CodeIgniter L2 helper & libraries & form validation

Codeigniter Framework

2.Helper & Libraries & Form Validation

Mhd Opada Al-Bosh & Mhd Tahsin Al-Shalabi

Agenda

• Form helper.

• Form validation.

• URI Class.

• Libraries.


Form helper

• form_open()

• form_input()

• form_password()

• form_textarea()

• form_dropdown()

• form_upload()

• form_hidden()


Form helper

• form_multiselect()

• form_checkbox()

• form_radio()

• form_submit()

• form_reset()

• form_close()

• set_value()


Form helper Vs HTML


<form action="<?php echo site_url('controller/method'); ?>" method="post">

vrs

<?php echo form_open('controller/method');

Form validation


class Form extends CI_Controller {

function index()

{

$this->load->helper(array('form', 'url'));

$this->load->library('form_validation');

if ($this->form_validation->run() == FALSE)

{

$this->load->view('myform');

}

else

{

$this->load->view('formsuccess');

}

}

}

Form validation


class Form extends CI_Controller {

function index()

{

$this->form_validation->set_rules('username', 'Username', 'required');

$this->form_validation->set_rules('password', 'Password', 'required');

if ($this->form_validation->run() == FALSE)

{

$this->load->view('myform');

}

else

{

$this->load->view('formsuccess');

}

}

}

Rule Reference

Form validation

Test Live


Let’s Try It

Live!

URI Class


• The URI Class provides functions that help

you retrieve information from your URI

strings

• Note: This class is initialized automatically

by the system so there is no need to do it

manually..

URI Class


• $this->uri->segment(n)

• example:http://example.com/index.php/news/local/metro/crime_is_up

• The segment numbers would be this:

1. news

2. local

3. metro

4. crime_is_up

http://example.com/index.php/news/local/metro/crime_is_up

URI Class


• $this->uri->uri_to_assoc(n)

• example:index.php/user/search/name/joe/location/UK/gender/male

• [array]

(

'name' => 'joe'

'location' => 'UK'

'gender' => 'male'

)

URI Class


• $this->uri->uri_string()Returns a string with the complete URI

• $this->uri->total_segments()Returns the total number of segments.

• $this->uri->segment_array()Returns an array containing the URI segments

Test Live


Let’s Try It

Live!

Libraries


• File names must be capitalized. For example: Myclass.php

• Class declarations must be capitalized. For

example: class Myclass

• Class names and file names must match.

•Class declarations must be capitalized. For example: class Myclass

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

class Someclass {

public function some_function()

{

}

}

/* End of file Someclass.php */

Libraries


• Loading the library & Calling some function.

•Class declarations must be capitalized. For example: class Myclass

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

class mycontroller{

public function my_function()

{

$this->load->library('someclass');

$this->someclass->some_function();

}

}

/* End of file Someclass.php */

Test Live


Let’s Try It

Live!

THANK YOU


Questions?

CodeIgniter L2 helper & libraries & form validation

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