CodeIgniter CRUD Operations with MySQL
In this tutorial, you can learn CRUD operations in Codeigniter and MySQL. CRUD stands for create, read, update and delete. Create means inserting data into database using INSERT SQL statement. Read means reading data from database using SELECT SQL statement. Update means updating records using UPDATE SQL query. Finally, Delete means deleting data from database using DELETE SQL statements.We have covered this tutorial with live demo to create CRUD operations with Codeigniter and MySQL.
Step 1: Create MySQL Database and Table
Step 2: Create a model file
Create a model file named "Curd_model.php" inside "application/models" folder.
Step 3: Create a controller file
Next create a controller file named "Curd.php" inside "application/controllers" folder.
Step 4: Change Route file
So open "application/config/routes.php" file and add code like as bellow:
Step 5: Create a view
Create a view file named "add.php" inside "application/views/emp" folder
$this->load->view('templates/footer');
?>
Step 6: Create a view
Create a view file named "index.php" inside "application/views/emp" folder
Step 7: Create a view
Create a view file named "edit.php" inside "application/views/emp" folder
$this->load->view('templates/footer');
?>
Step 8: Create a view
Create a view file named "display.php" inside "application/views/emp" folder
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Step 1: Create MySQL Database and Table
//Table structure for table `employees`
CREATE TABLE `employees` (
`id` int(11) NOT NULL COMMENT 'primary key',
`name` varchar(255) NOT NULL COMMENT 'Employee Name',
`last_name` varchar(100) DEFAULT NULL,
`email` varchar(255) NOT NULL COMMENT 'Email Address',
`contact_no` varchar(16) DEFAULT NULL,
`address` text,
`salary` float(10,2) NOT NULL COMMENT 'employee salary'
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='datatable demo table';
// Dumping data for table `employees`
INSERT INTO `employees` (`id`, `name`, `last_name`, `email`, `contact_no`, `address`, `salary`) VALUES
(1, 'Nixon', 'Tiger', 'tiger@techarise.com', '9000000001', 'Washington', 3208000.00),
(2, 'Garrett', 'Winters', 'winters@techarise.com', '9000000002', 'New York', 170750.00),
(3, 'Ashton Cox', 'Ashton', 'cox@techarise.com', '9000000003', 'New Jersey', 86000.00),
(4, 'Cedric', 'Kelly', 'kelly@techarise.com', '9000000004', 'Sydney', 433060.00),
(5, 'Airi', 'Satouy', 'airi@techarise.com', '9000000005', 'Canberra', 162700.00),
(6, 'Brielle', 'Williamson', 'will@techarise.com', '9000000006', 'Wallington', 372000.00),
(7, 'Herrod', 'Chandler', 'herrod@techarise.com', '9000000007', 'Germany', 137500.00),
(8, 'Rhona', 'Davidson', 'rd@techarise.com', '9000000008', 'Itly', 327900.00),
(9, 'Colleen', 'Hurst', 'colleen@techarise.com', '9000000009', 'Moscow City', 205500.00),
(10, 'Sonya', 'Frost', 'frost@techarise.com', '9000000010', 'Paris', 103600.00),
(11, 'John', 'Philip', 'filip@techarise.com', '9000000011', 'Landon', 26584.00),
(12, 'Jaeeme', 'Khan', 'khan@techarise.com', '9000000012', 'New Delhi', 26584.00);
// Indexes for table `employees`
ALTER TABLE `employees` ADD PRIMARY KEY (`id`);
// AUTO_INCREMENT for table `employees`
ALTER TABLE `employees` MODIFY `id` int(11) NOT NULL AUTO_INCREMENT COMMENT 'primary key', AUTO_INCREMENT=13;
?>
Step 2: Create a model file
Create a model file named "Curd_model.php" inside "application/models" folder.
