laravel-admin 添加图表 Chartjs

github地址：https://github.com/laravel-admin-extensions/chartjs

Installation

composer require laravel-admin-ext/chartjs

php artisan vendor:publish --tag=laravel-admin-chartjs

onfiguration

Open config/admin.php, add configurations that belong to this extension at extensions section.

'extensions' => [

        'chartjs' => [
        
            // Set to `false` if you want to disable this extension
            'enable' => true,
        ]
    ]

Usage

Create a view in views directory like resources/views/admin/chartjs.blade.php, and add following codes:

<canvas id="myChart" width="400" height="400"></canvas>
<script>
$(function () {
    var ctx = document.getElementById("myChart").getContext('2d');
    var myChart = new Chart(ctx, {
        type: 'bar',
        data: {
            labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
            datasets: [{
                label: '# of Votes',
                data: [12, 19, 3, 5, 2, 3],
                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>

Then show it on the page

class ChartjsController extends Controller
{
    public function index(Content $content)
    {
        return $content
            ->header('Chartjs')
            ->body(new Box('Bar chart', view('admin.chartjs')));
    }
}

拓展：

　　折线图和柱状图一起使用

　　

<canvas id="myChart1" width="400" height="400"></canvas>
<script>
$(function () {
    var ctx = document.getElementById("myChart1").getContext('2d');
    var myChart = new Chart(ctx, {
        type: 'bar',
        data: {
            labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
            datasets: [{
                label: '# of Votes',
　　　　　　　　　　//数据类型 折线图
                type: "line",
                data: [12, 19, 3, 5, 2, 3],
                backgroundColor:'rgba(54, 162, 235, 0.1)',
                borderColor:'rgba(255,99,132,1)',
                borderWidth: 1
            },{
                label: '# of Votes',
　　　　　　　　　　//数据类型 柱状图
                type: "bar",
                data: [16, 13, 11, 15, 2, 3],
                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: [
                    'red',
                    '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: {
　　　　　　　　//显示数值
            "animation": {
                "duration": 1,
                "onComplete": function() {
                    var chartInstance = this.chart,
                    ctx = chartInstance.ctx;

                    ctx.font = Chart.helpers.fontString(Chart.defaults.global.defaultFontSize, Chart.defaults.global.defaultFontStyle, Chart.defaults.global.defaultFontFamily);
　　　　　　　　　　　　//设置字体颜色
                    ctx.fillStyle = "black";
                    ctx.textAlign = 'center';
                    ctx.textBaseline = 'bottom';

                    this.data.datasets.forEach(function(dataset, i) {
                    var meta = chartInstance.controller.getDatasetMeta(i);
                    meta.data.forEach(function(bar, index) {
                        var data = dataset.data[index];
                        ctx.fillText(data, bar._model.x, bar._model.y - 5);
                    });
                    });
                }
            },
            scales: {
                yAxes: [{
                    ticks: {
                        beginAtZero:true
                    }
                }]
            }
        }
    });
});
</script>