Application Menu with Security Trimming

问题

I came from asp.net 2.0 webforms; where i just define my menu in Web.sitemap with all the trimming taken care off.

Is there any equivalent feature in asp.net-core-mvc for this seemingly easy task ?

回答1:

You can create a custom TagHelper for it, inside this tag helper you can check whether user is in apporperiate role or not:

public class SecurityTrimmingTagHelper : TagHelper
{
    [ViewContext]
    public ViewContext Context { get; set; }

    public override void Process(TagHelperContext context, TagHelperOutput output)
    {
        output.TagName = null;

        if (!Context.HttpContext.User.Identity.IsAuthenticated)
        {
            output.SuppressOutput();
        }

        if (Context.HttpContext.User.IsInRole("Admin"))
        {
            return;
        }

        output.SuppressOutput();
    }
}

来源：https://stackoverflow.com/questions/42240979/application-menu-with-security-trimming