Undefined property: Illuminate\Database\Query\Builder::$sessionId - php

Question

This is my PlayerController, Player & Session Model and Resource.
I want to use the input (sessionId from SessionsTable) to fetch user from the room with the same id (userSession) and return an array in this format: [{userId:1, userName: stacki, userVote:8},{...},...]
I already asked [here][1] to achieve this and now im stuck with this error.
What do I have to change in order to solve this issue? Simply adding ->first() does not solve my issue, I need more than one record.
namespace App\Http\Controllers;
use App\Player;
use Illuminate\Http\Request;
use App\Http\Resources\Players as PlayerResource;
class PlayerController extends Controller
{
public function index(Request $request)
{
$room = $request->input('sessionId');
$currentPlayers = Player::where('userSession', $room)->get();
return PlayerResource::collection($currentPlayers);
}
public function create()
{ }
public function update()
{ }
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Player extends Model
{
protected $fillable = [];
public $sortable = [
'userId',
'userName',
'userVote'
];
public function sessions()
{
return $this->hasMany('App\Session');
}
public function players(){
return $this->belongsToMany('App\Session');
}
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Session extends Model
{
protected $fillable = [];
public function user(){
return $this->belongsToMany('App\Player');
}
public function creator()
{
return $this->hasOne('App\Player', 'userId');
}
}
class Players extends ResourceCollection
{
/**
* Transform the resource collection into an array.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
public function toArray($request)
{
return [
'userId' => $this->sessionId,
'userName' => $this->userName,
'userVote' => $this->userVote
];
}
}
`
[1]: https://stackoverflow.com/questions/58062014/display-db-entries-in-json-array-in-controller-laravel-php

Answer 1

Your Player class might extends the Illuminate\Http\Resources\Json\JsonResource instead of ResourceCollection.
This should solve your problem.
use Illuminate\Http\Resources\Json\JsonResource;
class Players extends JsonResource
{
/**
* Transform the resource collection into an array.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
public function toArray($request)
{
return [
'userId' => $this->sessionId,
'userName' => $this->userName,
'userVote' => $this->userVote
];
}
}
Hope it helps.