我正在将Laravel 7与MySQL和Charts.js结合使用。我不确定如何在JSON的MySQL数据库中回显/显示两列（“ player_name”和“ kills”）的数据。通常laravel有一个@foreach循环，它像这样显示数据：
@php
foreach($player_stats as $player) {
echo "['".$player->player_name."', ".$player->kills."],";
}
@endphp
但是我不确定如何在javascript / JSON中使用它。请帮忙？这是我得到的错误以及我的其余代码：
错误消息：
Facade\Ignition\Exceptions\ViewException
Undefined variable: player_name (View: C:\wamp64\www\GeneralTesting\resources\views\show-players.blade.php)
PlayerController.php：
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Player;
class PlayerController extends Controller
{
public function playerstats() {
$player_stats = Player::all();
return view("show-players", compact("player_stats"));
}
}
路由文件（web.php）：
Route::get("players", "PlayerController@playerStats");
查看（show-players.blade.php）：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="">
<title>Simple Sidebar - Start Bootstrap Template</title>
<!-- Bootstrap core CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<!-- Custom styles for this template -->
<link href="../assets/css/simple-sidebar.css" rel="stylesheet">
<style type="text/css">
#chart-container {
width: 100%;
height: auto;
}
</style>
<!-- CHARTS MIS JS scripts -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js" integrity="sha256-R4pqcOYV8lt7snxMQO/HSbVCFRPMdrhAFMH+vr9giYI=" crossorigin="anonymous"></script>
<!-- <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/5.0.0-alpha1/js/bootstrap.bundle.min.js" integrity="sha256-U1mGlmAJ9EtQbmI39+qR12ar8kk5Zm2zskTIUmwCS88=" crossorigin="anonymous"></script> -->
</head>
<body>
<div class="d-flex" id="wrapper">
<!-- Sidebar -->
<div class="bg-light border-right" id="sidebar-wrapper">
<div class="sidebar-heading">Start Bootstrap </div>
<div class="list-group list-group-flush">
<a href="#" class="list-group-item list-group-item-action bg-light">Dashboard</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Shortcuts</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Overview</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Events</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Profile</a>
<a href="#" class="list-group-item list-group-item-action bg-light">Status</a>
</div>
</div>
<!-- /#sidebar-wrapper -->
<!-- Page Content -->
<div id="page-content-wrapper">
<nav class="navbar navbar-expand-lg navbar-light bg-light border-bottom">
<button class="btn btn-primary" id="menu-toggle">Toggle Menu</button>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav ml-auto mt-2 mt-lg-0">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</a>
<div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
<div class="container">
<div class="row">
<div class="col">
COL 1
<!-- CHART.JS HTML ETC -->
<div id="chart-container">
<canvas id="graphCanvas"></canvas>
</div>
<script>
var ctx = document.getElementById('graphCanvas').getContext('2d');
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: {!! json_encode($player_name) !!},
datasets: [{
label: 'player name',
data: {!! json_encode($kills) !!},
backgroundColor: ['rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255, 99, 132, 1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
}
}
});
</script>
<!--END OF CHART.JS HTML ETC -->
</div>
<div class="col-md-auto">
COL 2
</div>
<div class="col col-lg-2">
COL 3
</div>
</div>
</div>
</div>
<!-- /#page-content-wrapper -->
</div>
<!-- /#wrapper -->
<!-- BOOSTRAP JS FOR DROP DOWN MENU -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<!-- Menu Toggle Script -->
<script>
$("#menu-toggle").click(function(e) {
e.preventDefault();
$("#wrapper").toggleClass("toggled");
});
</script>
</body>
</html>
在控制器中使用：
dump($variable);