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module StatisticsHelper
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def pie_chart name, title, data
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function = <<-EOF
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$(function () {
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new Highcharts.Chart({
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chart: {
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renderTo: '#{name}',
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borderWidth: 2,
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backgroundColor: {
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linearGradient: [0, 0, 0, 200],
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stops: [
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[0, '#ffffff'],
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[1, '#EDF6FC']
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]}
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},
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credits: {
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enabled: false,
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},
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title: {
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text: '#{title}'
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},
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tooltip: {
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formatter: function() {
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return '<b>'+ this.point.name +'</b>: '+ this.y;
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}
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},
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plotOptions: {
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pie: {
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allowPointSelect: true,
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cursor: 'pointer',
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dataLabels: {
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enabled: true,
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formatter: function() {
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return '<b>'+ this.point.name +'</b>: '+ this.y;
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}
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}
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}
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},
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series: [{
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type: 'pie',
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name: '',
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data: [ #{data.map{ |kv| "['#{kv[0]}', #{kv[1]}]"}.join(',')} ]
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}]
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});
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});
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EOF
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content_tag(:div, nil,:id=>name,:class=>'statistics_pie') +
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javascript_tag(function)
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end
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end
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