How to call a model function from another model in Codeigniter?

In this tutorial, We will learn how to call a model method from another model in the Codeigniter app. I will teach you how to call a model function to another model, the same model, and the controller file.

Follow some steps:

Step 1:

Create Model_1 Model File application/models/Model_1.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
  
Class Model_1 extends CI_Model {
  
  public function fun1(){
    return "Model_1 fun1";
  }
  
  public function fun2(){
    return "Model_1 fun2";
  }
  
}

Step 1:

Create Model_2 Model File application/models/Model_2.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
  
Class Model_2 extends CI_Model {
  
  public function __construct() {
    parent::__construct();
  
    /* Load Models - Model_1 */
    $this->load->model('Model_1');
  }
  
  public function fun1(){
  
    /* Access Two model methods and assing response to Array */
    $response[] = $this->Model_1->fun1();
    $response[] = $this->Model_1->fun2();
  
    $response[] = "Model_2 fun1";
  
    return $response;
  }
  
}

Step 3:

Create Route application/config/routes.php

<?php

$route['base-call'] = "BaseController";

Step 4:

Create BaseController application/controller/BaseController.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');
  
class BaseController extends CI_Controller {
 
  public function __construct(){
    parent::__construct();
    $this->load->model('Model_2');
  }
  
  public function index(){
  
    $response1 = $this->Model_2->fun1();
    echo "<pre>";
    print_r($response1);
    echo "</pre>";
  
  }
  
}

Output:

Array (     [0] => Model_1 fun1     [1] => Model_1 fun2     [2] => Model_2 fun1 )

Thanks, I hope it will work for you.........