resq/src/Controller/RoleController.php

<?php

namespace App\Controller;

use App\Ramcar\BaseController;
use App\Entity\Role;

use Doctrine\ORM\Query;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

class RoleController extends BaseController
{
    public function index()
    {
        $params = $this->initParameters('role_list');

        $qb = $this->getDoctrine()
        	->getRepository(Role::class)
        	->createQueryBuilder('q')
        	->getQuery();

        // get all rows
        $rows = $qb->getResult(Query::HYDRATE_ARRAY);

        // response
        return $this->render('role/list.html.twig', $params);
    }

    public function rows(Request $req)
    {
    	// build query
    	$qb = $this->getDoctrine()
        	->getRepository(Role::class)
        	->createQueryBuilder('q');

        // count total records
        $total = $qb->select('COUNT(q)')
            ->getQuery()
            ->getSingleScalarResult();

        // get datatable params
        $datatable = $req->request->get('datatable');

        // get current page number
        $page = $datatable['pagination']['page'] ?? 1;

        $perpage = $datatable['pagination']['perpage'];
        $offset = ($page - 1) * $perpage;

        // add metadata
        $meta = [
            'page' => $page,
            'perpage' => $perpage,
            'pages' => ceil($total / $perpage),
            'total' => $total,
            'sort' => 'asc',
            'field' => 'id'
        ];

        // build query
        $query = $qb->select('q');

        // check if filter is present
        if (isset($datatable['query']['data-rows-search']) && !empty($datatable['query']['data-rows-search'])) {
            $query->where('q.id LIKE :filter')
                ->orWhere('q.name LIKE :filter')
                ->setParameter('filter', '%' . $datatable['query']['data-rows-search'] . '%');
        }

        // check if sorting is present, otherwise use default
        if (isset($datatable['sort']['field']) && !empty($datatable['sort']['field'])) {
            $order = $datatable['sort']['sort'] ?? 'asc';
            $query->orderBy('q.' . $datatable['sort']['field'], $order);
        } else {
            $query->orderBy('q.id', 'asc');
        }

        // get rows for this page
        $rows = $query->setFirstResult($offset)
            ->setMaxResults($perpage)
            ->getQuery()
            ->getResult(Query::HYDRATE_ARRAY);

        // response
        return $this->json([
            'meta' => $meta,
            'data' => $rows
        ]);

        // add crud urls
        foreach ($rows as $index => $row) {
            $rows[$index]['update_url'] = $this->generateUrl('role_update', ['id' => $row['id']]);
            $rows[$index]['delete_url'] = $this->generateUrl('role_delete', ['id' => $row['id']]);
        }

        // response
        return $this->json([
            'meta' => $meta,
            'data' => $rows
        ]);
    }

    public function create()
    {
        $params = $this->initParameters('role_list');

        // response
        return $this->render('role/form.html.twig', $params);
    }

    public function createSubmit(Request $req)
    {
        // TODO: validation

        // create new row
        $em = $this->getDoctrine()->getManager();
        $row = new Role();

        // set and save values
        $row->setID($req->request->get('id'))
            ->setName($req->request->get('name'));

        $em->persist($row);
        $em->flush();

        // set success
        $this->addFlash(
            'success',
            'Changes have been saved!'
        );

        // response
        return $this->redirectToRoute('role_list');
    }

    public function update($id)
    {
        $params = $this->initParameters('role_list');

        // get row data
        $em = $this->getDoctrine()->getManager();
        $row = $em->getRepository(Role::class)->find($id);

        if (empty($row))
            throw $this->createNotFoundException('The item does not exist');

        $params['row'] = $row;
        $params['values'] = [];

        // response
        return $this->render('role/form.html.twig', $params);
    }

    public function updateSubmit(Request $req, $id)
    {
        // TODO: validation
        
        // get row data
        $em = $this->getDoctrine()->getManager();
        $row = $em->getRepository(Role::class)->find($id);

        if (empty($row))
            throw $this->createNotFoundException('The item does not exist');

        // set and save values
        $row->setID($req->request->get('id'))
            ->setName($req->request->get('name'));

        $em->flush();

        // set success
        $this->addFlash(
            'success',
            'Changes have been saved!'
        );

        // response
        return $this->redirectToRoute('role_list');
    }

    public function destroy($id)
    {
    	$params = $this->initParameters('role_list');

        // get row data
        $em = $this->getDoctrine()->getManager();
        $row = $em->getRepository(Role::class)->find($id);

        if (empty($row))
            throw $this->createNotFoundException('The item does not exist');

        // delete this row
        $em->remove($row);
        $em->flush();

        // response
        $response = new Response();
        $response->setStatusCode(Response::HTTP_OK);
        $response->send();
    }
}