Validation

Grpcavel brings Laravel's powerful validation system to gRPC.

Defining Rules

Define validation rules in your request DTO by extending GrpcRequest and implementing the rules() method:

namespace App\Grpc\Requests;

use Grpcavel\Http\Requests\GrpcRequest;

class GetUserRequest extends GrpcRequest
{
    public function __construct(
        public readonly int $id
    ) {}

    public function rules(): array
    {
        return [
            'id' => 'required|integer|exists:users,id'
        ];
    }
}

Automatic Validation

When a request arrives at the gRPC server:

1. Grpcavel instantiates your Request DTO.
2. It automatically runs the validator using your rules().
3. If validation fails, it returns a INVALID_ARGUMENT gRPC status code along with the error messages.
4. If validation passes, your service method is called.