CODEWITHSUNDEEP
phpajaxcodeigniterweb
Mr. Mike
Mr. Mike

Reputation: 453

How to send/return data/value from CI_Controller to AJAX

As the title, i want to CI_Controller return value/data back to AJAX which give request before.

The_Controller.php 

class The_Controller extends CI_Controller
{

    public function __construct()
    {
        parent::__construct();
    }

    function postSomething()
    {
        $isHungry = true;
        if(isHunry){
            return true;
        }else{
            return false;
        }
    }

}

AJAX

$(document).ready(function() {

        $('#form').on('submit', function (e)
        {
            e.preventDefault(); // prevent page reload
            $.ajax ({
                type : 'POST', // hide URL
                url : '/index.php/The_Controller/postSomething',
                data : $('#form').serialize (),
                success : function (data)
                {
                    if(data == true)
                    {
                        alert ('He is hungry');
                    }
                    else
                    {
                        alert ('He is not hungry');
                    }       
                }
                , error: function(xhr, status, error)
                {
                    alert(status+" "+error);
                }
            });
            e.preventDefault();
            return true;
        });
    });

The Problem :

The AJAX code above always get FALSE for variable data. It's not get return value from postSomething function inside CI_Controller.

The Question :

I want to if(data == true) result alert ('He is hungry');. But cause data not fill by return value of postSomething function inside CI_Controller so it always false. How to get return value/data from CI_Controller to AJAX?

Thank you

Upvotes: 1

Views: 311

Answers (2)

Thor Juhasz
Thor Juhasz

Reputation: 57

You have a typo in the PHP code

    if(isHunry){

should be

    if($isHungry){

Also, returning data to an AJAX request, you really should be sending the correct content type in the header. Ex.

header('Content-Type: application/json');

And print or echo the data, not return it, as well as json_encode it:

echo json_encode($data);

So your postSomething php function should look something like this:

$isHungry = true;
header('Content-Type: application/json');
echo json_encode($isHungry);

Upvotes: 1

Jobayer
Jobayer

Reputation: 1231

you need to change your code a little bit. no need to return data, just echo true or echo false from your controller. Hope you will get your desired result.

Upvotes: 1

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