question for use library about rec2json HOT 2 CLOSED

There are a couple of problems here. First, the parse transform looks for a record with the same name as the module. So you would need to either create a 'user' module, or renamed the record to 'test_json'. Though if you do the first, you will end up with a collision with the existing 'user' module in the erlang standard library.

Next, the to_json/1 function is put into the same module, so you don't need to call `rec2json:to_json/1' directly, you can instead call '?MODULE:to_json/1'.

-module(user_json).

-compile([{parse_transform, rec2json}]).

-record(user_json, {
        userid :: binary(),
        username :: binary()
}).

-export([test/0]).

test()->
    Record = #user{userid= <<"james">>, username= <<"james chen">>},
    io:format("record=~p~n", [Record]),
    user_json:to_json(Record).

from rec2json.

Hi lordnull,

after reading your reply, I modified my code
It works correctly now

Thank you for your big help

from rec2json.