Suppose we have a `PriceList` model like this: 

```
class PriceList extends Model
{

    protected $primaryKey = 'price_list_id';

    public function products()
    {
        return $this->belongsToMany(Product::class, 'price_lists_products', 'price_list_id', 'product_id')->withPivot('price');
    }

}

```

And in the other hand `Product` is like: 

```
class Product extends Model
{
    public function price_lists()
    {
        return $this->belongsToMany(PriceList::class, 'price_lists_products', 'product_id', 'price_list_id')->withPivot('price');
    }
}

```

**Product** model has many columns like `product_id` ,`title` ,`desc`, `created_at`,`active` and so on. 

Furthermore there is a pivot table named `price_lists_products` include this fields : 

```
price_list_id
product_id
price

```

Now I want to select all products attached to a specific price list but only fetch some selected columns along with `price` column in pivot table. for that I wrote : 

```
public function prices(Request $request, PriceList $price_list)
    {
        $prices =
            $price_list->products()->select('products.product_id', 'created_at')->get();

        return $prices;
    } 

```

That returns : 

```
[
    {
        "product_id": 1,
        "created_at": "2017-12-11 12:21:49",
        "pivot": {
            "price_list_id": 1,
            "product_id": 1,
            "price": "3000.00"
        }
    },
    {
        "product_id": 2,
        "created_at": "2017-12-14 07:52:22",
        "pivot": {
            "price_list_id": 1,
            "product_id": 2,
            "price": "6000.00"
        }
    }
]

```

But I want result be in this format : 

```
[
        {
            "product_id": 1,
            "created_at": "2017-12-11 12:21:49",
            "price": "3000.00"
        },
        {
            "product_id": 2,
            "created_at": "2017-12-14 07:52:22",
            "price": "6000.00"
        }
    ]

```