session1.yaws.erl

-record(myopaque, {udata,
                   times = 0,
                   foobar}).

out(A) ->
    H = A#arg.headers,
    C = H#headers.cookie,
    case yaws_api:find_cookie_val("baz", C) of
        [] ->
            M = #myopaque{},
            Cookie = yaws_api:new_cookie_session(M),
            Data = {ehtml,
                    {html,[],
                     ["I just set your cookie to ", Cookie, "Click ",
                      {a, [{href,"session1.yaws"}], " here "},
                      "to revisit"]}},
            CO = yaws_api:setcookie("baz",Cookie,"/"),
            [Data, CO];
        Cookie ->
            case yaws_api:cookieval_to_opaque(Cookie) of
                {ok, OP} ->
                    OP2 = OP#myopaque{times = OP#myopaque.times + 1},
                    yaws_api:replace_cookie_session(Cookie, OP2),
                    Data = {ehtml,
                            {html,[],
                             [
                              "Click ",
                              {a, [{href,"session1.yaws"}], " here "},
                              "to revisit",
                              {p, [], f("You have been here ~p times",
                                        [OP2#myopaque.times])},
                              {p, [], f("Your cookie is ~s", [Cookie])}]}},
                    Data;
                {error, no_session} ->
                    new_session()
            end
    end.


new_session() ->
    M = #myopaque{},
    Cookie = yaws_api:new_cookie_session(M),

    Data = {ehtml,
            {html,[],
             ["I just set your cookie to ", Cookie, "Click ",
              {a, [{href,"session1.yaws"}], " here "},

              "to revisit"]}},
    CO = yaws_api:setcookie("baz",Cookie,"/"),
    [Data, CO].