How to pass data from controller to view via json on CodeIgniter?

Question

I'm trying to pass data from controller to view via json, after event in my main login page. Login page js looks like:

$('#submit_loginform').live('click',function(){

    $("#error_message").fadeIn(500).html("<img src='images/loaders/loader2.gif' alt='loading' />"); // debug message area

    //var login_name  = $("#login").val();
    //var pass        = $("#pass").val();

    var data        = {
        name        : $("#login").val(),
        password    : $("#password").val(),
        ajax        : 1
    }

    $.ajax({
        url: "home/login_validation", // my home controller function "login_validation:
        type: 'POST',
        dataType: 'json',
        data: data,
        success: function (data) {

            if(data.message){
              alert(data.message);
            } 
        },
        error: function (e) {
            console.log(e.message);
        }
    });

 });

And my controller looks like:

    <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Home extends CI_Controller {

    public function index(){

       $data = array(
            "text" => "Welcome",
            "time" => date("Y/m/d")
       );

       $this->load->view('home_view.php', $data);
    }

    public function login_validation(){

        $array = array(
            "message" => "all things are beutiful"
        );

        $data['json'] = json_encode($array);
        $this->load->view('login_view.php', $data);        
    }

}

and after all, when I'm trying to submit data, I should receive an alert with text "all things are beutiful", but the alert is not "poping up".

Btw i checked it with firebug for response, and the response is the same HTML code from my home_view file.

What is wrong? What I should do to receive normall response from controller?

what is in login_view.php?

dm03514
– dm03514

2013-07-26 15:44:07 +00:00
Commented Jul 26, 2013 at 15:44 — dm03514
– dm03514, Commented Jul 26, 2013 at 15:44

dm03514 · Accepted Answer · 2013-07-26 15:57:21Z

1

your ajax function is expecting json as a response.

You could accomplish this by echoing json string directly, or having your view render one.

public function login_validation(){

    $array = array(
        "message" => "all things are beutiful"
    );

    $data['json'] = $array;
    echo json_encode($data);          
}

// js
alert(response.json.message);

edited Jul 26, 2013 at 15:57

answered Jul 26, 2013 at 15:46

dm03514

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3 Comments

baitas212123 Over a year ago

you right, now I'm receiving alert with text "{"json":"{\"message\":\"all things are beutiful\"}"}" in my data.json response. How should I convert it to array, that I can type only data.message and get "all things are beutiful" ?

baitas212123 Over a year ago

one more thing, how should I receive input value? I tried "message" => $this->input->post('login') but it's not working for me.. input name is login // edit -> oops, i'm dealed with that too

dm03514 Over a year ago

@user2304363 it doesn't look like you are posting a login param $this->input->post('name')

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