MongoDB: How to update an item in an array using laravel - laravel

Question

In mongoDB, I have a table product :
{
"_id" : ObjectId("61e93a99667ad949974948fb"),
"listProduct" : [
{
"_id" : "61e93aceebadb38d243fa321",
"name" : "Product 1",
"order" : 1,
"childProduct" : [
{
"_id" : "61e93aceebadb38d243fa322",
"name" : "Samsung",
"description" : "New Samsung",
"productOn" : 1676351448
},
{
"_id" : "61ee808140451a00b4eee93c",
"name" : "Iphone",
"description" : "New Iphone",
"productOn" : 1676605213
},
],
}
],
}
In Models:
<?php
namespace App\Models\Backend\Mongo;
use Jenssegers\Mongodb\Eloquent\Model as Eloquent;
class Product extends Eloquent
{
protected $connection = 'mongodb';
protected $collection = 'product';
protected $guarded = ['_id'];
protected $dateFormat = 'U';
protected $fillable = [
'listProduct',
];
}
And in the laravel controller, I update the productOn field for it:
use App\Repositories\MongoDB\ProductRepository;
protected $productRepository;
public function __construct(
ProductRepository $productRepository,
) {
$this->productRepository = $productRepository;
}
public function updateProductOn()
{
$product = $this->productRepository->getModel()::where('_id', '=', '61e93a99667ad949974948fb')->first();
if ($product) {
$product->listProduct[0]['childProduct'][0]['productOn'] = strtotime('now');
$product->save();
}
}
And when I run that function, and save it, it gets the following error:
"message": "Indirect modification of overloaded property App\\Models\\Mongo\\Product::$listProduct has no effect",
"exception": "ErrorException",
I have researched and learned how to product->push and I have followed it, but it still doesn't work.And I also know push to save an array.
$product->push("listProduct[0].childProduct[0].productOn", strtotime('now'));
or
$product->push("listProduct[0]['childProduct'][0]['productOn']", strtotime('now'));
Is there any way to update productOn, please give me any suggestions. Thanks.