Laravel Rule: Custom Validation Depending Upon Two Request Inputs - php

Question

I want to validate if the user is associated with the order in the request validation.
Order Migration:
$table->bigIncrements('id');
$table->unsignedBigInteger('user_id')->nullable();
...
$table->timestamps();
$table->softDeletes();
User Table:
$table->bigIncrements('id');
$table->string('name');
$table->string('email')->unique();
$table->timestamps();
I have manually created a function to check if the order is associated with the user
public function checkIfOrderIsAssociatedWithTheUser(Request $request){
$checkExistsStatus = Order::where('id',$request->order_id)->where('user_id', $request->user_id)->exists();
return $checkExistsStatus;
}
When I need to check the associate, I have to call this function like:
$this->validate($request, [
'order_id' => 'required|exists:orders,id',
'user_id' => 'required|exists:users,id'
]);
$checkExistsStatus = $this->checkIfOrderIsAssociatedWithTheUser($request);
if(!$checkExistsStatus){
return redirect()->back()->withErrors([
'Order and user is not linked'
]);
}else{
...
}
I tried to create a new rule: CheckAssociationBetweenOrderAndUser but I am unable to pass the user_id to it.
$this->validate($request, [
//unable to pass user_id
'order_id' => ['required', new CheckAssociationBetweenOrderAndUser()]
]);
Is there any better way to validate the association check by creating a custom new rule? Or this is the only way to check the association?

Answer 1

Creating a custom rule was a good attempt. You can pass the $request as param in the constructor like
$this->validate($request, [
'field' => ['required', new CustomRule ($request)]
]);
namespace App\Rules;
use Illuminate\Contracts\Validation\Rule;
use Illuminate\Http\Request;
class CustomRule implements Rule
{
protected $request;
public function __construct(Request $request)
{
$this->request = $request;
}
...
}