C#•4mo ago

✅ MVC application routing issue.

Why does the following code not work

                        <div>
                            <a asp-route-productId="@product.Id"
                               class="btn btn-primary bg-gradient border-0 form-control">
                                Details
                            </a>
                        </div>

                        <div>
                            <a asp-route-productId="@product.Id"
                               class="btn btn-primary bg-gradient border-0 form-control">
                                Details
                            </a>
                        </div>

But this code does

                        <div>
                            <a href="@Url.Action("Details", "Home", new { productId = product.Id })"
                               class="btn btn-primary bg-gradient border-0 form-control">
                                Details
                            </a>
                        </div>

                        <div>
                            <a href="@Url.Action("Details", "Home", new { productId = product.Id })"
                               class="btn btn-primary bg-gradient border-0 form-control">
                                Details
                            </a>
                        </div>

32 Replies

Angius•4mo ago

Because you did not specify the route Only the parameter of that route You need at least asp-action to point to the action the link supposed to link to And maybe even asp-controller if the controller is not the current one The second piece of code contains all those details, so it works

CydoOP•4mo ago

If you mean like so, the same issue persists.

                            <a
                                asp-controller="Home"
                                asp-action="Details"
                                asp-route-productId="@product.Id"
                                class="btn btn-primary bg-gradient border-0 form-control">
                                Details
                            </a>

                            <a
                                asp-controller="Home"
                                asp-action="Details"
                                asp-route-productId="@product.Id"
                                class="btn btn-primary bg-gradient border-0 form-control">
                                Details
                            </a>

CydoOP•4mo ago

I dont even get syntax highlighting with this

Angius•4mo ago

Huh Show the signature of the controller and action? Also, what .NET version?

CydoOP•4mo ago

.net 8.0 HomeController.cs

public IActionResult Details(int productId)
    {
        ShoppingCart cart = new()
        {
            Product = _unitOfWork.Product.GetFirstOrDefault(u => u.Id == productId, includeProperties: "Category"),
            Count = 1,
            ProductId = productId
        };
        return View(cart);
    }

    [HttpPost]
    [Authorize]
    public IActionResult Details(ShoppingCart shoppingCart)
    {
        Debug.WriteLine($"Count: {shoppingCart.Count}");


        var claimsIdentity = (ClaimsIdentity)User.Identity;
        var userId = claimsIdentity.FindFirst(ClaimTypes.NameIdentifier).Value;
        shoppingCart.ApplicationUserId = userId;

        ShoppingCart cartFromDb = _unitOfWork.ShoppingCart.GetFirstOrDefault(u =>
            u.ApplicationUserId == userId && u.ProductId == shoppingCart.ProductId);

        if (cartFromDb != null)
        {
            cartFromDb.Count += shoppingCart.Count;
            _unitOfWork.ShoppingCart.Update(cartFromDb);
        }
        else
        {
            _unitOfWork.ShoppingCart.Add(shoppingCart); 
        }


        
        _unitOfWork.Save();

        return RedirectToAction(nameof(Index));
    }

public IActionResult Details(int productId)
    {
        ShoppingCart cart = new()
        {
            Product = _unitOfWork.Product.GetFirstOrDefault(u => u.Id == productId, includeProperties: "Category"),
            Count = 1,
            ProductId = productId
        };
        return View(cart);
    }

    [HttpPost]
    [Authorize]
    public IActionResult Details(ShoppingCart shoppingCart)
    {
        Debug.WriteLine($"Count: {shoppingCart.Count}");


        var claimsIdentity = (ClaimsIdentity)User.Identity;
        var userId = claimsIdentity.FindFirst(ClaimTypes.NameIdentifier).Value;
        shoppingCart.ApplicationUserId = userId;

        ShoppingCart cartFromDb = _unitOfWork.ShoppingCart.GetFirstOrDefault(u =>
            u.ApplicationUserId == userId && u.ProductId == shoppingCart.ProductId);

        if (cartFromDb != null)
        {
            cartFromDb.Count += shoppingCart.Count;
            _unitOfWork.ShoppingCart.Update(cartFromDb);
        }
        else
        {
            _unitOfWork.ShoppingCart.Add(shoppingCart); 
        }


        
        _unitOfWork.Save();

        return RedirectToAction(nameof(Index));
    }

Angius•4mo ago

public IActionResult Details(int productId)

I assume it's a [HttpGet] action?

CydoOP•4mo ago

yes should i put the annotation aboive it regardless?

Angius•4mo ago

Well, yeah? Attributes is how you do routing

CydoOP•4mo ago

im following a course for .net mvc and he didnt do it, so i didnt do it lol

Angius•4mo ago

If you don't tell ASP that it's a GET endpoint, how is it supposed to know?

CydoOP•4mo ago

Even with that, it doesnt work the way it should

Angius•4mo ago

huh What HTML gets generated?

CydoOP•4mo ago

Angius•4mo ago

Well that's weird

CydoOP•4mo ago

yeah lol

Angius•4mo ago

Seems the tag helpers are not working

CydoOP•4mo ago

they are working in my other files tho idk why its just this one

Angius•4mo ago

Is this view placed somewhere else than other views? What's your Views/_ViewImports.cshtml file?

CydoOP•4mo ago

@using BulkyWeb
@using Bulky.Models;
@using Bulky.Models.ViewModels;
@using Bulky.Utility
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

@using BulkyWeb
@using Bulky.Models;
@using Bulky.Models.ViewModels;
@using Bulky.Utility
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

and its Areas/Customer/Views/Home/Index.cshtml

Angius•4mo ago

And the views where tag helpers work are somewhere else? You'll need to set up separate viewimports per area

CydoOP•4mo ago

Areas/Admin/Views/ has them working

CydoOP•4mo ago

but they are setup like that

Angius•4mo ago

Right are the viewimports files the same for each? This line is important here:

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

CydoOP•4mo ago

yup

Angius•4mo ago

It's in both viewimports files?

CydoOP•4mo ago

yeah

Angius•4mo ago

Well, I'm at a loss then Oh Actually Try adding asp-area as well?

CydoOP•4mo ago

still nothing ill keep bashing my head against the issue lol, been trying to solve it since early this morning xD I decided to just manually retype all this and save...

@using BulkyWeb
@using Bulky.Models
@using Bulky.Models.ViewModels
@using Bulky.Utility
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

@using BulkyWeb
@using Bulky.Models
@using Bulky.Models.ViewModels
@using Bulky.Utility
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

and now it works...

CydoOP•4mo ago

syntax highlighting too

Angius•4mo ago

Good ol' "turn it off and back on again" never fails lmao

CydoOP•4mo ago

hopefully this fixes my issue on why my add to cart page, saves 0 to my database no matter what number i put in the input as well yes, the tag helpers were the issue all the time, thanks for helping me so much, been at this since 9am lol, and its now 5pm xD

Angius•4mo ago

Anytime :Ok:

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✅ MVC application routing issue.