如何在chart.js中显示圆环图上的标签

我想知道如何在甜甜圈图和图例上显示标签，我正在使用chart.js作为插件

我用了scaleShowLabels: true，但不起作用

这是我的代码：

  var data = [{
    value: 30,
    color: "#F7464A",
    label: "Yasser"
}, {
    value: 50,
    color: "#E2EAE9",
    label: "Zeyd"
}, {
    value: 100,
    color: "#D4CCC5",
    label: "Mouad"
}, {
    value: 40,
    color: "#949FB1",
    label: "Hanine"
}, {
    value: 120,
    color: "#4D5360",
    label: "Kheira"
}
]
var options = {
    animation: false,
    scaleShowLabels: true
};
//Get the context of the canvas element we want to select
var c = $('#myChart');
var ct = c.get(0).getContext('2d');
var ctx = document.getElementById("myChart").getContext("2d");
/*************************************************************************/
myNewChart = new Chart(ct).Doughnut(data, options);

演示+代码