Crud Controller

Crud.php

<?php

namespace App\Controllers;
use App\Models\CrudModel;

class Crud extends BaseController {
  
  //SELECT DATA
    function index() {
        // echo "Hello CI-4";
        $crudModel = new CrudModel();
        $data['user_data'] = $crudModel->orderBy('id', 'ASC')->paginate(10);
        $data['pagination_link'] = $crudModel->pager;
        return view('crud_view', $data);
    }
  //ADD DATA
    function add() {
        return view('add_data');
    }
  //PERFORM VALIDATION TO ADD DATA
    function add_validation() {
        helper(['form', 'url']);
        $error = $this->validate([
            'name' => 'required|min_length[3]',
            'email' => 'required|valid_email',
            'gender' => 'required'
        ]);

        if(!$error) {
            echo view('add_data', [
                'error' => $this->validator
            ]);
        } else {
            $crudModel = new CrudModel();

            $crudModel->save([
                'name'      => $this->request->getVar('name'),
                'email'     => $this->request->getVar('email'),
                'gender'    => $this->request->getVar('gender')
            ]);
            $session = \Config\Services::session();
            $session->setFlashdata('success', 'User Data Added');
            return $this->response->redirect(site_url('/crud'));
        }
    }
  //FETCH SINGLE DATA FOR UPDATION
    function fetch_single_data($id = null) {
        $crudModel = new CrudModel();
        $data['user_data'] = $crudModel->where('id', $id)->first();
        return view('edit_data', $data);
    }
  //PERFORM VALIDATION FOR UPDATION
    function edit_validation() {
        helper(['form', 'url']);
        $error = $this->validate([
            'name' => 'required|min_length[3]',
            'email' => 'required|valid_email',
            'gender' => 'required'
        ]);
        if(!$error) {
            echo view('edit_data', [
                'error' => $this->validator
            ]);
        } else {
            $crudModel = new CrudModel();
            $id = $this->request->getVar('id');
            $data = [
                'name'      => $this->request->getVar('name'),
                'email'     => $this->request->getVar('email'),
                'gender'    => $this->request->getVar('gender'),
            ];
            $crudModel->update($id, $data);
            $session = \Config\Services::session();
            $session->setFlashdata('success', 'User data updated');
            return $this->response->redirect(site_url("/crud"));
        }
    }
  //DELETE DATA
    function delete($id) {
        $crudModel = new CrudModel();
        $crudModel->where('id', $id)->delete($id);
        $session = \Config\Services::session();
        $session->setFlashdata('success', 'User data deleted');
        return $this->response->redirect(site_url("/crud"));
    }
}

?>