How to Call Model Function from Another Model in Codeigniter?

We may sometime require to call model method from another model in codeigniter app. i will show you how to call model function to another model, same model and controller file.

we always use model for database logic but i require to use for some classes like as helper. but i have more then one class as group wise and i require to call some class function to another class.

So finally i found the way to call model function to another model using "$this->load->model('Model Class Name')". I also want to give you small and quick example to call model function to another model or controller file.

In this example, i am going to create two model with Model_1 and Model_2, then i use Model_1 function to Model_2 model class. After that i created one BaseController file and class Model_2 method and print it. So let's see example:

Create Model_1 Model File:

first of all, we will create "Model_1" Model class and declare two method as fun1() and fun2(). So let's create.

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";
  }
  
}

Create Model_2 Model File:

next, we will create "Model_2" Model class and declare one method as fun1() and use Model_1 class function on it. So let's create.

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;
  }
  
}

Create Route:

now, we will create one dummy route for testing so we can test it on our browser. So let's add route like as bellow:

application/config/routes.php

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

Create BaseController:

at last, we will create one controller "BaseController" with index method. So let's add controller file code like as bellow:

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>";
  
  }
  
}

Now you can simply run this example and check output.

output will be like as bellow:

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

I hope it can help you....