problema com chart no angular

[Pedroalves 1]

 

o problema é o seguinte eu criei um gráfico e agora quero buscar dados mas so consigo por a funcionar se por assim estou a usar o angular 7, nodejs e mongodb

let TotalSell = function() {
    var data = {
        labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
        datasets: [{
            label: 'My First dataset',
            fillColor: 'rgba(220,220,220,0.2)',
            strokeColor: 'rgba(220,220,220,1)',
            pointColor: 'rgba(220,220,220,1)',
            pointStrokeColor: '#fff',
            pointHighlightFill: '#fff',
            pointHighlightStroke: 'rgba(220,220,220,1)',
      data: [65, 59, 80, 81, 56, 55, 40, 84, 64, 120, 132, 87]
        }]
    };
var options = {

        maintainAspectRatio: false,

        // Sets the chart to be responsive
        responsive: true,

        ///Boolean - Whether grid lines are shown across the chart
        scaleShowGridLines: true,

        //String - Colour of the grid lines
        scaleGridLineColor: 'rgba(0,0,0,.05)',

        //Number - Width of the grid lines
        scaleGridLineWidth: 1,

        //Boolean - Whether the line is curved between points
        bezierCurve: false,

        //Number - Tension of the bezier curve between points
        bezierCurveTension: 0.4,

        //Boolean - Whether to show a dot for each point
        pointDot: true,

        //Number - Radius of each point dot in pixels
        pointDotRadius: 4,

        //Number - Pixel width of point dot stroke
        pointDotStrokeWidth: 1,

        //Number - amount extra to add to the radius to cater for hit detection outside the drawn point
        pointHitDetectionRadius: 20,

        //Boolean - Whether to show a stroke for datasets
        datasetStroke: true,

        //Number - Pixel width of dataset stroke
        datasetStrokeWidth: 2,

        //Boolean - Whether to fill the dataset with a colour
        datasetFill: true,

        // Function - on animation progress
        onAnimationProgress: function() {
        },

        // Function - on animation complete
        onAnimationComplete: function() {
        },

        //String - A legend template
        legendTemplate: '<ul class="tc-chart-js-legend"><% for (var i=0; i<datasets.length; i++){%><li><span style="background-color:<%=datasets[i].strokeColor%>"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>'
    };
    // Get context with jQuery - using jQuery's .get() method.
    var ctx = $("#TotalSell").get(0).getContext("2d");
    // This will get the first returned node in the jQuery collection.
    var chart1 = new Chart(ctx).Line(data, options);
    //generate the legend
    var legend = chart1.generateLegend();
    //and append it to your page somewhere
    $('#TotalSellLegend').append(legend);
};

<div class="col-sm-6">
            <h5 class="over-title margin-bottom-15" style="text-align:center;">Total Sell</h5>
            <canvas id="TotalSell" class="full-width"></canvas>
            <div class="margin-top-20">
              <div class="inline pull-left">
                <div id="TotalSellLegend" class="chart-legend"></div>
              </div>
            </div>
          </div>

o meu problema é como ponho a mostrar dados sem inserir dados aqui data: [65, 59, 80, 81, 56, 55, 40, 84, 64, 120, 132, 87] }] o meu objectivo é quando por a minha base de dados ele for buscar los a minha base de dados ou seja não quero ter que inserir manualmente no data:[] basicamente quero passar de dados staticos para dinamicos o que estou a fazer de errado