Laravel 9 - RateLimiter unable to access protected property in Job - php

Question

I have been trying to queue a job with Laravel 9 and setting a rate limit, to the API I am going to hit. The limit is max 10 requests per minute.
My AppServiceProvider.php
namespace App\Providers;
use Illuminate\Cache\RateLimiting\Limit;
use Illuminate\Support\Facades\RateLimiter;
use Illuminate\Support\ServiceProvider;
class AppServiceProvider extends ServiceProvider
{
public function register() {}
public function boot()
{
RateLimiter::for('sendContentStackToEasyTranslate', function($job) {
return Limit::perMinute(10)->by($job->entry->id);
});
}
}
My middleware and constructor in SenCSToET.php job
namespace App\Jobs;
use App\Models\ContentStackEntry;
use Exception;
use GuzzleHttp\Client;
use GuzzleHttp\Exception\ClientException;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldBeUnique;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\Middleware\RateLimited;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Cache;
use IncrediblePony\Auditlog\Traits\AuditlogTrait;
class SendCSToET implements ShouldQueue
{
use Dispatchable, InteractsWithQueue, Queueable, SerializesModels, AuditlogTrait;
/**
* #var \App\Models\ContentStackEntry
*/
protected $entry;
/**
* Create a new job instance.
*
* #param \App\Models\ContentStackEntry
* #return void
*/
public function __construct(ContentStackEntry $entry)
{
$this->entry = $entry;
}
/**
* Get the middleware the job should pass through.
*
* #return array
*/
public function middleware() {
return [new RateLimited('sendContentStackToEasyTranslate')];
}
}
https://laravel.com/docs/9.x/queues#rate-limiting is my source of this approach.
When the code is hit the error is presented to me:
{
"message": "Cannot access protected property App\\Jobs\\SendCSToET::$entry",
"exception": "Error",
"file": "/var/www/services/test-translation/releases/6/app/Providers/AppServiceProvider.php",
"line": 30,
}
BUT if I change the $entry variable in SendCSToET.php file from protected to public the code runs as expected. What am I missing?

Answer 1

It's a simple PHP behaviour, the callback from your RateLimiter does not belong to SendCSToET class or any subclass, so it can only access public properties/methods. So you have to choose between a public property or protected + public getter (cleaner way).
Example getter function in SendCSToEt.php:
protected $entry;
public function getEntry() {
return $this->entry;
}