确定谁请求了操作方法

所以，我有两个动作方法A= public ActionResult PlaceOrder(PlaceOrderVM model)和B= public ActionResult IngredientsDeficiency()。我想知道IN B是否B是从a重定向的结果，或者是一般重定向的结果。我只是想防止用户自己请求方法B。但如果从服务器重定向，他们可以看到视图。希望有人能理解…

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作品

[HttpPost]
    [Authorize]
    [ValidateAntiForgeryToken]
    public ActionResult PlaceOrder(PlaceOrderVM model)
    {
        if (ModelState.IsValid)
        {
            var cosumed = _pizzaRepository.TryConsumeIngredients(model.PizzaId);
            if (cosumed == false)
            {
                return View("IngredientsDeficiency");
            }
            _pizzaRepository.InsertOrder(model);
            _pizzaRepository.Save();
            return RedirectToAction("Orders", "User");
        }
        return View(model);
    }

不工作

[HttpPost]
    [Authorize]
    [ValidateAntiForgeryToken]
    public ActionResult PlaceOrder(PlaceOrderVM model)
    {
        if (ModelState.IsValid)
        {
            var cosumed = _pizzaRepository.TryConsumeIngredients(model.PizzaId);
            if (cosumed == false)
            {
                return RedirectToAction("IngredientsDeficiency");
            }
            _pizzaRepository.InsertOrder(model);
            _pizzaRepository.Save();
            return RedirectToAction("Orders", "User");
        }
        return View(model);
    }
    [ChildActionOnly]
    public ActionResult IngredientsDeficiency()
    {
        return View("IngredientsDeficiency");
    }

Error: The action 'IngredientsDeficiency' is accessible only by a child request.