ria/app/Controllers/Department.php

<?php

namespace App\Controllers;

use App\Controllers\BaseController;

use CodeIgniter\Validation\Exceptions\ValidationException;

use App\Models\Department_model;

use PhpOffice\PhpSpreadsheet\Spreadsheet;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

use PhpOffice\PhpSpreadsheet\Style\Alignment;


/**
 * Module : Department
 * Department Class to control all department related operations.
 * @author : Gandhimathi
 * @version : 1.1
 * @since : 12 Apr 2017
 * @example : Revised  at 15th april 2024
 */
class Department extends BaseController
{
    protected  $department_model;
    protected $session;
    
    /**
     * This is default constructor of the class
     */
    public function __construct()
    {
        parent::__construct();
        $this->department_model = new Department_model();
        $this->session = session();
        helper('form'); //$this->load->library('form_validation');
        // $this->load->library('pagination');	
        // $this->load->library('Excel');
        $this->isLoggedIn();
        
    }
    /**
     * This function used to load the first screen of the user
     */
    public function index()
    {

        //  if($this->isAdmin() == TRUE)
        // {
        //     $this->loadThis();
        // }
        // else
        // {
        $this->department_model = new department_model();

        //$searchText = $this->request->getPost('searchText');
        //$data['searchText'] = $searchText;    
        //$count = $this->department_model->departmentListing($searchText);
        //$returns = $this->paginationCompress ( "departmentListing/", $count, 20 );

        $data['userRecords'] = $this->department_model->departmentListing(); //$searchText, $returns["page"], $returns["segment"]);

        $this->global['pageTitle'] = 'Department Listing';

        $this->loadViews("departmentListing", $this->global, $data, NULL);
        //}
    }
    /**
     * This function is used to load the add new supplier    */
    function adddepartment()
    {

        //$data['payment'] = $this->department_model->getpayment();
        //$data['depcode'] = $this->department_model->getdepcode();
        $data['depcode'] = $this->department_model->getdepcode();

        $this->global['pageTitle'] = 'AddNew Department';

        $this->loadViews("adddepartment", $this->global, $data,  NULL);
    }



    function savedepartment()
    {

        $DepartmentName = $this->request->getPost('DepartmentName');
        $DEPCode = $this->request->getPost('DEPCode');
        $HeadDept = $this->request->getPost('HeadDept');
        $Createdby = $this->session->get('userId');
        $chked =  $this->request->getPost('IsActive');

        if ($chked != '') {
            $IsActive = '1';
        } else {
            $IsActive = '0';
        }

        $department = array('DepartmentName' => $DepartmentName, 'DEPCode' => $DEPCode, 'HeadDept' => $HeadDept, 'Createdby' => $Createdby, 'IsActive' => $IsActive);
        $result = $this->department_model->savedepartment($department);

        if ($result > 0) {
			$this->session->setFlashdata('success', 'Department Created successfully!');
		}else{
			$this->session->setFlashdata('error', 'Department Record Not Created!');	
		}
        return redirect()->route('departmentListing');        

    }

    /**
     * This function is used to edit the department information
     */
    function editdepartment()
    {

        $DepartmentName = $this->request->getPost('DepartmentName');
        $DEPCode = $this->request->getPost('DEPCode');
        $HeadDept = $this->request->getPost('HeadDept');
        $Createdby = $this->session->get('userId');
        $chked =  $this->request->getPost('IsActive');

        if ($chked != '') {
            $IsActive = '1';
        } else {
            $IsActive = '0';
        }


        $department = array('DepartmentName' => $DepartmentName, 'DEPCode' => $DEPCode, 'HeadDept' => $HeadDept, 'IsActive' => $IsActive);

        $result = $this->department_model->Updatedepartment($department, $DEPCode);

        if ($result == True) {
                $this->session->setFlashdata('success', 'Department Record Successfully Updated!');
            }else{
                $this->session->setFlashdata('error', 'Department Record Not Updated!');	
            }
            return redirect()->route('departmentListing');        
    }



    function viewdepartment($SID = '')
    {
        //print_r('hello');die();

        if ($SID == '') {
            $DepartmentID =  $_GET['SID'];
        } else {

            $DepartmentID  = $SID;
        }


        $data['department'] = $this->department_model->getDeptInfo($DepartmentID);
        $data['depcode'] = $this->department_model->getdepcode();
        $this->global['pageTitle'] = 'Edit Department';
        $this->loadViews("editdepartment", $this->global, $data, NULL);
    }

    function exportdepartment()
	{
		
        
        $exportData = $this->department_model->export_excel();
        $file_name = 'Department_Details' .' '.  '.xls'; //save our workbook as this file name
		$spreadsheet = new Spreadsheet();
		$sheet = $spreadsheet->getActiveSheet();
        $sheet->setTitle('Department Details');

        $headers = [
            'A1'=>'Department ID','B1'=>'Department Name','C1'=>'Head Deptment ID','D1'=>'Is Active','E1'=>'Created By','F1'=>'Created Date'
        ];
        
        foreach ($headers as $cell => $value) {
            $sheet->setCellValue($cell, $value);
            $sheet->getStyle($cell)->getFont()->setSize(12);
            $sheet->getStyle($cell)->getFont()->setBold(true);
        }

        if($exportData){
            $i = 6;
            foreach ($exportData as $data) {
                $rowData = [
                    'A' .  $i=>$data['DEPCode'],
                    'B' .  $i=>$data['DepartmentName'],
                    'C' .  $i=>$data['HeadDept'],
                    'D' .  $i=>$data['firstname'],
                    'E' .  $i=>$data['CreatedDt'],
                    'F' .  $i=>$data['IsActive']
                ];
                foreach ($rowData as $cell => $value) {
                    $sheet->setCellValue($cell, $value);
                }
                $i++;
            }

        }
		// $writer = new Xlsx($spreadsheet);
		// $writer->save($file_name);
		// header("Content-Type: application/vnd.ms-excel");
		// header('Content-Disposition: attachment; filename="' . basename($file_name) . '"');
		// header('Expires: 0');
		// header('Cache-Control: must-revalidate');
		// header('Pragma: public');
		// header('Content-Length:' . filesize($file_name));
		// flush();
		// readfile($file_name);
		// exit;
        // Clear the output buffer to prevent any other output
        ob_clean();

        $writer = new Xlsx($spreadsheet);
        

        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header('Content-Disposition: attachment;filename="'. $file_name .'"');
        header('Cache-Control: max-age=0');
        header('Expires: 0');
        header('Pragma: public');

        $writer->save('php://output');
        exit;
	}
}