Json undefined error

Question

I have action to edit then send json data

<?php
    public function btneditAction() {
    $data['id'] = $this->request->getPost('id');
    $data['uname'] = $this->request->getPost('uname');
    $data['basesalary'] = $this->request->getPost('basesalary');
    $data['travelfee'] = $this->request->getPost('travelfee');
    $data['overtime'] = $this->request->getPost('overtime');
    $data['ssc_emp'] = $this->request->getPost('ssc_emp');
    $data['ssc_comp'] = $this->request->getPost('ssc_comp');
    $Salarydetail = new SalaryMaster();
    $pont=$Salarydetail->btnedit($data);
    echo json_encode($pont);
    $this->view->disable();
}
?>

It shows in network is like this

{"valid":true} //when true {"valid":false}   //when false

I want to that valid value ,but when i alert ,it shows undefined only?

BtnEdit : function(val){
    var form=$('#edit_salary');
    $.ajax({
        type:'POST',
        data: form.serialize(),
        dataType:'json',
        url : "btnedit",
        success:function(d){
            alert(d.valid);      //undefined
            alert(d);            //{"valid":true}                     
        }
    });
}

Parse the `JSON` first. – Sougata Bose Aug 13 '15 at 07:59 — Sougata Bose, Aug 13 '15 at 07:59

score 7 · Accepted Answer · answered Aug 13 '15 at 08:00

7

Use JSON.parse to transform the string in an Object:

success:function(d){
    d = JSON.parse(d);
    alert(d.valid);      // true
}

answered Aug 13 '15 at 08:00

michelem

14,430
5
50
66

Muhammad Hassaan · Answer 2 · 2015-08-13T12:24:47.690

1

You need to use JSON.parse to transform the string in an Object:

Try

success:function(d){
    d = JSON.parse(d);
    alert(d.valid);
}

edited Aug 13 '15 at 12:24

answered Aug 13 '15 at 08:01

Muhammad Hassaan

7,296
6
30
50

You have talked about JSON.parse,But you have not used in your example ?? – Asim Shahzad Aug 13 '15 at 12:11
@AsimShahzad The example is under `try` in my answer. – Muhammad Hassaan Aug 13 '15 at 12:13
Sure i can see it,But please use the method you are talking about @Hassan – Asim Shahzad Aug 13 '15 at 12:15

yergo · Answer 3 · 2015-09-02T11:04:52.857

As of you are using Phalcon framework, I would recommend you to use it's built-in abilities to properly handle json responses:

$this->response->setContentType('application/json', 'UTF-8');
$this->response->setJsonContent($responseAsArray);
$this->response->send();

If header of application/json is included in response, jQuery starts to handle it properly and you do not need to JSON.parse your frame.

For handling json responses in API module in one of my applications I have a ControllerBase that extends \Phalcon\Mvc\Controller with this event handler:

use \Phalcon\Mvc\Controller;

class ControllerBase extends Controller {

/**
 * Captures method result and tries to make a JSON response out of it.
 * 
 * @param \Phalcon\Mvc\Dispatcher $dispatcher
 * @return \Phalcon\Http\Response
 */
protected function afterExecuteRoute($dispatcher) {

    $content = $dispatcher->getReturnedValue();

    if(is_object($content)) {
        if(is_callable(array($content, 'toArray'))) {
            $content = $content->toArray();
        } else {
            $content = (array) $content;
        }
    }

    $frame = $this->getFrame($content, $dispatcher); // protocol frame creation helper

    $this->response->setContentType('application/json', 'UTF-8');
    switch($frame['code']) {
        case 200:
            $this->response->setStatusCode(200, 'OK');
            break;
        case 400: 
            $this->response->setStatusCode(404, 'Not found');
            break;
        case 500: 
            $this->response->setStatusCode(503, 'Service Unavailable');
            break;
    }

    // clearing potential warnings
    $ob = ob_get_clean();
    if(strlen($ob) > 0) {
        /**
         * @todo some logging of $ob !
         * this will be a dead code if you will make an Error2Exception handler
         */
        echo($ob); die();
    }

    // settinf response content as JSON
    $this->response->setJsonContent($frame);

    return $this->response->send();
}
}

Json undefined error

I have action to edit then send json data

3 Answers3