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
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<?php
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namespace App\Http\Controllers\Admin;
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use App\Http\Controllers\Controller;
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use App\Models\{Quiz, QuizQuestion, QuizAnswerOption, Subject};
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use Illuminate\Http\Request;
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use Illuminate\Support\Facades\DB;
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class QuizController extends Controller {
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public function index() {
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$quizzes = Quiz::with('subject')->withCount('questions')->latest()->get();
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return view('admin.quizzes.index', compact('quizzes'));
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}
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public function create() {
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$subjects = Subject::all();
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return view('admin.quizzes.create', compact('subjects'));
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}
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public function store(Request $r) {
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$r->validate(['title'=>'required|string|max:120','subject_id'=>'required|exists:subjects,id','description'=>'nullable|string|max:500']);
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$quiz = Quiz::create($r->only('title','subject_id','description') + ['active'=>true]);
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return redirect()->route('admin.quizzes.edit', $quiz)->with('success','Quiz erstellt – jetzt Fragen hinzufügen.');
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}
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public function edit(Quiz $quiz) {
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$subjects = Subject::all();
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$questions = $quiz->questions()->with('answerOptions')->get();
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return view('admin.quizzes.edit', compact('quiz','subjects','questions'));
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}
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public function update(Request $r, Quiz $quiz) {
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$r->validate(['title'=>'required|string|max:120','subject_id'=>'required|exists:subjects,id','description'=>'nullable|string|max:500']);
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$quiz->update($r->only('title','subject_id','description') + ['active'=>$r->boolean('active')]);
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return back()->with('success','Quiz gespeichert.');
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}
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public function destroy(Quiz $quiz) {
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$quiz->delete();
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return redirect()->route('admin.quizzes.index')->with('success','Quiz gelöscht.');
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}
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public function export(Quiz $quiz) {
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$quiz->load('subject','questions.answerOptions');
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$data = [
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'subject' => $quiz->subject->slug,
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'title' => $quiz->title,
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'description' => $quiz->description,
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'questions' => $quiz->questions->map(fn($q) => [
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'type' => $q->type,
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'question_text' => $q->question_text,
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'time_limit' => $q->time_limit,
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'correct_answer' => $q->correct_answer,
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'options' => $q->answerOptions->map(fn($o) => [
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'text' => $o->text,
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'is_correct' => (bool)$o->is_correct,
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])->values(),
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])->values(),
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];
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$filename = 'quiz-'.now()->format('Y-m-d').'-'.str($quiz->title)->slug().'.json';
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return response()->streamDownload(
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fn() => print(json_encode($data, JSON_PRETTY_PRINT|JSON_UNESCAPED_UNICODE)),
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$filename, ['Content-Type'=>'application/json']
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);
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}
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public function import(Request $r) {
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$r->validate(['file'=>'required|file|mimes:json|max:4096']);
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$raw = json_decode(file_get_contents($r->file('file')->getRealPath()), true);
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if (!is_array($raw) || !isset($raw['title'],$raw['subject'],$raw['questions'])) {
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return back()->with('error','Ungültiges JSON-Format. Felder: title, subject, questions erwartet.');
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}
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$subject = Subject::where('slug',$raw['subject'])->first();
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if (!$subject) return back()->with('error','Unbekanntes Fach: '.$raw['subject']);
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DB::transaction(function() use ($raw,$subject) {
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$quiz = Quiz::create([
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'subject_id' => $subject->id,
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'title' => $raw['title'],
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'description' => $raw['description'] ?? null,
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'active' => true,
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]);
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foreach (array_slice($raw['questions'],0,10) as $i => $item) {
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$q = QuizQuestion::create([
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'quiz_id' => $quiz->id,
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'sort_order' => $i,
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'type' => $item['type'] ?? 'multiple_choice',
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'question_text' => $item['question_text'],
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'time_limit' => $item['time_limit'] ?? null,
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'correct_answer' => $item['correct_answer'] ?? null,
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]);
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foreach (($item['options'] ?? []) as $j => $opt) {
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QuizAnswerOption::create([
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'quiz_question_id' => $q->id,
