Add Quiz feature: 10-question quizzes with progressive scoring (max 40 pts)

- Quizzes table with questions, answer options, attempts, answers - Question types: multiple_choice, exclusion, true_false, free_text - Progressive scoring: [1,1,2,2,3,3,4,6,8,10] = max 40 per quiz - Alpine.js countdown timer per question with auto-submit on timeout - Admin: CRUD for quizzes + per-question editor, JSON export/import - Child: quiz overview with best scores, question view, result breakdown - Nav: Quiz link in child header and admin sidebar
2026-05-05 21:14:09 +00:00
parent 213d4b4832
commit 6c6dd26823
21 changed files with 984 additions and 1 deletions
@@ -0,0 +1,104 @@
+<?php
+namespace App\Http\Controllers\Admin;
+use App\Http\Controllers\Controller;
+use App\Models\{Quiz, QuizQuestion, QuizAnswerOption, Subject};
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+
+class QuizController extends Controller {
+
+    public function index() {
+        $quizzes = Quiz::with('subject')->withCount('questions')->latest()->get();
+        return view('admin.quizzes.index', compact('quizzes'));
+    }
+
+    public function create() {
+        $subjects = Subject::all();
+        return view('admin.quizzes.create', compact('subjects'));
+    }
+
+    public function store(Request $r) {
+        $r->validate(['title'=>'required|string|max:120','subject_id'=>'required|exists:subjects,id','description'=>'nullable|string|max:500']);
+        $quiz = Quiz::create($r->only('title','subject_id','description') + ['active'=>true]);
+        return redirect()->route('admin.quizzes.edit', $quiz)->with('success','Quiz erstellt – jetzt Fragen hinzufügen.');
+    }
+
+    public function edit(Quiz $quiz) {
+        $subjects  = Subject::all();
+        $questions = $quiz->questions()->with('answerOptions')->get();
+        return view('admin.quizzes.edit', compact('quiz','subjects','questions'));
+    }
+
+    public function update(Request $r, Quiz $quiz) {
+        $r->validate(['title'=>'required|string|max:120','subject_id'=>'required|exists:subjects,id','description'=>'nullable|string|max:500']);
+        $quiz->update($r->only('title','subject_id','description') + ['active'=>$r->boolean('active')]);
+        return back()->with('success','Quiz gespeichert.');
+    }
+
+    public function destroy(Quiz $quiz) {
+        $quiz->delete();
+        return redirect()->route('admin.quizzes.index')->with('success','Quiz gelöscht.');
+    }
+
+    public function export(Quiz $quiz) {
+        $quiz->load('subject','questions.answerOptions');
+        $data = [
+            'subject'     => $quiz->subject->slug,
+            'title'       => $quiz->title,
+            'description' => $quiz->description,
+            'questions'   => $quiz->questions->map(fn($q) => [
+                'type'           => $q->type,
+                'question_text'  => $q->question_text,
+                'time_limit'     => $q->time_limit,
+                'correct_answer' => $q->correct_answer,
+                'options'        => $q->answerOptions->map(fn($o) => [
+                    'text'       => $o->text,
+                    'is_correct' => (bool)$o->is_correct,
+                ])->values(),
+            ])->values(),
+        ];
+        $filename = 'quiz-'.now()->format('Y-m-d').'-'.str($quiz->title)->slug().'.json';
+        return response()->streamDownload(
+            fn() => print(json_encode($data, JSON_PRETTY_PRINT|JSON_UNESCAPED_UNICODE)),
+            $filename, ['Content-Type'=>'application/json']
+        );
+    }
+
+    public function import(Request $r) {
+        $r->validate(['file'=>'required|file|mimes:json|max:4096']);
+        $raw = json_decode(file_get_contents($r->file('file')->getRealPath()), true);
+        if (!is_array($raw) || !isset($raw['title'],$raw['subject'],$raw['questions'])) {
+            return back()->with('error','Ungültiges JSON-Format. Felder: title, subject, questions erwartet.');
+        }
+        $subject = Subject::where('slug',$raw['subject'])->first();
+        if (!$subject) return back()->with('error','Unbekanntes Fach: '.$raw['subject']);
+
+        DB::transaction(function() use ($raw,$subject) {
+            $quiz = Quiz::create([
+                'subject_id'  => $subject->id,
+                'title'       => $raw['title'],
+                'description' => $raw['description'] ?? null,
+                'active'      => true,
+            ]);
+            foreach (array_slice($raw['questions'],0,10) as $i => $item) {
+                $q = QuizQuestion::create([
+                    'quiz_id'        => $quiz->id,
+                    'sort_order'     => $i,
+                    'type'           => $item['type'] ?? 'multiple_choice',
+                    'question_text'  => $item['question_text'],
+                    'time_limit'     => $item['time_limit'] ?? null,
+                    'correct_answer' => $item['correct_answer'] ?? null,
+                ]);
+                foreach (($item['options'] ?? []) as $j => $opt) {
+                    QuizAnswerOption::create([
+                        'quiz_question_id' => $q->id,
+                        'text'       => $opt['text'],
+                        'is_correct' => $opt['is_correct'] ?? false,
+                        'sort_order' => $j,
+                    ]);
+                }
+            }
+        });
+        return redirect()->route('admin.quizzes.index')->with('success','Quiz "'.$raw['title'].'" importiert.');
+    }
+}