first(); $lastNumber = $latestAspek ? intval(substr($latestAspek->kode_aspek, 1)) : 0; $newNumber = $lastNumber + 1; $aspek->kode_aspek = 'A' . str_pad($newNumber, 3, '0', STR_PAD_LEFT); }); } public function kriteria() { return $this->hasMany(Kriteria::class, 'id_aspek'); } }