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Model In Codeigniter

In this article, we will discuss models in codeigniter.

Purpose

In models, the business logic is written.

How To Create A Model?

In codeigniter, models are created in the "Models" folder. For this article, we have created a file "mymodel.php".

Inside the model, we have written following code

<?php
class mymodel extends CI_Model{
    public function DoEcho()
    {
        echo "My first model";
    }
}

In the above screenshot, the model class extends "CI_Model".

How To Call A Model In Controller Class?

To call a model class, following code is added in the controller class

<?php
defined('BASEPATH') or exit('No direct script access allowed');

class About extends CI_Controller{
    public function Index(){
        $this->load->model('mymodel');
        $this->mymodel->DoEcho();
        $this->load->view('About');
    }
}

Here is the output

Picture showing the output of text displayed when models method is called from the controller

Click to Enlarge

Model Alias

In the previous example, we have used the following code

$this->load->model('mymodel');

But we can also create an alias of model class. Here is the code

<?php
defined('BASEPATH') or exit('No direct script access allowed');

class About extends CI_Controller{
    public function Index(){
        $this->load->model('mymodel', 'mm');
        $this->mm->DoEcho();
        $this->load->view('About');
    }
}

Here "mm" is the alias of "mymodel".

Posted By -	Karan Gupta

Posted On -	Monday, July 13, 2020

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