CodeIgniter CRUD operations with MySQL, in this tutorial we will learn how CRUD works in CodeIgniter.
CRUD means to create, read, update, and delete. If you want to create a CRUD operation in Codeigniter, configure the first database, and connect the MySQL database after creating the CRUD operation in Codeigniter.
Step 1: Create Database & table
First, we need a database then create a table I am creating the tutorial database and register table you can execute the following code to create a database table in your PHPMyAdmin
CREATE TABLE IF NOT EXISTS `register` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`first_name` varchar(64) NOT NULL,
`last_name` varchar(64) NOT NULL,
`address` text NOT NULL,
`email` varchar(64) NOT NULL,
`mobile` varchar(12) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=15 ;Step 2: Connect to Database
Go to the config folder and open database.php and put your hostname, database username, database password, and database name.
application/config/ database.php
<?php
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost', // host name
'username' => 'root', //database username
'password' => '', // database password
'database' => 'tutorial', // db name
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
?>
Step 3: Create a Register Controller.
Create Register controller and add the following methods add, delete, and edit look at the example below.
application/controllers/Register.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Register extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->helper('url');
$this->load->model('register_model');
}
public function index() {
$arrData['register_detail'] = $this->register_model->get_all_register_detail();
$this->load->view('list', $arrData);
}
public function add() {
if ($this->input->post('btnadd')) {
$arrData['first_name'] = $this->input->post('txtFname');
$arrData['last_name'] = $this->input->post('txtLname');
$arrData['address'] = $this->input->post('txtAddress');
$arrData['email'] = $this->input->post('txtEmail');
$arrData['mobile'] = $this->input->post('txtMobile');
$insert = $this->register_model->insert($arrData);
if ($insert) {
redirect('register');
}
}
$this->load->view('add');
}
public function edit($id) {
$arrData['register_detail'] = $this->register_model->get_id_wise_register_detail($id);
if ($this->input->post('btnEdit')) {
$editData['first_name'] = $this->input->post('txtFname');
$editData['last_name'] = $this->input->post('txtLname');
$editData['address'] = $this->input->post('txtAddress');
$editData['email'] = $this->input->post('txtEmail');
$editData['mobile'] = $this->input->post('txtMobile');
$update = $this->register_model->update($editData, $id);
if ($update) {
redirect('register');
}
}
$this->load->view('edit', $arrData);
}
public function delete($id) {
$delete = $this->register_model->delete($id);
if ($delete) {
redirect('register');
}
}
}
Step 4: Create Register_model Model
Create Register_model Model and add the following methods get_all_register_detail,get_id_wise_register_detail,insert,update and delete
application/models/Register_model.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Register_model extends CI_Model {
public function __construct() {
$this->load->database('default');
$this->load->library('session');
// Call the Model constructor
parent::__construct();
}
public function get_all_register_detail() {
$this->db->select('*');
$this->db->from('register');
$objQuery = $this->db->get();
return $objQuery->result_array();
}
public function get_id_wise_register_detail($id) {
$this->db->select('*');
$this->db->from('register');
$this->db->where('id', $id);
$objQuery = $this->db->get();
return $objQuery->result_array();
}
public function insert($arrData) {
if ($this->db->insert('register', $arrData)) {
return true;
} else {
return false;
}
}
public function update($editData, $id) {
$this->db->where('id', $id);
if ($this->db->update('register', $editData)) {
return true;
} else {
return false;
}
}
function delete($id) {
if ($this->db->delete('register', array('id' => $id))) {
return true;
} else {
return false;
}
}
}
?>5. Create Views file
create views list, add and edit to send the data to the controller, and save database our record even you have edited registred users.
- list.php
- edit.php
- add.php
application/views/list.php
<html>
<head>
<title>codeigniter Tutorial</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-2"></div>
<div class="col-md-8">
<h2>List of Registered users</h2>
<table class="table">
<tr>
<td colspan="5" align="right"><a href="<?php echo base_url(); ?>register/add">Add</a></td>
</tr>
<tr>
<td>First Name</td>
<td>Last Name</td>
<td>Email</td>
<td>Mobile</td>
<td>Action</td>
</tr>
<?php
foreach ($register_detail as $rg) {
?>
<tr>
<td><?php echo $rg['first_name']; ?></td>
<td><?php echo $rg['last_name']; ?></td>
<td><?php echo $rg['email']; ?></td>
<td><?php echo $rg['mobile']; ?></td>
<td><a href="<?php echo base_url(); ?>register/edit/<?php echo $rg['id']; ?>">Edit</a> <a href="<?php echo base_url(); ?>register/delete/<?php echo $rg['id']; ?>">Delete</a></td>
</tr>
<?php
}
?>
</table>
</div>
<div class="col-md-2"></div>
</div>
</div>
</body>
</html> application/views/edit.php
<html>
<head>
<title>codeigniter Tutorial</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-6">
<form method="post" name="frmEdit">
<div>
<h3>Update User</h3>
</div>
<div class="form-group">
<td>First Name</td>
<label for="">First Name</label>
<input type="text" name="txtFname" value="<?php echo $register_detail[0]['first_name']; ?>" class="form-control">
</div>
<div class="form-group">
<td>Last Name</td>
<input type="text" name="txtLname" value="<?php echo $register_detail[0]['last_name']; ?>" class="form-control">
</div>
<div class="form-group">
<label for="">Last Name</label>
<textarea name="txtAddress" class="form-control"><?php echo $register_detail[0]['address']; ?></textarea>
</div>
<div class="form-group">
<label for="">Email</label>
<input type="text" name="txtEmail" value="<?php echo $register_detail[0]['email']; ?>" class="form-control">
</div>
<div class="form-group">
<label for="">Mobile</label>
<input type="text" name="txtMobile" value="<?php echo $register_detail[0]['mobile']; ?>" class="form-control">
</div>
<div class="form-group">
<input type="submit" value="Edit Now" name="btnEdit" class="btn btn-primary btn-lg">
</div>
</form>
<div class="col-md-3"></div>
</div>
</div>
</div>
</body>
</html> application/views/add.php
<html>
<head>
<title>codeigniter Tutorial</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-6">
<form method="post" name="frmAdd" action="">
<h3>Add User</h3>
<div class="form-group">
<label for="">First Name</label>
<input type="text" class="form-control" name="txtFname">
</div>
<div class="form-group">
<label for="">Last Name</label>
<input type="text" class="form-control" name="txtLname">
</div>
<div class="form-group">
<label for="">Address</label>
<input type="text" class="form-control" name="txtAddress">
</div>
<div class="form-group">
<label for="">Email</label>
<input type="text" class="form-control" name="txtEmail">
</div>
<div class="form-group">
<label for="">Mobile</label>
<input type="text" class="form-control" name="txtMobile">
</div>
<div class="form-group">
<input type="submit" value="Add user now" name="btnadd" class="btn btn-primary btn-lg">
</div>
</form>
<div class="col-md-3"></div>
</div>
</div>
</div>
</body>
</html> 
