javascript - 使用 Chart.js 和 PHP 动态创建图表

问题描述

我们目前正在使用客户温度计在完成支持票后调查我们的客户。不幸的是，customerthermometers 小部件看起来很恶心。所以我目前正在尝试使用 Chart.js 创建一个图表，并使用 PHP 从 customerthermometers 的 API 动态获取数据。

图表中考虑了 PHP 数组 ($dataPoints) 中的所有部分，“数据”除外，我真的不知道如何进一步处理。

<?php
$gold = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=1' );
$green = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=2' );
$yellow = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=3' );
$red = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=4' );

$dataPoints = array(
  array( "label" => "Gold Star" , "data" => $gold , "backgroundColor" => "rgba(255,215,0,1)"),
  array( "label" => "Green Light" , "data" => $green , "backgroundColor" => "rgba(0,128,0,1)"),
  array( "label" => "Yellow Light" , "data" => $yellow , "backgroundColor" => "rgba(255,255,0,1)"),
  array( "label" => "Red Light" , "data" => $red , "backgroundColor" => "rgba(255,0,0,1)" )
);
?>
<html>
<head>
<meta charset="utf-8">
<title>Chart Test</title>
</head>

<body>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <script src="../assets/chart28/dist/Chart.js"></script>
    <canvas id="myChart" width="100" height="20"></canvas>
<script>
var ctx = document.getElementById('myChart');
var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
        labels: ['Gold Star', 'Green Light', 'Yellow Light', 'Red Light'],
        datasets: <?php echo json_encode($dataPoints, JSON_NUMERIC_CHECK); ?>
    },
    options: {
        scales: {
            yAxes: [{
                ticks: {
                    beginAtZero: true
                }
            }]
        }
    }
});
</script>
    <?php echo json_encode($dataPoints, JSON_NUMERIC_CHECK); ?>
</body>
</html>

编辑： $dataPoints

[{"label":"Gold Star","data":4,"backgroundColor":"rgba(255,215,0,1)"},{"label":"Green Light","data":2,"backgroundColor":"rgba(0,128,0,1)"},{"label":"Yellow Light","data":0,"backgroundColor":"rgba(255,255,0,1)"},{"label":"Red Light","data":0,"backgroundColor":"rgba(255,0,0,1)"}]

我还尝试在中静态设置以下值datasets，这有效并给了我想要的结果：

datasets: [{
    data: [ 4 , 2 , 0 , 0 ],
    backgroundColor: [
        "rgba(255,215,0,1)",
        "rgba(0,128,0,1)",
        "rgba(255,255,0,1)",
        "rgba(255,0,0,1)"
    ]

}]

工作代码（感谢@Camille）：

<?php
$gold = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=1' );
$green = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=2' );
$yellow = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=3' );
$red = file_get_contents( 'https://app.customerthermometer.com/api.php?apiKey=<api_key>&getMethod=getNumResponsesValue&temperatureID=4' );

$dataPoints = array(
  array( "data" => array($gold) , "label" => "Gold Star" , "backgroundColor" => "rgba(255,215,0,1)"),
  array( "data" => array($green) , "label" => "Green Light" , "backgroundColor" => "rgba(0,128,0,1)"),
  array( "data" => array($yellow) , "label" => "Yellow Light" , "backgroundColor" => "rgba(255,255,0,1)"),
  array( "data" => array($red) , "label" => "Red Light" , "backgroundColor" => "rgba(255,0,0,1)" )
);

?>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
</head>

<body>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
    <script src="../assets/chart28/dist/Chart.js"></script>
    <canvas id="myChart" width="100" height="20"></canvas>
<script>
var ctx = document.getElementById('myChart');
var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
        labels: ['Customer Thermometer'],
        datasets: <?php echo json_encode($dataPoints, JSON_NUMERIC_CHECK); ?>
    },
    options: {
        scales: {
            yAxes: [{
                ticks: {
                    beginAtZero: true,
                }
            }]
        }
    }
});
</script>
</body>
</html>

标签： javascriptphpchart.js

javascript - 使用 Chart.js 和 PHP 动态创建图表

问题描述

解决方案

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