Class not found in job with protected variable - php

Question

I'm trying to create a Job, but when i set the line:
protected $param;
to pass the data from __construct to handle() I start getting this error:
Class not found
When I removed the protected $param; line, the Job works perfectly. But I'm not able to get the data. What can I do to fix this?
<?php
namespace App\Jobs;
use App\Jobs\Job;
use Illuminate\Queue\SerializesModels;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Queue\ShouldQueue;
use App\Repositories\ProductRepository;
class ImportProducts extends Job implements ShouldQueue
{
use InteractsWithQueue, SerializesModels;
protected $param;
/**
* Create a new job instance.
*
* #return void
*/
public function __construct($param)
{
$this->param = $param;
}
/**
* Execute the job.
*
* #return void
*/
public function handle()
{
//$products = $this->param['products'];
exit();
}
}
This is the entire error message:
Whoops, looks like something went wrong.
1/1
ReflectionException in Container.php line 734:
Class does not exist
in Container.php line 734
at ReflectionClass->__construct('') in Container.php line 734
at Container->build('', array()) in Container.php line 629
at Container->make('', array()) in Application.php line 697
at Application->make('') in Job.php line 154
at Job->resolve('') in Job.php line 210
at Job->failed() in SyncQueue.php line 153
at SyncQueue->handleFailedJob(object(SyncJob)) in SyncQueue.php line 36
at SyncQueue->push(object(ImportProducts), '', 'upload_products_file') in Queue.php line 40
at Queue->pushOn('upload_products_file', object(ImportProducts)) in Dispatcher.php line 135
at Dispatcher->pushCommandToQueue(object(SyncQueue), object(ImportProducts)) in Dispatcher.php line 117
at Dispatcher->dispatchToQueue(object(ImportProducts)) in Dispatcher.php line 66
at Dispatcher->dispatch(object(ImportProducts)) in DispatchesJobs.php line 17
at Controller->dispatch(object(ImportProducts)) in ProductController.php line 656
at ProductController->importProducts(object(Request))
at call_user_func_array(array(object(ProductController), 'importProducts'), array(object(Request))) in Controller.php line 80
at Controller->callAction('importProducts', array(object(Request))) in ControllerDispatcher.php line 146
at ControllerDispatcher->call(object(ProductController), object(Route), 'importProducts') in ControllerDispatcher.php line 94
at ControllerDispatcher->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
at Pipeline->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103
at Pipeline->then(object(Closure)) in ControllerDispatcher.php line 96
at ControllerDispatcher->callWithinStack(object(ProductController), object(Route), object(Request), 'importProducts') in ControllerDispatcher.php line 54
at ControllerDispatcher->dispatch(object(Route), object(Request), 'App\Http\Controllers\ProductController', 'importProducts') in Route.php line 174
at Route->runController(object(Request)) in Route.php line 140
at Route->run(object(Request)) in Router.php line 724
at Router->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in VerifyCsrfToken.php line 64
at VerifyCsrfToken->handle(object(Request), object(Closure))
at call_user_func_array(array(object(VerifyCsrfToken), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in ShareErrorsFromSession.php line 49
at ShareErrorsFromSession->handle(object(Request), object(Closure))
at call_user_func_array(array(object(ShareErrorsFromSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in StartSession.php line 64
at StartSession->handle(object(Request), object(Closure))
at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))
at call_user_func_array(array(object(AddQueuedCookiesToResponse), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in EncryptCookies.php line 59
at EncryptCookies->handle(object(Request), object(Closure))
at call_user_func_array(array(object(EncryptCookies), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103
at Pipeline->then(object(Closure)) in Router.php line 726
at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 699
at Router->dispatchToRoute(object(Request)) in Router.php line 675
at Router->dispatch(object(Request)) in Kernel.php line 246
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
at Pipeline->Illuminate\Routing\{closure}(object(Request)) in CheckForMaintenanceMode.php line 44
at CheckForMaintenanceMode->handle(object(Request), object(Closure))
at call_user_func_array(array(object(CheckForMaintenanceMode), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
at Pipeline->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103
at Pipeline->then(object(Closure)) in Kernel.php line 132
at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 99
at Kernel->handle(object(Request)) in index.php line 54

Answer 1

When a job use SerializesModels trait expect a Eloquent model in the constructor.
You gave something different from an Eloquent Model in the constructor and Laravel, because the trait SerializesModels is trying to reconstruct the Eloquent object from the class of $param, but it cannot find it.
Try to remove SerializesModels from the traits of the job.