ASP.NET core, change default redirect for unauthorized

Question

I am attempting to redirect to a different login url in ASP.NET MVC6

My account controller login method has a Route attribute to change the url.

Answer 1

I wouldn't recommend Serj Sagan solution in a real life example. This would work perfectly when developing but for a real application used by different types of user that might be misleading. Lets look at the below scenario

1. I am authenticated used
2. I know the url for a specific page
3. I am not authorize to access that pages

It means that I would be redirected to the login page as if I were not authenticated which is not the case. I would go more with mxmissile solution

Personnally I am using the AddMvcCore but you need to add AddRazorViewEngine if you are using razor views and AddRazorPages if you are using razor pages

        services.AddMvcCore(options =>
        {
            var policy = new AuthorizationPolicyBuilder()
                .RequireAuthenticatedUser()
                .Build();
            options.Filters.Add(new AuthorizeFilter(policy));
        })
        .AddRazorViewEngine()
        .AddAuthorization()
        .AddJsonFormatters();