CodeIgniter Access Controller from PHP Require

Question

I am using codeigniter for my project and I am stuck trying to figure this out.

I have some javascript that needs to perform an AJAX call to fetch some results based on a dropdown value that was selected.

function fetchLines(){
 $.ajax({
    url: baseURL + "resources/ajax.php?node=fetchLines",
    type: 'GET',
    cache: false,
    data: {
       lineType: 'business'
    },
    error: function(err) {
        alert(err.statusText);
    },
    success: function(data) {

        console.log(data);

    }

});
}

In this AJAX file, I am trying to include my controller and then access the function within it.

<?php
define('BASEPATH', "AJAX");
require_once('../application/controllers/Project.php');


switch($_REQUEST['node']){

    case 'fetchLines':
        $objLines = new Project();
        $objLines->fetchLines($_REQUEST['lineType']);
    break;

}

?>

My CI Controller then has a private function in it which I am trying to call to get the data I need:

private function fetchLines($lineType){
    $lines = $this->project_model->fetchLines($lineType);
    return $lines;
}

My goal here is to have an AJAX file or controller (if needed) be used for all my AJAX calls. It needs to be able to access a controller and return data.

With the current code above, I am getting the error: Class 'CI_Controller' not found in <b>C:\xampp\htdocs\blueprint\application\controllers \Project.php

Is there a better way to handle situations like this? I'm not an expert with OOP but some reading suggested something along these lines.

Hmm okay, thanks for the info. Is there a better way to approach this? I know I'm not the only one run into a situation like this. — SBB
– SBB, Commented Jul 31, 2015 at 1:29

Hassaan · Accepted Answer · 2015-07-31 05:50:18Z

1

why you are not sending this request to the controller method instead ?

        function fetchLines(){
         $.ajax({
            url: baseURL + "controller-name/method-name",
            type: 'GET',
            cache: false,
            data: {lineType: 'business'},
            error: function(err) {
                alert(err.statusText);
            },
            success: function(data) {

                console.log(data);

            }

        });
        }

NOTE and in controller you can access these values as

function method-name(){
    echo $this->input->get('lineType');
}

edited Jul 31, 2015 at 5:50

Hassaan

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answered Jul 31, 2015 at 5:43

Asim Shahzad

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Comments

reignsly · Accepted Answer · 2015-07-31 01:17:01Z

0

Lets say my ajax file is in the controllers folder And I want to re-use my controllers, i would do it like this :

$this->load->library('../controllers/your_controller'); 
$this->your_controller->_some_method($data);

Load the controller as library and used it like a library. Hope this helps.

answered Jul 31, 2015 at 1:17

reignsly

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Comments

Hannan · Accepted Answer · 2015-07-31 05:07:59Z

0

You should put the code that listens to AJAX call in a controller function only. The way you are trying to do is not a good practice at all. If you want a method to be executed only if the request was an XHR i.e.AJAX request then use

if($this->input->is_ajax_request()){ //your code }else{ redirect(base_url()) }

answered Jul 31, 2015 at 5:07

Hannan

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