asp.net - 使用 asp.net mvc 管理模型类中的会话变量

Question

我有一个 asp.net mvc4 应用程序，其中有这个片段：

   public bool Logout() {
            try {
                session["user"] = null;
                return true;
            }
            catch {
                return false;
            }
                          }

当我将此代码放在控制器中时，它可以工作，但是如果我将其放在模型类中，则没有。问题出在session["user"] = null;.

那么如何在模型类中管理会话的变量呢？

Answer 1

In class access by the current context :

HttpContext.Current.Session["user"]....

Answer 2

This functionality should not be in a view model. The model should be used for passing data from controllers to views for displaying, and receiving submitted data from views.

See a question like What is a ViewModel in MVC to get a better explanation.

A logout function should be an action on a controller. Something like:

public ActionResult Logout()
{
    Session["user"] = null;

    // Redirect user to homepage
    return Redirect("/");
}