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
* Description of Curd Model: CodeIgniter CRUD Operations with MySQL
*
* @author TechArise Team
*
* @email info@techarise.com
*/
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Curd_model extends CI_Model {
private $_empID;
private $_firstName;
private $_lastName;
private $_email;
private $_address;
private $_salary;
private $_contactNo;
public function setEmpID($empID) {
$this->_empID = $empID;
}
public function setFirstName($firstName) {
$this->_firstName = $firstName;
}
public function setLastName($lastName) {
$this->_lastName = $lastName;
}
public function setEmail($email) {
$this->_email = $email;
}
public function setAddress($address) {
$this->_address = $address;
}
public function setSalary($salary) {
$this->_salary = $salary;
}
public function setContactNo($contactNo) {
$this->_contactNo = $contactNo;
}
// get Employee List
public function getEmpList() {
$this->db->select(array('e.id', 'e.name', 'e.last_name', 'e.email', 'e.address', 'e.contact_no', 'e.salary'));
$this->db->from('employees e');
$query = $this->db->get();
return $query->result_array();
}
// create new Employee
public function createEmp() {
$data = array(
'name' => $this->_firstName,
'last_name' => $this->_lastName,
'email' => $this->_email,
'address' => $this->_address,
'contact_no' => $this->_contactNo,
'salary' => $this->_salary,
);
$this->db->insert('employees', $data);
return $this->db->insert_id();
}
// update Employee
public function updateEmp() {
$data = array(
'name' => $this->_firstName,
'last_name' => $this->_lastName,
'email' => $this->_email,
'address' => $this->_address,
'contact_no' => $this->_contactNo,
'salary' => $this->_salary,
);
$this->db->where('id', $this->_empID);
$this->db->update('employees', $data);
}
// for display Employee
public function getEmp() {
$this->db->select(array('e.id', 'e.name as first_name', 'e.last_name', 'e.email', 'e.address', 'e.contact_no', 'e.salary'));
$this->db->from('employees e');
$this->db->where('e.id', $this->_empID);
$query = $this->db->get();
return $query->row_array();
}
// delete Employee
public function deleteEmp() {
$this->db->where('id', $this->_empID);
$this->db->delete('employees');
}
}
?>
Step 3: Create a controller file
Next create a controller file named "Curd.php" inside "application/controllers" folder.
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
* @package Curd : CodeIgniter CRUD Operations with MySQL
*
* @author TechArise Team
*
* @email info@techarise.com
*
* Description of Curd Controller
*/
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Curd extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->model('Curd_model', 'emp');
}
// Employee list method
public function index() {
$data['page'] = 'emp-list';
$data['title'] = 'Employee List | TechArise';
$data['empInfo'] = $this->emp->getEmpList();
$this->load->view('emp/index', $data);
}
// Employee Add method
public function add() {
$data['page'] = 'emp-add';
$data['title'] = 'Employee Add | TechArise';
$this->load->view('emp/add', $data);
}
// Employee save method
public function save() {
$this->load->library('form_validation');
// field name, error message, validation rules
$this->form_validation->set_rules('first_name', 'First Name', 'trim|required');
$this->form_validation->set_rules('last_name', 'Last Name', 'trim|required');
$this->form_validation->set_rules('email', 'Your Email', 'trim|required|valid_email');
$this->form_validation->set_rules('address', 'Address', 'trim|required');
$this->form_validation->set_rules('contact_no', 'Phone', 'trim|required');
$this->form_validation->set_rules('salary', 'Salary', 'trim|required');
if($this->form_validation->run() == FALSE) {
$this->add();
} else {
$first_name = $this->input->post('first_name');
$last_name = $this->input->post('last_name');
$email = $this->input->post('email');
$address = $this->input->post('address');
$contact_no = $this->input->post('contact_no');
$salary = $this->input->post('salary');
$this->emp->setFirstName($first_name);
$this->emp->setLastName($last_name);
$this->emp->setEmail($email);
