Hey Readers!!
We all fill out forms for various purposes.
But have you ever thought about how complex the code behind this is?
For this, we have CodeIgniter. It helps the developer to have a minimized code.
Let's begin to learn more about this.
It is a PHP MVC framework used to create web apps quickly. It provides various libraries which help in reducing the complex code.
Recommended Topic, Interpolation in Angular
It is one of the libraries provided by CodeIgniter. Let's take a simple example. We come across various forms to fill in the information; to build that form, very complex code is written. But with the help of Form Validation, we can minimize the code.
Now let's begin the implementation of form validation.
Before starting the implementation, we require three things:
Create a form called myInfo.php with the help of a text editor and save it to apps/Views/Folders.
<html>
<head>
<title>My Info </title>
</head>
<body>
<?php echo validation_errors(); ?>
<?php echo form_open('form'); ?>
<h5>Username</h5>
<input type="text" name="username" value="" size="60" />
<h5>Password</h5>
<input type="text" name="password" value="" size="60" />
<h5>Password Confirm</h5>
<input type="text" name="passconfirm" value="" size="60" />
<h5>Email Address</h5>
<input type="text" name="email" value="" size="60" />
<div><input type="submit" value="Submit" /></div>
</form>
</body>
</html>Create a form called successform.php with the help of a text editor and save it to apps/Views/Folders.
<html>
<head>
<title>My Info</title>
</head>
<body>
<h3>Yay!! Your form was successfully submitted!</h3>
<p><?php echo anchor('form', 'Please Try it again!'); ?></p>
</body>
</html>Create a Controller called Controllerform.php with the help of a text editor and save it to apps/Controller/Folder.
<?php
class Form extends CI_Controller {
public function index()
{
$this->load->helper(array('form', 'url'));
$this->load->library('form_validation');
if ($this->form_validation->run() == FALSE)
{
$this->load->view('myInfo');
}
else
{
$this->load->view('successform');
}
}
}To try the form, visit your site. The form should reload after you submit it because you haven't yet established any validation rules.
So, let's set the validation rules.
In Codeigniter, you can set any number of Validation rules, and to set the validation rules use the set_rules() method.
$this->form_validation->set_rules();The set_rules() method takes three parameters, which are given below:
Example:
Add this to your Controller
$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('password', 'Password', 'required');
$this->form_validation->set_rules('passconfirm', 'Password Confirmation', 'required');
$this->form_validation->set_rules('email', 'Email', 'required');Now your Controller will look like this:
<?php
class Form extends CI_Controller {
public function index()
{
$this->load->helper(array('form', 'url'));
$this->load->library('form_validation');
$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('password', 'Password', 'required',
array('required' => 'You must provide a %s.')
);
$this->form_validation->set_rules('passconfirm', 'Password Confirmation', 'required');
$this->form_validation->set_rules('email', 'Email', 'required');
if ($this->form_validation->run() == FALSE)
{
$this->load->view('myInfo');
}
else
{
$this->load->view('successform');
}
}
}
Must Read: Laravel Facades
It builds an opening form tag with a base URL based on your configuration preferences.
CodeIgniter is the front-end development.
Yes, CodeIgniter is Object Oriented Programming.
The Validate Payload Node allows a workflow to validate all or a portion of the current payload against a JSON schema and branch based on the results.
The three types of data validations are: Code Check, Range Check, and Format Check.
This blog has extensively discussed CodeIgniter form validation. This article helped enhance your knowledge about the form Validation Tutorial and setting the Validation rules for the form.
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