.net mvc single admin section multiple sites

Desired outcome:

4 customer facing sites as separated projects 1 set of admin code used by all four sites

My current setup is 4 Projects:

Core for models/entities
Data for repositories
Controllers for, well, controllers
Web for views

Now, the Web project contains views for admin and customer facing sides. I'm wanting to split that into an admin project and 4 'customer' projects.

I've google with little success about referencing a web app from a web app. I've read about areas on haacked.com, but that doesn't seem quite right. I don't particularly want to embed views in a dll, since that would be a pain while debugging/coding markup. Obviously I don't want multiple copies of the code.

Can anyone point out or suggest possible ways to do this? I'm a bit stumped.

Solution

If the reason behind splitting the project into 4 webprojects is that customers have different views try this:

Have 1 webproject and use a subfolder for views that differ.

Views/Home/About.aspx (used if no matching subfolder found )
Views/Home/Customer1/About.aspx
Views/Home/Customer2/About.aspx

You can have a custom viewengine that decides which view it should render. Each installation of the web has a customer defined in the web.config.

public class MultiTennantWebFormViewEngine : WebFormViewEngine
{
  private static string[] LocalViewFormats = 

   new string[] {
       "~/Views/{1}/" +  ApplicationConfiguration.CustomerName + "/{0}.aspx",
    "~/Views/{1}/{0}.aspx",
    "~/Views/{1}/" + ApplicationConfiguration.CustomerName  +   "/{0}.ascx",
    "~/Views/{1}/{0}.ascx",
    "~/Views/Shared/{0}.aspx",
    "~/Views/Shared/{0}.ascx"
};

  public LocalizationWebFormViewEngine()
  {      
    base.ViewLocationFormats = LocalViewFormats;
     base.PartialViewLocationFormats = LocalViewFormats;
     base.MasterLocationFormats = new string[] {

          "~/Views/{1}/" +  ApplicationConfiguration.CustomerName  + "/{0}.master",
          "~/Views/{1}/{0}.master",
           "~/Views/Shared/"  +  ApplicationConfiguration.CustomerName  + "/{0}.master",
            "~/Views/Shared/{0}.master"
      };
}

}