要的寻找. 第一个返回所有已注册的路由，第二个立即返回所有控制器.

I have checked the answer of this question, and this one, but they are not what i'm looking for. The first one return all the routes that has been registered and the second one return all controllers at once.

更新

好吧，使用下面的代码，我可以获取所有区域，并且通过第二个问题的答案，我可以获取所有控制器，但是我无法弄清楚每个控制器属于哪个区域.

Ok, with the below code i can get all the areas and with the answer of the second question i can get all the controllers, but i can't figure it out each controller belong to what area.

var areaNames = RouteTable.Routes.OfType<Route>()
            .Where(d => d.DataTokens != null && d.DataTokens.ContainsKey("area"))
            .Select(r => r.DataTokens["area"]).ToList()
            .Distinct().ToList();

推荐答案

这就是我想出的，这正是我想要的. 希望对您有所帮助.

So here is what i came up with, it's exactly what i wanted. I hope it will be helpful.

    public virtual ActionResult Index()
    {
        var list = GetSubClasses<Controller>();

        // Get all controllers with their actions
        var getAllcontrollers = (from item in list
            let name = item.Name
            where !item.Name.StartsWith("T4MVC_") // I'm using T4MVC
            select new MyController()
            {
                Name = name.Replace("Controller", ""), Namespace = item.Namespace, MyActions = GetListOfAction(item)
            }).ToList();

        // Now we will get all areas that has been registered in route collection
        var getAllAreas = RouteTable.Routes.OfType<Route>()
            .Where(d => d.DataTokens != null && d.DataTokens.ContainsKey("area"))
            .Select(
                r =>
                    new MyArea
                    {
                        Name = r.DataTokens["area"].ToString(),
                        Namespace = r.DataTokens["Namespaces"] as IList<string>,
                    }).ToList()
            .Distinct().ToList();


        // Add a new area for default controllers
        getAllAreas.Insert(0, new MyArea()
        {
            Name = "Main",
            Namespace = new List<string>()
            {
                typeof (Web.Controllers.HomeController).Namespace
            }
        });


        foreach (var area in getAllAreas)
        {
            var temp = new List<MyController>();
            foreach (var item in area.Namespace)
            {
                temp.AddRange(getAllcontrollers.Where(x => x.Namespace == item).ToList());
            }
            area.MyControllers = temp;
        }

        return View(getAllAreas);
    }

    private static List<Type> GetSubClasses<T>()
    {
        return Assembly.GetCallingAssembly().GetTypes().Where(
            type => type.IsSubclassOf(typeof(T))).ToList();
    }

    private IEnumerable<MyAction> GetListOfAction(Type controller)
    {
        var navItems = new List<MyAction>();

        // Get a descriptor of this controller
        ReflectedControllerDescriptor controllerDesc = new ReflectedControllerDescriptor(controller);

        // Look at each action in the controller
        foreach (ActionDescriptor action in controllerDesc.GetCanonicalActions())
        {
            bool validAction = true;
            bool isHttpPost = false;

            // Get any attributes (filters) on the action
            object[] attributes = action.GetCustomAttributes(false);

            // Look at each attribute
            foreach (object filter in attributes)
            {
                // Can we navigate to the action?
                if (filter is ChildActionOnlyAttribute)
                {
                    validAction = false;
                    break;
                }
                if (filter is HttpPostAttribute)
                {
                    isHttpPost = true;
                }

            }

            // Add the action to the list if it's "valid"
            if (validAction)
                navItems.Add(new MyAction()
                {
                    Name = action.ActionName,
                    IsHttpPost = isHttpPost
                });
        }
        return navItems;
    }

    public class MyAction
    {
        public string Name { get; set; }

        public bool IsHttpPost { get; set; }
    }

    public class MyController
    {
        public string Name { get; set; }

        public string Namespace { get; set; }

        public IEnumerable<MyAction> MyActions { get; set; }
    }

    public class MyArea
    {
        public string Name { get; set; }

        public IEnumerable<string> Namespace { get; set; }

        public IEnumerable<MyController> MyControllers { get; set; }
    }

为了采取行动，我使用了此答案.

For getting actions, i used this answer.

如果您有更好的方法，请告诉我.

If you have any better ways, please let me know.

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