Where do I put common Methods in MVC application

asp.net-mvc

Solution

Typically I will have one or more class library projects in the same solution to hold auxiliary classes. Create your classes in a class library project, then reference that project's DLL in your MVC web application. The exception to this would be any models, actual or view-only. These could be put in the Models folder.

Problem

I am used to having static methods in the App_Code folder, this folder is no longer available in MVC template. These static methods I use all over the site. How is it done in MVC, what is the best practice? How do you call the common methods?

Original source