标记帮助程序中当前登录的用户

Question

使用asp.net核心，是否可以将当前登录的用户置于标记帮助程序类中？

让我们假设这个标签帮助者：

if var1 < [var2 thru var3] < var4

我知道在控制器中我们有一个＆＃34;用户＆＃34;属性可以使用，但在其他类中不可用。

Answer 1

您可以将IHttpContextAccessor注入LessonTagHelper

private readonly ILessonServices lessonService;
private readonly UserManager<ApplicationUser> userManager;
private readonly IHttpContextAccessor httpContextAccessor;

public LessonTagHelper(ILessonServices lessonService, UserManager<ApplicationUser> userManager, IHttpContextAccessor httpContextAccessor)
{
        this.lessonService = lessonService;
        this.userManager = userManager;
        this.httpContextAccessor = httpContextAccessor;
}

然后在您需要的地方，您可以像httpContextAccessor.HttpContext.User ...

一样访问用户

不要忘记IHttpContextAccessor service is not registered by default，所以

services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();