CODEWITHSUNDEEP
codeigniterlibrariesextend
Glueckstiger
Glueckstiger

Reputation: 172

How do I extend own library?

I am new in codeigniter and want to add a library to my first ci app which extends another library

class Mylib {}

/application/libraries/Mynewlib.php:

class Mynewlib extends Mylib{}

Where do I have to put Mylib.php and how do I load Mylib?

Thanks!

Upvotes: 2

Views: 7565

Answers (4)

Brian Keith
Brian Keith

Reputation: 328

This works for me.

library file Mylib.php

class Mylib {
   function test() 
   {
       return 1;
   }
}

library file Mynewlib

require_once('Mylib.php');   
class Mynewlib extends Mylib{}

controller

$this->load->library('Mynewlib');
echo $this->Mynewlib->test();

Upvotes: 2

thienhaxanh2405
thienhaxanh2405

Reputation: 167

I'm still looking for best pratice in this case.

In my case, I have 2 classes should extend from a parent. (Payment - parent class; Payment_paypal - interact with Paypal; Payment_nganluong - interact with Ngan Luong, my domestic gateway) With each payment gateway, I have to write some properties, method to process but almost base properties and method of theme are the same.

My solution: I created 4 file:

  1. Payment_base.php

    class Payment_base { // base properties and method }

  2. Payment.php

    require_once (APPPATH.'/libraries/Payment_base.php'); // this is an instance of payment_base, // when you want to use base method and properties // just call $payment->... // class Payment extends Payment_base { public function __construct(){ parent::__construct() } }

  3. Payment_paypal.php

    require_once (APPPATH.'/libraries/Payment_base.php'); class Payment_paypal extends Payment_base{} ////////////////////////////////////////// require_one 'Payment_base.php'; class Payment_paypal extends Payment_base { // properties and method }

4, Payment_nganluong.php

require_once (APPPATH.'/libraries/Payment_base.php');
class Payment_nganluong extends Payment_base { 
// properties and method
}

That's it, and in controller:

$this->load->library('payment');
$this->load->library('payment_paypal');
$this->load->library('payment_nganluong');
$this->payment->myMethod(); // base method
$this->payment_paypal->charge(); // call to paypal to charge money
$this->payment_nganluong->checkout(); // check out with Ngan Luong
// no need to load and use payment_base

Hope some helpful for you.

Upvotes: 5

user4419336
user4419336

Reputation:

You could use get instance in library to load another library in

<?php

class MyLib {

public function __construct() {
    $this->CI =& get_instance();
    $this->CI->load->library('mylib2');

}

public function something() {
   $this->CI->mylib2->some_function();
}

}

Upvotes: 0

Nassim
Nassim

Reputation: 2876

you create a file in application/libraries/mylib.php 

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

class MyLib
 {

    function __construct() 
    {
         // initialize variables if you want
    }

    public function  my_function($something)
    {
    $out = $something . " World";
    return $out;
    }

}

/* End of file mylib.php */

then in your controller you call your library like this 

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class my_controller extends CI_Controller 
{
    public function index()
    {
        $this->load->library('mylib'); // call the custom class MyLib
        $term = $this->mylib->my_function("Hello");
        echo $term; // Hello World
    }
}
/* End of file my_controller.php */
/* Location: ./application/controllers/my_controller.php */

Hope that helps

see http://www.codeigniter.com/userguide2/general/creating_libraries.html for more details

Upvotes: 0

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