Question

Hey all I am working on a json call that will implement Drupal’s services module with json. I am using jquery’s ajax function to call the function but I am getting an error stating that no parameters are being passed. When I look at the query string being posted I notice that sessid is not being passed even though its with the parameters. Below is what Im running.

// JavaScript Document
$(document).ready(function() {

    function drupalConnect(src) {
        $.ajax({
            url: src,
            type: 'POST',
            data: {
                method: 'system.connect'
            },
            success: function(data) {
                return data["result"]["sessid"];
            }
        });
    }

    function getTimestamp() {
        return Math.round((new Date).getTime() / 1000);
    }

    function randString(length) {
        var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
        var randomstring = '';
        for (var i = 0; i < length; i++) {
            var rnum = Math.floor(Math.random() * chars.length);
            randomstring += chars.substring(rnum, rnum + 1);
        }
        return randomstring;
    }


    var session_id = drupalConnect('http://localhost/drupal/services/json-rpc');
    var nonce = randString(10);
    var timestamp = getTimestamp();
    var username = "markusgray";
    var password = "Markus1990";
    var key = '2ae0392e0aebbfeeddefcc962ea1924f';
    var domain = 'localhost';

    var hashObj = new jsSHA(timestamp + ";" + domain + ";" + nonce + ";user.login", "TEXT");
    var hash = hashObj.getHMAC(key, "TEXT", "SHA-256", "HEX");

    var parameters = {
        hash: hash,
        domain_name: domain,
        domain_time_stamp: timestamp,
        nonce: nonce,
        sessid: session_id,
        username: username,
        password: password
    };

    var par = JSON.stringify(parameters);

    $.ajax({
        url: 'http://localhost/drupal/services/json-rpc',
        type: 'POST',
        dataType: 'json',
        data: {
            method: 'user.login',
            params: par
        },
        success: function() {

        }
    });
});​

Answer 1

drupalConnect doesn’t return anything, also the return from the success callback is just thrown away. The best way to use the data returned from an ajax call is to use it in thee callback itself.

function drupalConnect(src){
    $.ajax({
        url: src,
        type: 'POST',
        data:{method:'system.connect'},
        success: function(data){
            var session_id = data["result"]["sessid"]; 
            //use session_id here
        }
    });
}