Laravel Validation in a Web based App -Part 2

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In Part One, we covered how to validate a simple JSON request. In this article, we’ll look at how to handle more complex requests, such as validating a JSON payload with a nested array of objects like the one below:

{
"order_items": [
        {
            "product_id": "8",
            "quantity": "1"
        },
        {
            "product_id":"6",
            "quantity": "2A"
        }
    ]
}

We’ll focus only on the validation part here. For the complete implementation, refer to Part One of this series.

use App\Models\Order;
use Illuminate\Support\Facades\Validator;

$validator = Validator::make($request->all(), [
    'order_items.*.product_id' => 'required|exists:products,id',
    'order_items.*.quantity' => 'required|numeric',
]);

if ($validator->fails()) {
    return response()->json(['errors' => $validator->errors()], 422);
}

foreach ($request->order_items as $item) {
    OrderDetails::create([
        'product_id' => $item['product_id'],
        'quantity' => $item['quantity'],
    ]);
}

In Laravel, the * symbol is used to indicate that the validation rule should be applied to each item in a nested array. Each nested key must be specified in this format for Laravel to apply the rules correctly.

Refer to the Laravel Validation Documentation for more details on available validation rules and advanced usage.

Comment response for the given request.