How to count the total price of order?

Question

I have these tables:

Orders: 
id - status -user_id - address_id 
1     await    1          1 

products:
id -  name -   price  - quantity
1     test1    100$             


        

Answer 1

You can retrieve the pivot table columns by accessing the pivot attribute, this has been there for a long while.

By default, only the model keys will be present on the pivot object. If your pivot table contains extra attributes, you must specify them when defining the relationship:

In your case you can define the relationship like in the following code:

class Order extends Model {
    public function products()
    {
        return $this->belongsToMany(Order::class)->withPivot('quantity')
    }
}

Now the quantity column on the order_product table will be accessible via the pivot attribute (e.g. $order->products()->first()->pivot->quantity).

In the end, here is the resulting code to calculate the order total:

$total = 0;
foreach ($product as $products) {
    $total += $product->price * $product->pivot->quantity
}

$total += $order->address()->city->shipping_charges

Source: https://laravel.com/docs/master/eloquent-relationships#many-to-many