Codeigniter Form Validation with Error Message
In this post we will give you information about Codeigniter Form Validation with Error Message. Hear we will give you detail about Codeigniter Form Validation with Error MessageAnd how to use it also give you demo for it if it is necessary.
Form Validation is a primary requirement of every project, so i will give you simple example of form validation in codeigniter 3 application. we will use form_validation library for add form validation with error message display in codeigniter.
we can use default following validation rules of codeigniter 3:
1) required
2) regex_match
3) matches
4) differs
5) is_unique
6) min_length
7) max_length
8) exact_length
9) greater_than
10) greater_than_equal_to
11) less_than
12) less_than_equal_to
13) in_list
14) alpha
15) alpha_numeric
16) You can see more from here Codeigniter 3 Validation Rules.
So here i gave you full example of form validation in codeigniter application. i created simple form with first name, last name, email and address like contact us form and i set server side validation. So let’s simple see bellow step and make it form validation quick.
Step 1: Create Routes
In first step we require to add two route for display form and post form. so open routes.php file and add code like as bellow:
application/config/routes.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
$route['default_controller'] = 'welcome';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;
$route['item'] = "item/index";
$route['itemForm'] = "item/itemForm";
Step 2: Create Item Controller
In this step, we need to create Item Controller and define two methods, index() and itemForm(), Here we will also load form_validation and session library. So let’s proceed.
application/controllers/Item.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Item extends CI_Controller {
/**
* Get All Data from this method.
*
* @return Response
*/
public function __construct() {
parent::__construct();
$this->load->library('form_validation');
$this->load->library('session');
}
/**
* Create from display on this method.
*
* @return Response
*/
public function index()
{
$this->load->view('item');
}
/**
* Store Data from this method.
*
* @return Response
*/
public function itemForm()
{
$this->form_validation->set_rules('first_name', 'First Name', 'required');
$this->form_validation->set_rules('last_name', 'Last Name', 'required');
$this->form_validation->set_rules('email', 'Email', 'required|valid_email');
$this->form_validation->set_rules('address', 'Address', 'required');
if ($this->form_validation->run() == FALSE){
$this->load->view('item');
}else{
echo json_encode(['success'=>'Record added successfully.']);
}
}
}
Step 3: Create View File
In last step, we need to create view file, So here create item.php view file and copy bellow code, here we will display form.
application/views/item.php
<!DOCTYPE html>
<html>
<head>
<title>Codeigniter Ajax Validation Example</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.js"></script>
</head>
<body>
<div >
<h2>Codeigniter Form Validation with Error Message - ItSolutionStuff.com</h2>
<div style="display:none">
</div>
<?php echo validation_errors(); ?>
<form method="POST" action="/itemForm">
<div >
<label>First Name:</label>
<input type="text" name="first_name" placeholder="First Name">
</div>
<div >
<label>Last Name:</label>
<input type="text" name="last_name" placeholder="Last Name">
</div>
<div >
<strong>Email:</strong>
<input type="text" name="email" placeholder="Email">
</div>
<div >
<strong>Address:</strong>
<textarea name="address" placeholder="Address"></textarea>
</div>
<div >
<button >Submit</button>
</div>
</form>
</div>
</body>
</html>
Now we are ready to this full example.
So let’s run bellow command on your root directory for quick run:
php -S localhost:8000
Now you can open bellow URL on your browser:
http://localhost:8000/item/index
I hope it can help you…
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