cowboy/test/http_SUITE_data/rest_param_all.erl

-module(rest_param_all).

-export([init/3]).
-export([allowed_methods/2]).
-export([content_types_provided/2]).
-export([get_text_plain/2]).
-export([content_types_accepted/2]).
-export([put_text_plain/2]).

init(_Transport, _Req, _Opts) ->
	{upgrade, protocol, cowboy_rest}.

allowed_methods(Req, State) ->
	{[<<"GET">>, <<"PUT">>], Req, State}.

content_types_provided(Req, State) ->
	{[{{<<"text">>, <<"plain">>, '*'}, get_text_plain}], Req, State}.

get_text_plain(Req, State) ->
	{{_, _, Param}, Req2} =
		cowboy_req:meta(media_type, Req, {{<<"text">>, <<"plain">>}, []}),
	Body = if
	Param == '*' ->
		<<"'*'">>;
	Param == [] ->
		<<"[]">>;
	Param /= [] ->
		iolist_to_binary([[Key, $=, Value] || {Key, Value} <- Param])
	end,
	{Body, Req2, State}.

content_types_accepted(Req, State) ->
	{[{{<<"text">>, <<"plain">>, '*'}, put_text_plain}], Req, State}.

put_text_plain(Req, State) ->
	{true, Req, State}.