clqms-be/app/Controllers/Occupation.php

<?php
namespace App\Controllers;

use CodeIgniter\API\ResponseTrait;
use CodeIgniter\Controller;
use App\Models\OccupationModel;

class Occupation extends Controller {
    use ResponseTrait;

    protected $db;
    protected $modelOccupation;
    protected $rulesOccupation;

    public function __construct() {
        $this->db = \Config\Database::connect();
        $this->modelOccupation = new OccupationModel();
        $this->rulesOccupation = [ 'OccCode' => 'required','OccText' => 'required' ];
    }

    public function index() {
        $model = new OccupationModel();
        $rows = $model->get()->getResultArray();
        
        if (empty($rows)) {
            return $this->respond([ 'status'  => 'success', 'message' => "no Data."], 200);
        }

        return $this->respond([ 'status' => 'success', 'message'=> "fetch success", 'data'   => $rows ], 200);
    }

    public function show($OccupationID = null) {
        $model = new OccupationModel();
        $rows = $model->where('occupationID', (int) $OccupationID)->get()->getResultArray();
        
        if (empty($rows)) {
            return $this->respond([ 'status'  => 'success', 'message' => "no Data."], 200);
        }

        return $this->respond([ 'status' => 'success', 'message'=> "fetch success", 'data'   => $rows ], 200);
    }

    public function create() {
        $input = $this->request->getJSON(true);
        try {
            $this->db->transStart();
            $insert = $this->modelOccupation->insert($input);
            $this->db->transComplete();

            if ($this->db->transStatus() === false || !$insert) {
                return $this->fail();
            }
            
            return $this->respondCreated([ 'status'  => 'success', 'message' => 'data created successfully', 'data' => $input ], 201);
        } catch (\Throwable $e) {
            $this->db->transRollback();
            return $this->failServerError('Exception : ' . $e->getMessage());
        }
    }

    public function update() {
        $input = $this->request->getJSON(true);
        try {
            if (!$this->modelOccupation->find($input['OccupationID'])) {
                return $this->failNotFound('Data not found');
            }
            
            $this->db->transStart();
            $update = $this->modelOccupation->update($input['OccupationID'], $input);
            $this->db->transComplete();

            if ($this->db->transStatus() === false || !$insert) {
                return $this->fail();
            }

            return $this->respondCreated([ 'status'  => 'success', 'message' => 'Data updated successfully', 'data' => $input ], 201);
        } catch (\Throwable $e) {
            $this->db->transRollback();
            return $this->failServerError('Exception : ' . $e->getMessage());
        }
    }

}