ASP.NET MVC - Write less code for route template - c#

This is my code:
routes.MapRouteLowercase(
name: "productadd",
url: "product/add",
defaults: new
{
controller = "Product",
action = "Add"
}
, namespaces: new[] { "project.Controllers" });
routes.MapRouteLowercase(
name: "productlike",
url: "product/like",
defaults: new
{
controller = "Product",
action = "Like"
}
, namespaces: new[] { "project.Controllers" });
routes.MapRouteLowercase(
name: "productshow",
url: "product/{id}/{seoName}",
defaults: new
{
controller = "Product",
action = "Get",
id = UrlParameter.Optional,
seoName = UrlParameter.Optional
}
, namespaces: new[] { "project.Controllers" });
I want a solution for writing less codes, actually a template for productshow and another template for product actions

you can use Attribute Based Routing in MVC. This is available by default in MVC5, or can be installed as a NuGet package in MVC4.
With Attribute Based Routing, you can define Attributes on your action methods, rather than magic string matches in the routing table. You can also perform more advanced type checking, such as minimum and maximum values, and optionally name routes for easy reference in your Razor.
as an example:
[RoutePrefix("product")]
public class ProductController : Controller {
//route /product
[Route]
public ActionResult Index() { ... }
//route /product/add
[Route("add")]
public ActionResult Add() { ... }
//route /product/like
// Like
[Route("like", Name="productlike")]
public ActionResult Like() { ... }
//route /product/{id}/{seoName}
[Route("{id?}/{seoName?}")]
public ActionResult Get(int? id, string seoName) { ... }
}

Saman, you can create a default route, like this one below. I'm not sure if that will work with "MapRouteLowercase", you can give it a try.
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new {
controller = "Home",
action = "Index",
id = UrlParameter.Optional }
);
This link has more options if you want.

Related

How to remove Home from HomeController in Mvc

I have a HomeController and it has many Actions in it. I would like users to visit my actions without typing Home. Here is the Route below
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
I would like users not to enter controller name, which is Home in this case. How can I do that? Or is it mandatory?
You can add custom route before defult route like this:
routes.MapRoute(
"OnlyAction",
"{action}",
new { controller = "Home", action = "Index" }
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
Solution 01 (attribute routing)
Add below line on the top of the other routes in RouteConfig
routes.MapMvcAttributeRoutes();
Then add an attribute route on top of each action as you want. (actions in the home controller in this case)
eg. Below code sample will remove "/Home" from http://site/Home/About and be available on http://site/About
[Route("About")]
public ActionResult About()
{
Solution 02 (using a Route constraint) [ Source ]
Add a new route mapping to RouteConfig as below. (Remember to add these specific routes before the default (generic) routes.
routes.MapRoute(
"Root",
"{action}",
new { controller = "Home", action = "Index", id = UrlParameter.Optional },
new { isMethodInHomeController = new RootRouteConstraint<HomeController>() }
);
This will remove "Home" from all the actions (routes) of the Home controller
RootRouteConstraint class
public class RootRouteConstraint<T> : IRouteConstraint
{
public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
{
var rootMethodNames = typeof(T).GetMethods().Select(x => x.Name.ToLower());
return rootMethodNames.Contains(values["action"].ToString().ToLower());
}
}
Optional Info: This line (constraint) will make sure to apply this routing only for the HomeController
new { isMethodInHomeController = new RootRouteConstraint<HomeController>

ASP.NET MVC 5 routing restriction

I've updated my code to use Area as suggested but the problem still exist. /dashboard is still available.
My Controllers folder has HomeController and AccountController. I have Areas/Admin/Controllers/DashboardController.cs
Problem:
My area admin controller can be accessed like this /admin/dashboard, but the problem is it can also be accessed using /dashboard -> this should show 404
here is my RouteConfig:
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
namespaces: new[] { "project.Controllers" }
);
AdminAreaRegistration:
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"Admin_default",
"Admin/{controller}/{action}/{id}",
new { action = "Index", id = UrlParameter.Optional },
namespaces: new[] { "project.Areas.Admin.Controllers" }
);
}
The /dashboard call is routed by the Default routing rule.
You can make the Default not to process the calls made to the dashboard controller by adding a constraint.
For example:
In the default routing rule you can add a constraint like the following:
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
namespaces: new[] { "project.Controllers" },
constraints: new { controller = new Constraints.IsNotDashboard() }
);
Then, you can declare the constraint like this:
using System.Web;
using System.Web.Routing;
public class IsNotDashboard : IRouteConstraint
{
public IsNotDashboard()
{
}
public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
{
string controller = values["controller"].ToString().ToLower();
return controller != "dashboard";
}
}
With this constraint, all calls that match the dashboard controller will not be processed by the Default routing rule.
Thanks guys.
After searching the net, I finally found what works best for my problem.
The problem was that all controllers are being handled as well in Default route, so I just added controller constraints to Default. This way Default route will only accept request on specified controllers. Below is my new RouteConfig
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
constraints: new { controller = #"(Account|Manage|Home)" }
);

