belongsTo(Kelas::class, 'id_kelas', 'id_kelas'); } public function pengumpulanTugas() { return $this->hasMany(PengumpulanTugas::class, 'id_siswa', 'id_siswa'); } public function badges() { return $this->hasMany(SiswaBadge::class, 'id_siswa', 'id_siswa'); } public function leaderboards() { return $this->hasMany(Leaderboard::class, 'id_siswa', 'id_siswa'); } public function pesertaChallenges() { return $this->hasMany(PesertaChallenge::class, 'id_siswa', 'id_siswa'); } }