Undefined property: stdClass:: in laravel - laravel

Question

I want to show user orders and use this code:
#foreach($orderHistory as $order)
<div class="with-spacing three-col orders" id="works-grid">
<div class="work-item branding ui-ux">
<div class="work-detail">
<a href="#">
<img src="images/portfolio-1.jpg" alt="">
<div class="work-info">
<div class="centrize">
<div class="v-center">
<h3>{{ $order->product_name }}</h3>
<p> {{ $order->product_price }}</p>
</div>
</div>
</div>
</a>
</div>
</div>
</div>
#endforeach
controller:
$orderHistory = DB::table('cart')
->where('user_id', auth()->id())
->join('singleproducts', 'singleproducts.id', '=', 'cart.product_id')
->select('singleproducts.name', 'cart.qty', 'cart.product_price')
->get();
return view('UI.UserProfile.profile' , compact('orderHistory'));
and the error is: " Undefined property: stdClass::$product_name "
what is the problem?

Answer 1

Typo, you are selecting the column "name" from the database.
#foreach($orderHistory as $order)
<div class="with-spacing three-col orders" id="works-grid">
<div class="work-item branding ui-ux">
<div class="work-detail">
<a href="#">
<img src="images/portfolio-1.jpg" alt="">
<div class="work-info">
<div class="centrize">
<div class="v-center">
<h3>{{ $order->name }}</h3>
<p> {{ $order->product_price }}</p>
</div>
</div>
</div>
</a>
</div>
</div>
</div>
#endforeach
or change the query
$orderHistory = DB::table('cart')
->where('user_id', auth()->id())
->join('singleproducts', 'singleproducts.id', '=', 'cart.product_id')
->select('singleproducts.name as product_name', 'cart.qty', 'cart.product_price')
->get();
return view('UI.UserProfile.profile' , compact('orderHistory'));

Answer 2

The problem is that $orderis not an object and you're trying to access it like an object. Perhaps it's an array - try accessing it as such.
We can't be sure unless we see where $order is defined in your controller maybe. One quick way is to place a #dd($order) just after initializing the for loop. That dumps the variable so you can see it's format.
Your query should be like this:
$orderHistory = DB::table('cart')
->where('user_id', auth()->id())
->join('singleproducts', 'singleproducts.id', '=', 'cart.product_id')
->select('singleproducts.name as product_name', 'cart.qty as quantity', 'cart.product_price as product_price')
->get();
return view('UI.UserProfile.profile' , compact('orderHistory'));
So you end up with an array of objects in this format:
[
{
product_name: 'name',
product_price: 555.00,
quantity: 2
}
...
{}
]