Setting custom MVC routes with fixed parts

I have 2 controllers:
public class HomeController : Controller
{
public ActionResult Index(string id) //id is category slug
{
if(string.IsNullOrEmpty(id))
id = "MainCategory";
var model = getCategoryPageModel(id);
return View(model);
}
}
public class PostController : Controller
{
public ActionResult Index(string id) //id is post slug
{
var model = getPostModel(id);
return View(model);
}
}
And this is my route config:
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
//angular route for admin section
routes.MapRoute(
name: "AngularCatchAllRoute",
url: "Admin/{*any}",
defaults: new { controller = "Admin", action = "Index"}
);
//route which includes language
routes.MapRoute(
name: "DefaultLocalized",
url: "{lang}/{controller}/{action}/{id}",
constraints: new { lang = #"(\w{2})|(\w{2}-\w{2})" }, // en or en-US
defaults: new { controller = "Home", action = "Index", id = "" }
);
//do I need this one??
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
}
I want to have two types of custom routes:
www.mysite.xyz/categoryName - calls Home/Index/id with default language ('sr')
www.mysite.xyz/en/categoryName - calls Home/Index/id with language 'en'
www.mysite.xyz/Post/postID - calls Post/Index/id with default language('sr')
www.mysite.xyz/en/Post/postID - calls Post/Index/id with language 'en'
My 'DefaultLocalized' route already works fine with default and custom language route part, but my url has to contain all route parts: controller/action/id. I just want to simplyfy urls to be more readable to users.
Actually I made it work for post with 'lang' to be mandatory:
www.mysite.xyz/sr/Post/postID - but I want 'sr' to be default like in 'DefaultLocalized' route, there I don't have to set lang to be 'sr'...
I already have tried some answers from other similar questions but I did not make it work.
You can use attribute routing as below:
[Route("~/{cate}")]
[Route("{lang}/{cate}")]
public IActionResult Index(string lang, string cate)
{
return View();
}
That work for me with urls:
http://[host]/Mobile
http://[host]/en/Mobile
Hope this help!

I cannot figure out RouteConfig.cs file

I am very new to MVC and trying to build my first website. I couldnt set my RouteConfig file properly. I have 2 rules that apply to different ActionResults. But, only one of them works properly. if GetProducts is above the GetProductByCode, then GetProducts works. If GetProductByCode is above the GetProducts, then GetProductByCode works. What am I doing wrong?
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "GetProducts",
url: "{controller}/{action}/{PageNo}",
defaults: new { controller = "Home", action = "GetProducts", PageNo = UrlParameter.Optional }
);
routes.MapRoute(
name: "GetProductByCode",
url: "{controller}/{action}/{ProductCode}",
defaults: new { controller = "Home", action = "GetProductByCode", ProductCode = UrlParameter.Optional }
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
}
My Solution is like below
routes.MapRoute(
name: "GetProducts",
url: "{controller}/GetProducts/{PageNo}",
defaults: new { controller = "Home", action = "GetProducts", PageNo = UrlParameter.Optional }
);
routes.MapRoute(
name: "GetProductByCode",
url: "{controller}/GetProductByCode/{ProductCode}",
defaults: new { controller = "Home", action = "GetProductByCode", ProductCode = UrlParameter.Optional }
);
If you look at the default route:
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
Then think of the portion after url: as a format or pattern:
{controller}
{action}
{id}
Your 3 URLs Home/GetProducts, Home/GetProductsByCode and Home/Index all match this pattern.
With the {action} portion being GetProducts, GetProductsByCode and Index respectively.
You would need to leverage routing if you wanted to map the parameter to a variables called PageNo or ProductCode in the Action, but in general you don't need routes for each possible combination. If your parameters in these actions are id then it will just work without you needing to create routes for each.
E.g.
public ActionResult GetProducts(int id)
{
// stuff
}
public ActionResult GetProductsByCode(string id)
{
// stuff
}
To have the parameter names, specify the controller and action explicitly:
routes.MapRoute(
name: "GetProducts",
url: "Home/GetProducts/{PageNo}",
defaults: new { controller = "Home", action = "GetProducts", PageNo = UrlParameter.Optional }
);
routes.MapRoute(
name: "GetProductByCode",
url: "Home/GetProductsByCode/{ProductCode}",
defaults: new { controller = "Home", action = "GetProductByCode", ProductCode = UrlParameter.Optional }
);
And
public ActionResult GetProducts(int PageNo)
{
// stuff
}
public ActionResult GetProductsByCode(string ProductCode)
{
// stuff
}
But in general, only define custom routes that differ from the normal {controller}/{action}/{id} pattern.
The default section of MapRoute means that if it can't find a controller and action that exists in your code base use these instead. It's a fallback, not the functionality driver.
All 3 routes are identical in that they contain 3 segments (the controller name, action name and an optional parameter) and which ever of the 3 are placed first will always be hit.
If you want GetProducts to be hit the you could modify the definition to
routes.MapRoute(
name: "GetProducts",
url: "Home/GetProducts/{PageNo}",
defaults: new { controller = "Home", action = "GetProducts", PageNo = UrlParameter.Optional }
);
although there seems no real point. If you just changed the name of the parameter in the GetProducts() and GetProductByCode() to id then the only route definition you require is the Default
There is not way for asp.net to understand if the last parameter is /{ProductCode}", or {ProductCode}", since the action is the same - so your URL looks the same,
Therefor only the first match is taken, a solution would be using a full query string since the /{id} is just a shorthand for id=5 in the query string

