What does "plug" do?

[peerreynders]

@Papillon6814

I can only guess the “plug” is relevant to settings…

Question about Plug from the Programming Phoenix book

The long version: It would be more accurate to say that a Plug involves some kind of function that satisfies the (Plug.Conn.t, Plug.opts) :: Plug.Conn.t type signature. The documentation is also clear that: From what I can tell the 2nd parameter on (Plug.Conn.t, Plug.opts) :: Plug.Conn.t is useless (***) with a function plug - it exists only for compatibility with the module plug. The documentation’s example module plug looks like this: defmodule MyPlug do import Plug.Conn def init(o…

… so these “settings” drive code generation.