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'text' => $opt['text'],
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'is_correct' => $opt['is_correct'] ?? false,
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'sort_order' => $j,
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]);
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}
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}
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});
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return redirect()->route('admin.quizzes.index')->with('success','Quiz "'.$raw['title'].'" importiert.');
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}
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}
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<?php
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namespace App\Http\Controllers\Admin;
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use App\Http\Controllers\Controller;
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use App\Models\{Quiz, QuizQuestion, QuizAnswerOption};
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use Illuminate\Http\Request;
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class QuizQuestionController extends Controller {
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public function create(Quiz $quiz) {
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return view('admin.quiz_questions.create', compact('quiz'));
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}
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public function store(Request $r, Quiz $quiz) {
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$r->validate([
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'type' => 'required|in:multiple_choice,exclusion,true_false,free_text',
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'question_text' => 'required|string',
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'time_limit' => 'nullable|integer|min:5|max:120',
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'correct_answer' => 'nullable|string|max:200',
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'correct_option' => 'nullable|integer|min:0|max:3',
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'options' => 'array',
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'options.*.text' => 'nullable|string|max:200',
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]);
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$q = QuizQuestion::create([
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'quiz_id' => $quiz->id,
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'sort_order' => ($quiz->questions()->max('sort_order') ?? -1) + 1,
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'type' => $r->type,
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'question_text' => $r->question_text,
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'time_limit' => $r->time_limit ?: null,
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'correct_answer' => $r->correct_answer,
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]);
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if (in_array($r->type,['multiple_choice','exclusion'])) {
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$correctIdx = (int)$r->input('correct_option', 0);
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foreach (($r->options ?? []) as $i => $opt) {
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if (!empty($opt['text'])) {
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QuizAnswerOption::create([
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'quiz_question_id' => $q->id,
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'text' => $opt['text'],
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'is_correct' => $i === $correctIdx,
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'sort_order' => $i,
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]);
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}
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}
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}
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return redirect()->route('admin.quizzes.edit', $quiz)->with('success','Frage hinzugefügt.');
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}
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public function edit(QuizQuestion $question) {
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return view('admin.quiz_questions.edit', compact('question'));
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}
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public function update(Request $r, QuizQuestion $question) {
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$r->validate([
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'type' => 'required|in:multiple_choice,exclusion,true_false,free_text',
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'question_text' => 'required|string',
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'time_limit' => 'nullable|integer|min:5|max:120',
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'correct_answer' => 'nullable|string|max:200',
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'correct_option' => 'nullable|integer|min:0|max:3',
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'options' => 'array',
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'options.*.text' => 'nullable|string|max:200',
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]);
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$question->update([
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'type' => $r->type,
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'question_text' => $r->question_text,
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'time_limit' => $r->time_limit ?: null,
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'correct_answer' => $r->correct_answer,
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]);
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if (in_array($r->type,['multiple_choice','exclusion'])) {
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$question->answerOptions()->delete();
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$correctIdx = (int)$r->input('correct_option', 0);
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foreach (($r->options ?? []) as $i => $opt) {
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if (!empty($opt['text'])) {
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QuizAnswerOption::create([
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'quiz_question_id' => $question->id,
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'text' => $opt['text'],
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'is_correct' => $i === $correctIdx,
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'sort_order' => $i,
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]);
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}
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}
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}
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return redirect()->route('admin.quizzes.edit', $question->quiz)->with('success','Frage gespeichert.');
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}
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public function destroy(QuizQuestion $question) {
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$quiz = $question->quiz;
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$question->delete();
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return redirect()->route('admin.quizzes.edit', $quiz)->with('success','Frage gelöscht.');
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}
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}
