I’m watching Chris McCord’s original video on his design for Phoenix and I’m trying to follow along with the files that he is looking at because I really want to be able to follow a request from beginning to end, but I assume a lot of the files have changed their names and/or locations and/or purpose; or I’m just looking in completely the wrong place!
Just as an example, he mentions a file called mapper.ex that I can’t find in my generated app. Is it somewhere inside the actual phoenix installation? If so…then where is that?


















