belongsTo(Product::class, 'product_number', 'number'); } public function scopeFilter($query, array $filters) { $query->when($filters['search'] ?? null, function ($query, $search) { $query->whereHas('product', function ($query) use ($search) { $query->where('number', 'like', '%' . $search . '%') ->orWhere('name', 'like', '%' . $search . '%'); }); }); } }