feat(events): add a selector for easier event comparison

app/Resources/views/admin/event/compare_event.html.twig

@@ -0,0 +1,12 @@
+<div class="ui violet segment">
+    {{ form_start(form) }}
+        <div class="ui form">
+            <div class="inline fields">
+                <div class="field">
+                    {{ form_label(form.id, 'Comparer à') }}
+                    {{ form_widget(form.id, {attr: {onchange:'this.name="id"; this.form.submit(); return false;'}}) }}
+                </div>
+            </div>
+        </div>
+    {{ form_end(form) }}
+</div>

app/Resources/views/admin/event/stats.html.twig

@@ -5,7 +5,6 @@
     {% include 'admin/event/change_event.html.twig' with {form: event_select_form} only %}
 
     {% if event == null %}
-
         <div class="ui placeholder segment">
             <div class="ui icon header">
                 <i class="meh outline icon"></i>
@@ -15,6 +14,7 @@
     {% else %}
         <div class="ui segment">
             <h2 class="ui header">Évolution des inscriptions</h2>
+            {% include 'admin/event/compare_event.html.twig' with {form: event_compare_form} only %}
             <div class="ui clearing divider"></div>
             <div id="container"></div>
         </div>

app/config/services.yml

@@ -132,6 +132,10 @@ services:
         autowire: true
         autoconfigure: true
 
+    AppBundle\Event\Form\EventCompareSelectType:
+        autowire: true
+        autoconfigure: true
+
     AppBundle\Event\Form\SpeakerType:
         autowire: true
         autoconfigure: true

sources/AppBundle/Controller/Admin/Event/StatsAction.php

@@ -4,6 +4,7 @@
 
 use Afup\Site\Forum\Inscriptions;
 use AppBundle\Controller\Event\EventActionHelper;
+use AppBundle\Event\Form\EventCompareSelectType;
 use AppBundle\Event\Form\EventSelectType;
 use AppBundle\Event\Model\Repository\EventStatsRepository;
 use AppBundle\Event\Model\Repository\TicketRepository;
@@ -167,6 +168,7 @@ public function __invoke(Request $request)
                 'two' => $ticketsDayTwo,
             ],
             'event_select_form' => $this->formFactory->create(EventSelectType::class, $event)->createView(),
+            'event_compare_form' => $this->formFactory->create(EventCompareSelectType::class, $event)->createView(),
         ]));
     }
 }

sources/AppBundle/Event/Form/EventCompareSelectType.php

@@ -0,0 +1,46 @@
+<?php
+
+
+namespace AppBundle\Event\Form;
+
+use AppBundle\Event\Model\Event;
+use AppBundle\Event\Model\Repository\EventRepository;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class EventCompareSelectType extends AbstractType
+{
+    /** @var EventRepository */
+    private $eventRepository;
+
+    public function __construct(EventRepository $eventRepository)
+    {
+        $this->eventRepository = $eventRepository;
+    }
+
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+        $builder
+            ->add('id', ChoiceType::class,
+                [
+                    'choice_label' => 'title',
+                    'choice_value' => 'id',
+                    'data' => $options['data'] ?? null,
+                    'choices' => $this->eventRepository->getPreviousEvents(),
+                ]
+            )
+            ->setMethod(Request::METHOD_GET)
+        ;
+    }
+
+    public function configureOptions(OptionsResolver $resolver)
+    {
+        $resolver->setDefaults([
+            'data_class' => Event::class,
+            'csrf_protection' => false
+        ]);
+    }
+}

sources/AppBundle/Event/Model/Repository/EventRepository.php

@@ -162,18 +162,30 @@ public function getCurrentEvent()
     }
 
     /**
-     * @param int $eventCount
+     * @param int|null $eventCount
      *
      * @return \CCMBenchmark\Ting\Repository\CollectionInterface
      */
-    public function getPreviousEvents($eventCount)
+    public function getPreviousEvents($eventCount = null)
     {
-        $query = $this->getQuery('SELECT * FROM afup_forum WHERE date_debut < NOW() ORDER BY date_debut DESC LIMIT :limit');
+        $baseQuery = 'SELECT * FROM afup_forum WHERE date_debut < NOW() ORDER BY date_debut DESC';
+
+        if ($eventCount === null) {
+            return $this->getQuery($baseQuery)
+                    ->query(
+                        $this->getCollection(new HydratorSingleObject())
+                    );
+
+        }
+
+        $baseQuery .= ' LIMIT :limit';
+        $query = $this->getQuery($baseQuery);
         $query->setParams(['limit' => $eventCount]);
 
         return $query->query($this->getCollection(new HydratorSingleObject()));
     }
 
+
     /**
      * @param $path
      *