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如何将路由数据从actionfilterattribute传递到action方法?

asp.net-core-mvc c#

Stian · 技术社区 · 6 年前

如果会话已过期,我将用户路由到登录视图,使用 ActionFilterAttribute ,如下所示。

现在,我想保留原始请求中的路由数据,以便在登录后将用户路由回该视图。

如何将原始路线数据发送到 Login 行动方法?

public class BaseController : Controller
{
    public int? BranchId {get => HttpContext.Session.GetInt32("BranchId") as int?;}
    public string Admin {get => HttpContext.Session.GetString("Admin") as string;}

    public BaseController() {}
}

public class AdminOrBranchesAccessAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext context)
    {
        base.OnActionExecuting(context);

        if ((context.Controller as BaseController).Admin == null &&
            (context.Controller as BaseController).BranchId == null)
        {
            context.Result = new RedirectToRouteResult(new RouteValueDictionary(new
            {
                controller = "Home",
                action = "Login"
            }));
        }
    }
}

[AdminOrBranchesAccess]
public async Task<IActionResult> Details(int? id)
{
    // Some stuff going on
    return View();
}

1 回复 | 直到 6 年前

Edward 6 年前

要在成功登录后重新选择上一个操作,需要为登录操作提供返回URL并在中设置其值。 OnActionExecuting .

变化 Login 方法如下,带参数 returnUrl

[HttpGet]
[AllowAnonymous]
public async Task<IActionResult> Login(string returnUrl = null)
{
    // Clear the existing external cookie to ensure a clean login process
    await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);

    ViewData["ReturnUrl"] = returnUrl;
    return View();
}

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Login(LoginViewModel model, string returnUrl = null)
{
    ViewData["ReturnUrl"] = returnUrl;
    if (ModelState.IsValid)
    {
        // This doesn't count login failures towards account lockout
        // To enable password failures to trigger account lockout, set lockoutOnFailure: true
        var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: true);
        if (result.Succeeded)
        {
            _logger.LogInformation("User logged in.");
            return RedirectToLocal(returnUrl);
        }
        if (result.RequiresTwoFactor)
        {
            return RedirectToAction(nameof(LoginWith2fa), new { returnUrl, model.RememberMe });
        }
        if (result.IsLockedOut)
        {
            _logger.LogWarning("User account locked out.");
            return RedirectToAction(nameof(Lockout));
        }
        else
        {
            ModelState.AddModelError(string.Empty, "Invalid login attempt.");
            return View(model);
        }
    }

    // If we got this far, something failed, redisplay form
    return View(model);
}

AdminOrBranchesAccessAttribute

public class AdminOrBranchesAccessAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext context)
    {
        base.OnActionExecuting(context);

        if ((context.Controller as BaseController).Admin == null &&
            (context.Controller as BaseController).BranchId == null)
        {
            context.Result = new RedirectToRouteResult(new RouteValueDictionary(new
            {
                controller = "Home",
                action = "Login",
                returnUrl = context.HttpContext.Request.Path
            }));
        }
    }
}