ASP.NET MVC ActionLink not selecting correct controller

Question background:
I'm trying to pass an variable - in this case an int 'productId' variable' in the url to a controller and action method specified in the ActionLink method.
The issue:
My routes are set as follows:
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Login", action = "Login", id = UrlParameter.Optional }
);
routes.MapRoute(
name: "ProductDetailHandler",
url: "{controller}/{action}/{productId}",
defaults: new { controller = "Product", action = "ProductDetail", productId = UrlParameter.Optional }
);
My 'ActionLink' in my 'Products.cshtml' view - which is returned by a controller called 'HomePageController' is set as follows:
#Html.ActionLink("Product", "ProductDetail", new { productId = (ViewBag.data as List<LoginTest.Models.HomePageItem>).First().Id })
The controller that receives the passed 'productId' along with its action method is set as follows:
public class ProductController : Controller
{
public ActionResult ProductDetail(int productId)
{
//logic
return View();
}
}
This is the issue, when looking at the URL it is shown to be redirecting to the 'HomePage' controller:
If someone could tell me why my ActionLink is not going to the Product controller that would be great.
EDIT:
This is the 'Homepage' view that I click a button to redirect me to 'product/productDetail/productId'
My route now just features the 'Default example':
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Login", action = "Login", id = UrlParameter.Optional }
);
The Action Link is now:
#Html.ActionLink("Product", "ProductDetail", "Product", new { id = (ViewBag.data as List<LoginTest.Models.HomePageItem>).First().Id })
The 'Product/ProductDetail' controller and action method now looks like:
public class ProductController : Controller
{
public ActionResult ProductDetail(int id)
{
string hold;
return View();
}
}
This still is giving me the the incorrect URL, as shown, note the 'productId' is now showing as 'length'?
Since the link is on a page rendered by HomePageController the default is to use that controller in the route. You need to use the overload that accepts a controller name
#Html.ActionLink("Your link text", "ProductDetail", "Product", new { id = 1 }, null)
As a side note, your original route table would have created /Product/ProductDetail?productId =1 with this overload because it matches the default route which is the first route in your table (the order of routes is important). In order to have /Product/ProductDetail/1, either reverse the order of the routes or just change the parameter of ProductDetail to int id rather than int productId
Make sure you are using an overload that has controllerName in it, as shown in the following screenshot.
When I remove routeValues: null, it uses a different overlaod which has routeValue as third paramater.
Try this:
routes.MapRoute(
name: "ProductDetailHandler",
url: "Product/{action}/{productId}",
defaults: new { controller = "Product", action = "ProductDetail", productId = UrlParameter.Optional }
);
routes.MapRoute
(
"Default",
"{controller}/{action}/{id}",
new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
Not sure what you are trying to do with the Login controller. Maybe you can put log-in on your Home page or redirect the Home/Index to Login.
Also you can specify the default namespace if it doesn't find your controller:
routes.MapRoute(
name: "ProductDetailHandler",
url: "Product/{action}/{productId}",
defaults: new { controller = "Product", action = "ProductDetail", productId = UrlParameter.Optional },
new string[] { "MyProject.Controllers" }
);
routes.MapRoute
(
"Default",
"{controller}/{action}/{id}",
new { controller = "Home", action = "Index", id = UrlParameter.Optional },
new string[] { "MyProject.Controllers" }
);

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