codeigniter - jquery登录函数不调用/返回

Question

I have a login function in my controller that was getting called before, but i did some changes and it all just stopped.

I have a basic login with 2 inputs for a username/password and a submit

//Javascript

function initLogin(e) {
    e.preventDefault()
    var d = {
        user: $('#userName').val(),
        password: $('#password').val()
    }

    console.log('test')//gets returned

    $.post('/cms/login/',d,function(data) {
        console.log(data);//nothing returning
    },'json');
}

//Controller

class CMS extends CI_Controller {
    function __construct() {
        parent::__construct();

        $this->load->helper('url');
        $this->load->library('session');

        //$this->_check_if_logged_in();
    }

    private function _check_if_logged_in() {
        if (!$this->uri->segment(2) || $this->uri->segment(2) == 'login') return FALSE;
        if ($this->session->userdata('logged_in') != TRUE) redirect('/cms');
    }

    public function index() {
        if ($this->session->userdata('logged_in') == TRUE) redirect('/cms/home', 'refresh');

        $this->load->view('cms/log_in_view');
        $this->load->view('cms/parts/footer');
    }

    function login() {
        echo json_encode(array('test' => 'test'))//doesn't get echoed

        $data['user_name'] = $this->input->post('user');
        $data['pass_word'] = sha1($this->input->post('password'));

        $this->db->select('id');
        $res = $this->db->get_where('login',$data,1)->row_array();

        if (is_numeric($res['id'])) {
            $data['logged_in'] = TRUE;
            $this->session->set_userdata('logged_in',TRUE);
        }

        echo json_encode($res);
    }
}

Basically i commented out everything that I thought might get in the way of returning a response, but this is going against everything I've learned.

I'm convinced the login function in the controller doesn't get called, even though it did before when i didn't change anything in the js or login function itself

Answer 1

One flaw I see is that if you find no row, $res['id'] will make codeigniter print out a HTML error, which makes your json echo not work properly.

Try if (!empty($res)) instead.

You can check with the Firebug Console (Addon in Firefox) what the ajax-request gave for an answer to see if more then the json was echo'd.

Edit:

Noticed that's not the real problem. Will read it again.

Try changing class CMS extends CI_Controller to class Cms extends CI_Controller

That is CMS -> Cms