How to pretty print conn content?

Question

I tried the following

def index(conn, _params) do
    Logger.debug conn
     ......

But I get

protocol String.Chars not impleme         


        

Answer 1

You can indeed use Kernel.inspect/2 to pretty-print the contents of the %Plug.Conn{} using:

def index(conn, _params) do
  :logger.info inspect(conn, pretty: true)
  ....
end

Note that previous answers using Logger should mention that you need to require Logger before you use it, as in:

require Logger

def index(conn, _params) do
  Logger.info inspect(conn, pretty: true)
  ....
end

Answer 2

Use inspect conn, pretty: true

... or:

inspect conn, pretty: true, limit: 30000

... since Conn structures are pretty big.

Answer 3

You should be able to use Kernel.inspect/2 to pretty print conn:

Logger.debug inspect(conn)

Answer 4

IO.inspect is well. I used in my side project, like ruby awsome_print