Add quiz clearing and deletion functionality with UI enhancements

This commit introduces the ability to clear quiz results and delete quizzes directly from the backoffice. It includes new routes, controllers, modals for user confirmation, and updates to translations. The `QuizRepository` now supports dedicated methods for clearing results and deleting quizzes along with error handling. Related database migrations and front-end adjustments are also included.

src/Entity/Elimination.php

@@ -18,6 +18,7 @@ use Symfony\Component\Uid\Uuid;
 class Elimination
 {
     public const string SCREEN_GREEN = 'green';
+
     public const string SCREEN_RED = 'red';
 
     #[ORM\Id]
@@ -35,7 +36,7 @@ class Elimination
 
     public function __construct(
         #[ORM\ManyToOne(inversedBy: 'eliminations')]
-        #[ORM\JoinColumn(nullable: false)]
+        #[ORM\JoinColumn(nullable: false, onDelete: 'CASCADE')]
         private Quiz $quiz,
     ) {}
 
@@ -66,7 +67,7 @@ class Elimination
     /** @param InputBag<bool|float|int|string> $inputBag */
     public function updateFromInputBag(InputBag $inputBag): self
     {
-        foreach ($this->data as $name => $screenColour) {
+        foreach (array_keys($this->data) as $name) {
             $newColour = $inputBag->get('colour-'.mb_strtolower($name));
             if (\is_string($newColour)) {
                 $this->data[$name] = $inputBag->get('colour-'.mb_strtolower($name));

src/Entity/GivenAnswer.php

@@ -31,7 +31,7 @@ class GivenAnswer
         private Candidate $candidate,
 
         #[ORM\ManyToOne]
-        #[ORM\JoinColumn(nullable: false)]
+        #[ORM\JoinColumn(nullable: false, onDelete: 'CASCADE')]
         private Quiz $quiz,
 
         #[ORM\ManyToOne(inversedBy: 'givenAnswers')]

src/Entity/Season.php

@@ -43,6 +43,7 @@ class Season
     private Collection $owners;
 
     #[ORM\ManyToOne]
+    #[ORM\JoinColumn(nullable: true, onDelete: 'SET NULL')]
     private ?Quiz $ActiveQuiz = null;
 
     public function __construct()