Replicate (Duplicate) Eloquent Model With Relations

controller.php

<?php 
public function replicateWithRelations(QuestionCategory $questioncategory)
    {
        $newCategory = $questioncategory->replicate();
        $newCategory->name = "Kopyası: ".$questioncategory->name;
        $newCategory->push();

        $questioncategory->relations = [];

        //load relations on EXISTING MODEL
        $questioncategory->load('questions');
        //re-sync everything
        foreach ($questioncategory->getRelations() as $relationName => $values){
            $newCategory->{$relationName}()->sync($values);
        }

        return redirect()->route('neon.questioncategory.edit',$newCategory->id)->withSuccess("Kategori başarıyla kopyalandı");
    }
?>

aproimorando um pouco mais no caso de quando tiver uma sub-relação

authorize('duplicateProduct', $product); $newProduct = $product->replicate(); $newProduct->name = $product->name . " [Cópia]"; $newProduct->save(); $product->relations = []; $product->load('variations.items'); $items = []; foreach ($product->variations as $variation) { $newProduct->variations()->create([ 'name' => $variation->name, 'limit_min' => $variation->limit_min, 'limit_max' => $variation->limit_max, 'ranking' => $variation->ranking, ]); foreach ($variation->items as $item) { $items[] = [ 'key' => $variation->name, 'name' => $item->name, 'ranking' => $item->ranking, 'amount' => $item->amount ]; } } $newProduct->load('variations.items'); $itemsCollection = collect($items); foreach ($newProduct->variations as $newVariation) { $itemsToSave = $itemsCollection->where('key', $newVariation->name)->map(function ($item) { return [ 'name' => $item['name'], 'ranking' => $item['ranking'], 'amount' => $item['amount'] ]; }); $newVariation->items()->createMany($itemsToSave); } return new ProductResource($newProduct); } ?>