What does :: do?

Question

I have some inherited code that I am modifying. However, I am seeing something strange(to me).

I see some code like this:

::User.find_by_email(params         


        

Answer 1

It makes sure to load the User model in the global namespace.

Imagine you have a global User model and another User model in your current module (Foo::User). By Calling ::User you make sure to get the global one.