从php为chartjs构建javascript回调函数
我正在使用chartjs在模板上构建一个图形,效果很好,但标签存在舍入问题,可能需要显示货币符号,因此我发现我可以在工具提示中使用回调函数 现在,我正在使用php在数组中创建javascript,然后使用json_encode构建图表数据,当我运行代码时,内容被呈现,但现在工具提示消失了 阵列构建的简化版本如下所示:从php为chartjs构建javascript回调函数,php,jquery,chart.js,Php,Jquery,Chart.js,我正在使用chartjs在模板上构建一个图形,效果很好,但标签存在舍入问题,可能需要显示货币符号,因此我发现我可以在工具提示中使用回调函数 现在,我正在使用php在数组中创建javascript,然后使用json_encode构建图表数据,当我运行代码时,内容被呈现,但现在工具提示消失了 阵列构建的简化版本如下所示: $dataSets = array(); $res = new stdClass(); $res->
$dataSets = array();
$res = new stdClass();
$res->label = 'Client (paid)';
$res->backgroundColor = $palette[0]->background_color;
$res->stack = 'Stack 0';
$res->data = array_values( $pi['client'] );
$dataSets[0] = $res;
$title = new stdClass();
$title->display = true;
$title->text = 'Invoices Breakdown';
$callbacks = new stdClass();
$label = new stdClass();
$callbacks->label = "
function(tooltipItem, data) {
var label = data.datasets[tooltipItem.datasetIndex].label || '';
if (label) {
label += ': £';
}
label += Math.round(tooltipItem.yLabel * 100) / 100;
return label;
}";
$tooltips = new stdClass();
$tooltips->mode = 'index';
$tooltips->intersect = false;
$tooltips->callbacks = $callbacks;
$scales = new stdClass();
$xAxes = array();
$x = new stdClass();
$x->stacked = true;
$xAxes[] = $x;
$scales->xAxes = $xAxes;
$yAxes = array();
$y = new stdClass();
$y->stacked = true;
$yAxes[] = $y;
$scales->yAxes = $yAxes;
$ds = new stdClass();
$ds->type = 'bar';
$data = new stdClass();
$data->labels = $months;
$data->datasets = $dataSets;
$ds->data = $data;
$options = new stdClass();
$options->title = $title;
$options->tooltips = $tooltips;
$options->responsive = true;
$options->scales = $scales;
$ds->options = $options;
return $ds;
可以看出,我将回调作为字符串插入(工作版本没有$callback对象)
输出此对象的代码如下:
$chart = json_encode( $dataset );
$html .= '
<canvas id="invoiceChart" width="100" height="50"></canvas>
<script>
var ctx = document.getElementById("invoiceChart").getContext("2d");
var invoiceChart = new Chart(ctx, ' . $chart . ')
</script>';
$chart=json\u encode($dataset);
$html.='
var ctx=document.getElementById(“invoiceChart”).getContext(“2d”);
var invoiceChart=新图表(ctx,“.$Chart.”)
';
那么如何以这种方式插入回调函数呢
呈现为$chart的代码示例如下:
<script>
var ctx = document.getElementById("invoiceChart").getContext("2d");
var invoiceChart = new Chart(ctx, {"type":"bar","data":{"labels":["Sep","Oct","Nov","Dec","Jan","Feb"],"datasets":[{"label":"Client (paid)","backgroundColor":"#784187","stack":"Stack 0","data":[0,2,655,75,31.5,0]},{"label":"Client (auth)","backgroundColor":"#DDDDDD","stack":"Stack 0","data":[0,5.4,925,971.03,1227.703,402]},{"label":"Client (draft)","backgroundColor":"#003D51","stack":"Stack 0","data":[0,0,0,0,0,761.667]},{"label":"Contractor (paid)","backgroundColor":"#EA9A24","stack":"Stack 1","data":[0,166.505,9.99,0,81.93,0]},{"label":"Contractor (auth)","backgroundColor":"#E6194B","stack":"Stack 1","data":[0,0,261.451,0,2361.165,90.915]},{"label":"Contractor (draft)","backgroundColor":"#3CB44B","stack":"Stack 1","data":[0,5.4,0,0,239.71300000000002,252.77800000000002]}]},"options":{"title":{"display":true,"text":"Invoices Breakdown"},"tooltips":{"mode":"index","intersect":false,"callbacks":{"label":"\r\n function(tooltipItem, data) {\r\n var label = data.datasets[tooltipItem.datasetIndex].label || '';\r\n\r\n if (label) {\r\n label += ': \u00a3';\r\n }\r\n label += Math.round(tooltipItem.yLabel * 100) \/ 100;\r\n return label;\r\n }"}},"responsive":true,"scales":{"xAxes":[{"stacked":true}],"yAxes":[{"stacked":true}]}}})
</script>
var ctx=document.getElementById(“invoiceChart”).getContext(“2d”);
var invoiceChart=新图表(ctx,{“类型”:“条形图”,“数据”:{“标签”:[“九月”,“十月”,“十一月”,“十二月”,“一月”,“二月],“数据集”:[{“标签”:“客户(付费)”,“背景色”:“#784187”,“堆栈”:“堆栈0”,“数据”:[0,2655,75,31.5,0]},{“标签”:“客户机(授权)”,“背景色”:“#DDDDDDDD”,“堆栈”:“堆栈0”,“数据”:[0 5.4925971.031227.703402],{,“背景色”:“#003D51”,“堆栈”:“堆栈0”,“数据”:[0,0,0,0761.667],{“标签”:“承包商(已付款)”,“背景色”:“#EA9A24”,“堆栈”:“堆栈1”,“数据”:[0166.505,9.99,0,81.93,0],{“标签”:“承包商(授权)”,“背景色”:“35E6194B”,“堆栈”:“堆栈1”,“数据”:[0 0261.451,02361.165,90.915],{“承包商(授权)”,“背景色”:“#3CB44B”,“stack”:“stack 1”,“data”:[0,5.4,0,0239.713000000000002252.7780000000002]},,“options”:{“title”:{“display”:true,“text”:“Invoices Breakdown”},“tooltiptem”:“index”,“intersect”:false,“callbacks”:{“label”:“\r\n函数(tooltipItem,data){\r\n var label=data.datasets[tooltiptem.datasets].label | |“”;\r\n\r\n如果(label){\r\n label+=':\u00a3';\r\n}\r\n label+=Math.round(tooltipItem.yLabel*100)\/100;\r\n返回label;\r\n}}},“响应”:true,“缩放”:{“xAxes”:[{“堆叠”:true}、“yAxes”:[{“堆叠”:true}})
正如您所看到的(毫不奇怪),回调函数被引号包围(好吧,它是一个字符串)
那么我如何才能正确地做到这一点呢
编辑:我想我可能可以使用占位符和搜索替换,但还有其他解决方案吗
谢谢所以我最后用“,”替换了字符串,并用回调函数替换了它。没有解决方法可以这样做,并将回调放入社区提供的对象中