$this->emp->setAddress($address);
$this->emp->setSalary($salary);
$this->emp->setContactNo($contact_no);
$this->emp->createEmp();
redirect('/');
}
}
// Employee edit method
public function edit($id='') {
$data['page'] = 'emp-edit';
$data['title'] = 'Employee Edit | TechArise';
$this->emp->setEmpID($id);
$data['empInfo'] = $this->emp->getEmp();
$this->load->view('emp/edit', $data);
}
// Employee update method
public function update() {
$this->load->library('form_validation');
// field name, error message, validation rules
$this->form_validation->set_rules('first_name', 'First Name', 'trim|required');
$this->form_validation->set_rules('last_name', 'Last Name', 'trim|required');
$this->form_validation->set_rules('email', 'Your Email', 'trim|required|valid_email');
$this->form_validation->set_rules('address', 'Address', 'trim|required');
$this->form_validation->set_rules('contact_no', 'Phone', 'trim|required');
$this->form_validation->set_rules('salary', 'Salary', 'trim|required');
if($this->form_validation->run() == FALSE) {
$this->edit();
} else {
$emp_id = $this->input->post('emp_id');
$first_name = $this->input->post('first_name');
$last_name = $this->input->post('last_name');
$email = $this->input->post('email');
$address = $this->input->post('address');
$contact_no = $this->input->post('contact_no');
$salary = $this->input->post('salary');
$this->emp->setEmpID($emp_id);
$this->emp->setFirstName($first_name);
$this->emp->setLastName($last_name);
$this->emp->setEmail($email);
$this->emp->setAddress($address);
$this->emp->setSalary($salary);
$this->emp->setContactNo($contact_no);
$this->emp->updateEmp();
redirect('/');
}
}
// Employee display method
public function display($id='') {
$data['page'] = 'emp-display';
$data['title'] = 'Employee Display | TechArise';
$this->emp->setEmpID($id);
$data['empInfo'] = $this->emp->getEmp();
$this->load->view('emp/display', $data);
}
// Employee display method
public function delete($id='') {
$this->emp->setEmpID($id);
$this->emp->deleteEmp();
redirect('/');
}
}
?>
Step 4: Change Route file
So open "application/config/routes.php" file and add code like as bellow:
// create routes
$route['add'] = 'curd/add';
$route['edit/(:any)'] = 'curd/edit/$1';
$route['display/(:any)'] = 'curd/display/$1';
$route['delete/(:any)'] = 'curd/delete/$1';
?>
Step 5: Create a view
Create a view file named "add.php" inside "application/views/emp" folder
$this->load->view('templates/header');
?>
CodeIgniter CRUD Operations with MySQL Example
$this->load->view('templates/footer');
?>
Step 6: Create a view
Create a view file named "index.php" inside "application/views/emp" folder
$this->load->view('templates/header');
?>
CodeIgniter CRUD Operations with MySQL Example
$this->load->view('templates/footer');
?>
Step 7: Create a view
Create a view file named "edit.php" inside "application/views/emp" folder
$this->load->view('templates/header');
$id = $empInfo['id'] ? $empInfo['id'] : '';
$first_name = $empInfo['first_name'] ? $empInfo['first_name'] : '';
$last_name = $empInfo['last_name'] ? $empInfo['last_name'] : '';
$email = $empInfo['email'] ? $empInfo['email'] : '';
$address = $empInfo['address'] ? $empInfo['address'] : '';
$contact_no = $empInfo['contact_no'] ? $empInfo['contact_no'] : '';
$salary = $empInfo['salary'] ? $empInfo['salary'] : '';
?>
CodeIgniter CRUD Operations with MySQL Example
$this->load->view('templates/footer');
?>
Step 8: Create a view
Create a view file named "display.php" inside "application/views/emp" folder
$this->load->view('templates/header');
$first_name = $empInfo['first_name'] ? $empInfo['first_name'] : '';
$last_name = $empInfo['last_name'] ? $empInfo['last_name'] : '';
$email = $empInfo['email'] ? $empInfo['email'] : '';
$address = $empInfo['address'] ? $empInfo['address'] : '';
$contact_no = $empInfo['contact_no'] ? $empInfo['contact_no'] : '';
$salary = $empInfo['salary'] ? $empInfo['salary'] : '';
?>
CodeIgniter CRUD Operations with MySQL Example
First Name:
Last Name:
Email:
Address:
Phone:
Salary:
$this->load->view('templates/footer');
?>
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