calling x controller function inside a y controller function codeigniter - php

Question

I'm new to codeigniter and I have two controllers: utility.phpand welcome.php.
In utility.php, I have functions:
function getdata() {
//code here
}
function logdata() {
//code here
}
Inside welcome.php, I have this function:
function showpage() {
//some code here
//call functions here
}
What I want to do is inside my welcome.php, I want to call the functions from utility.php. How do I do this? Thanks.

Answer 1

Refrence from here
To extend controller please either follow this tutorial or see some code below.
differences between private/public/protected
make a file in folder /application/core/ named MY_Controller.php
Within that file have some code like
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Controller extends CI_Controller {
protected $data = Array(); //protected variables goes here its declaration
function __construct() {
parent::__construct();
$this->output->enable_profiler(FALSE); // I keep this here so I dont have to manualy edit each controller to see profiler or not
$this->load->model('some_model'); //this can be also done in autoload...
//load helpers and everything here like form_helper etc
}
protected function protectedOne() {
}
public function publicOne() {
}
private function _privateOne() {
}
protected function render($view_file) {
$this->load->view('header_view');
if ($this->_is_admin()) $this->load->view('admin_menu_view');
$this->load->view($view_file . '_view', $this->data); //note all my view files are named <name>_view.php
$this->load->view('footer_view');
}
private function _isAdmin() {
return TRUE;
}
}
and now in any of yours existing controllers just edit 1st or 2nd line where
class <controller_name> extends MY_Controller {
and you are done
also note that all your variables that are meant to be used in view are in this variable (array) $this->data
example of some controller that is extended by MY_Controller
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class About extends MY_Controller {
public function __construct() {
parent::__construct();
}
public function index() {
$this->data['today'] = date('Y-m-d'); //in view it will be $today;
$this->render('page/about_us'); //calling common function declared in MY_Controller
}
}

Answer 2

You don't is the short answer.
The point of MVC is to have your code well organized.
What you can do though is create a library in the libraries folder where you put methods you need in more than one controller.
For example you can make a mylog library, where you can put all your log related stuff. In any controller you will then call:
$this->load->library('mylog');
$this->mylog->logdata();
Besides functions that deal with data models should reside in models. You can call any model from any controller in CI

Answer 3

That is out of concept, if you want to call code in different controllers do following:
create helper and call function whenever (even in view) you want.
extend CI_Controller so you can use one or more functions in any controller that is extended.
Lets start with helper:
create file in folder application/helpers/summation_helper.php
use following sample of code
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
function sum($a, $b) {
//$CI =& get_instance();
// if you want to use $this variable you need to get instance of it so now instead of using $this->load... you may use $CI->load
$return = $a + $b;
return number_format($return, 3);
}
If you are going to use your helper in many controllers/views please load it in autoload, otherwise just load it manualy $this->load->helper('summation');
Extending Controller_CI: this is way better approach if you are using database. Please follow this tutorial, which explains it all.
*I have crafted an answer just before site went down posting this from cellphone.