feat: Lernapp mit Mathe/Deutsch/Englisch, Münzsystem und Belohnungen

app/Models/Subject.php

@@ -0,0 +1,8 @@
+<?php
+namespace App\Models;
+use Illuminate\Database\Eloquent\Model;
+class Subject extends Model {
+    protected $fillable = ['name','slug','icon','color'];
+    public function questions() { return $this->hasMany(Question::class); }
+    public function activeQuestions() { return $this->questions()->where('active', true); }
+}