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<?php
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namespace App\Http\Controllers\Child;
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use App\Http\Controllers\Controller;
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use App\Models\{Quiz, QuizAttempt, QuizAttemptAnswer, QuizQuestion, Subject};
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use Illuminate\Http\Request;
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class QuizController extends Controller {
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public function index() {
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$subjects = Subject::all()->keyBy('id');
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$quizzes = Quiz::with('subject')->where('active',true)
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->withCount('questions')->get()->groupBy('subject_id');
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$bestScores = QuizAttempt::where('user_id',auth()->id())
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->where('status','completed')
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->selectRaw('quiz_id, MAX(score) as best')
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->groupBy('quiz_id')->pluck('best','quiz_id');
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return view('child.quiz.index', compact('subjects','quizzes','bestScores'));
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}
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public function start(Quiz $quiz) {
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abort_unless($quiz->active, 403);
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$attempt = QuizAttempt::firstOrCreate(
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['user_id'=>auth()->id(),'quiz_id'=>$quiz->id,'status'=>'in_progress'],
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['score'=>0,'current_question'=>0,'started_at'=>now()]
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);
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return redirect()->route('quiz.question', $attempt);
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}
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public function question(QuizAttempt $attempt) {
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abort_unless($attempt->user_id === auth()->id(), 403);
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if ($attempt->status === 'completed') return redirect()->route('quiz.result', $attempt);
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$question = $attempt->quiz->questions()->skip($attempt->current_question)->first();
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$pointsIfCorrect = QuizAttempt::POINTS[$attempt->current_question];
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return view('child.quiz.question', compact('attempt','question','pointsIfCorrect'));
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}
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public function answer(Request $r, QuizAttempt $attempt) {
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abort_unless($attempt->user_id === auth()->id(), 403);
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abort_if($attempt->status === 'completed', 400);
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$question = $attempt->quiz->questions()->skip($attempt->current_question)->first();
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$possible = QuizAttempt::POINTS[$attempt->current_question];
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$timedOut = $r->input('timeout') === '1';
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$answerGiven = $r->input('answer','');
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$isCorrect = false;
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$pointsEarned = 0;
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if (!$timedOut && $answerGiven !== '') {
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$isCorrect = $this->check($question, $answerGiven);
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$pointsEarned = $isCorrect ? $possible : 0;
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}
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QuizAttemptAnswer::create([
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'quiz_attempt_id' => $attempt->id,
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'quiz_question_id' => $question->id,
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'answer_given' => $timedOut ? '__timeout__' : $answerGiven,
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'is_correct' => $isCorrect,
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'points_earned' => $pointsEarned,
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]);
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session()->flash('last_answer', [
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'correct' => $isCorrect,
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'points' => $pointsEarned,
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'possible' => $possible,
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'timeout' => $timedOut,
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]);
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$next = $attempt->current_question + 1;
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$totalQuestions = $attempt->quiz->questions()->count();
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if ($next >= $totalQuestions || $next >= 10) {
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$total = QuizAttemptAnswer::where('quiz_attempt_id',$attempt->id)->sum('points_earned');
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$attempt->update(['score'=>$total,'current_question'=>$next,'status'=>'completed','completed_at'=>now()]);
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auth()->user()->increment('points', $total);
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return redirect()->route('quiz.result', $attempt);
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}
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$attempt->update(['current_question'=>$next]);
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return redirect()->route('quiz.question', $attempt);
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}
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public function result(QuizAttempt $attempt) {
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abort_unless($attempt->user_id === auth()->id(), 403);
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abort_unless($attempt->status === 'completed', 400);
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$answers = $attempt->answers()->with('question.answerOptions')->get();
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return view('child.quiz.result', compact('attempt','answers'));
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}
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private function check(QuizQuestion $q, string $answer): bool {
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return match($q->type) {
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'multiple_choice','exclusion' => ($opt = $q->answerOptions()->where('is_correct',true)->first())
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&& (string)$opt->id === $answer,
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'true_false','free_text' => strtolower(trim($answer)) === strtolower(trim((string)$q->correct_answer)),
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default => false,
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};
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}
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}
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