I need add data from a db in the google charts script, someone know how do? i'm programming in ruby on rails

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Miguel Angel Hernández Gómez

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Feb 24, 2017, 4:14:07 PM2/24/17
to Google Visualization API
google.charts.load('current', {'packages':['line']});
    google.charts.setOnLoadCallback(drawChart);

  function drawChart() {

    var data = new google.visualization.DataTable();
    data.addColumn('string', 'string');
    data.addColumn('number', 'The Avengers');
    data.addColumn('number', 'Transformers: Age of Extinction');

    data.addRows([
      ['line',  37.8, 80.8],
      ['line',20,20],
      ['line',  14.2, 13.4]
    ]);

    var options = {
      chart: {
        title: 'Box Office Earnings in First Two Weeks of Opening',
        subtitle: 'in millions of dollars (USD)'
      },
      width: 900,
      height: 500
    };

    var chart = new google.charts.Line(document.getElementById('grafica'));

    chart.draw(data, options);
  }



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