What is the basepage equivalent in MVC

Question

In my ASP.Net web sites I have the following code that I am able to use site-wide.
How do I do the same in ASP.Net MVC2?

public class BasePage : Page
{
 public BasePage()
 {
    this.PreInit += new EventHandler(BasePage_PreInit);
 }

 /// <summary>Every page executes this function before anything else.</summary>
 protected void BasePage_PreInit(object sender, EventArgs e)
 {
    // Apply Theme to page
    Page.Theme = "Default";
 }
 public bool IsSiteAdmin(string userName)
 {
    if (System.Web.Security.Roles.IsUserInRole(userName, "SiteAdmin1"))
        return true;
    return false;
 }
}

Answer 1

MVC has master pages and views. It sounds like you want your Controller to have some base logic in it instead of your page. In your controller you can select a different master page when rendering your views, based on your condition, if you want.

Answer 2

Not sure how themes fit into MVC (not very well I suspect), but in general you just need to create a base controller class.

public class BaseController : Controller

and then derive all your controllers off this base.

public class HomeController : BaseController

That way, you can have common functionality available to all controllers. eg your IsSiteAdmin method.

Answer 3

As zaph0d said, you want to override the Controller class. There are several "events" you can override when creating your own Controller class. A list of those would be here:

http://msdn.microsoft.com/en-us/library/system.web.mvc.controller_members.aspx

Here's what you might want to do. Note that I have no idea what Page.Theme is or does.

public class BaseController : Controller
{
    protected string Theme { get; set; }

    protected override void OnActionExecuting(ActionExecutingContext context)
    {
        Theme = "Default";
    }

    public bool IsSiteAdmin(string userName)
    {
        return System.Web.Security.Roles.IsUserInRole(userName, "SiteAdmin1");
    }
}