在ASP.NET Core中重写User.IsInRole

Question

I've got an MVC 6 website (asp.net core/5) where I need to check if a user is in specific roles or not from the razor pages. Whenever I call User.IsInRole("{rolename}") , it returns false everytime. If I just call my RoleRepository it works just fine.

Do I need to override the User.IsInRole() functionality someplace, or is that method obsolete in ASP.NET Core?

Here's my implementation so far:

        if (User.IsInRole("Admin") || User.IsInRole("SuperUser") || User.IsInRole("DataIntegrity"))
        {
            model.IsDataIntegrity = true;
        }

This works correctly when I call it via the Authorize policy, like this:

    [Authorize("DataIntegrity")]
    [ValidateAntiForgeryToken]
    [HttpPost]
    [Route("team/edit/{schoolId:int:min(1)}/{schoolName?}")]
    public async Task<IActionResult> Edit(SchoolEditViewModel model)
    {
        model.SchoolInfo = await _schoolRepo.GetSchoolInfo(model.SchoolId, _currentSeason);

        IsModelValid(model);
        if (!ModelState.IsValid)
        {
            return View(await ApplyUnboundProperties(model));
        }

        await SaveSchool(model);

        return RedirectToAction("Live", "SchoolMain", new {schoolId = model.SchoolId, schoolName = model.SchoolInfo.SchoolName});
    }

Answer 1

More googling and here's what I found works for me:

Checking login user AuthorizePolicy in Razor page on Asp.Net Core

More specifically, I needed to inject the IAuthorizationService into my views (or controllers), and then call the AuthorizeAsync method.

(In View)

@inject IAuthorizationService AuthorizationService

...

@if (await AuthorizationService.AuthorizeAsync(User, "PolicyName"))
{
    <p>This paragraph is displayed because you fulfilled PolicyName.</p>
}