Implement filtering functionality

src/Controller/OfferController.php

@@ -4,6 +4,8 @@ namespace App\Controller;
 
 use App\Entity\Offering;
 use App\Form\OfferingFormType;
+use App\Form\OfferFilterFormType;
+
 
 use App\Repository\OfferingRepository;
 use App\Repository\WishRepository;
@@ -32,10 +34,36 @@ class OfferController extends AbstractController
     }
 
     #[Route('/offers', name: 'offers')]
-    public function index(Environment $twig, OfferingRepository $offerRepository): Response
+    public function distanceExample(Environment $twig, Request $request, OfferingRepository $offerRepository, PlzToCoordinate $plzconverter, DistanceCalculator $distanceCalculator): Response
     {
+        $form = $this->createForm(OfferFilterFormType::class);
+        $form->handleRequest($request);
+
+        $allOffers = $offerRepository->findAll();
+        $filteredOffers = [];
+
+        if ($form->isSubmitted() && $form->isValid()) {
+            $filterDistance = $form->get('distance')->getData();
+            $filterPlz = $form->get('zipCode')->getData();
+            $filterCoordinate = $plzconverter->convertPlzToCoordinate($filterPlz);
+
+            foreach ($allOffers as $offer) {
+                $offerCoordinate = $offer->getCoordinate();
+                
+                $distance = $distanceCalculator->calculateDistance($offerCoordinate, $filterCoordinate);
+        
+                if ($distance < $filterDistance) {
+                    array_push($filteredOffers, $offer);
+                }
+            }
+        }
+        else {    
+            $filteredOffers = $allOffers;
+        }
+        
         return new Response($twig->render('offer/index.html.twig', [
-            'offers' => $offerRepository->findAll(),
+            'offers' => $filteredOffers,
+            'filter_form' => $form->createView()
         ]));
     }
 

src/Form/OfferFilterFormType.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Form;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
+use Symfony\Component\Form\Extension\Core\Type\NumberType;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class OfferFilterFormType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder
+            ->add('zipCode', TextType::class, [
+                'label' => 'ZIP',
+            ])
+            ->add('distance', NumberType::class, [
+                'label' => 'Distance',
+            ])
+        ;
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            // Configure your form options here
+        ]);
+    }
+}

templates/offer/index.html.twig

@@ -10,6 +10,22 @@
     </div>
     {% endfor %}
 
+    <h2><i class="fas fa-filter"></i>Filter</h2>
+    {{ form_start(filter_form) }}
+        <div class="row">
+            <div class="col-sm">
+                {{ form_row(filter_form.zipCode) }}
+            </div>
+            <div class="col-sm">
+                {{ form_row(filter_form.distance) }}
+            </div>
+            <div class="col-sm">
+                <button type="submit" class="btn btn-lg btn-primary">Filter</button>
+            </div>
+        </div>
+    {{ form_end(filter_form) }}
+
+
     <h1>Offers</h1>
     {% if offers|length > 0 %}
         <div class="card-deck d-flex justify-content-around justify-content-sm-around justify-content-md-between flex-wrap">