blazor - How is the route "/authentication/login" wired to "_LoginPartial.cshtml"?

Question

I created an app via dotnet new blazorwasm --hosted --auth Individual. It worked as expected. I then edited this app in a few ways and now it's broken. /authentication/login now only displays a blank page:

And I notice that, in my Server project, I'm not hitting _LoginPartial.cshtml breakpoints here or here, where I previously was.

• Y problem: I'm not hitting breakpoints in _LoginPartial.cshtml -- what mechanism "wires" the route authentication/login to that file?
• X problem: I only get blank pages on any attempt to authenticate.

question from:https://stackoverflow.com/questions/65839128/how-is-the-route-authentication-login-wired-to-loginpartial-cshtml

Answer 1

The "wiring" I was looking for was this using directive:

@page "/authentication/{action}"
@using Microsoft.AspNetCore.Components.WebAssembly.Authentication
<RemoteAuthenticatorView Action="@Action" />

@code{
    [Parameter] public string Action { get; set; }
}

Rider marks this as "not required" and will remove it on Code Cleanup.