Rails: Pie Charts legend in Chartkicks -

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in highcharts show percentage along pie_charts, legend can customized this:

legend: {labelformat: '{name} : {y} ({percentage}%)'}

but in chartkicks can't find how this?

if @ documentation specified on chartkick gem homepage, says:

you can pass options directly charting library with:  <%= line_chart data, library: {backgroundcolor: "#eee"} %>

so in scenario, should try like: 

<%= pie_chart data, library: {legend: {labelformat: '{name} : {y} ({percentage}%)'}} %>

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