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Chart.js canvas rendered by ng-repeat does not show charts #717

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ariomex opened this issue Apr 11, 2020 · 2 comments
Open

Chart.js canvas rendered by ng-repeat does not show charts #717

ariomex opened this issue Apr 11, 2020 · 2 comments

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@ariomex
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ariomex commented Apr 11, 2020

I am trying to create line chart with angularjs and chart.js below is my code:

<link rel="stylesheet"
   href="http://jtblin.github.io/angular-chart.js/node_modules/bootstrap/dist/css/bootstrap.min.css">
<script
 src="http://jtblin.github.io/angular-chart.js/node_modules/angular/angular.min.js"></script>
<script
 src="http://jtblin.github.io/angular-chart.js/node_modules/chart.js/dist/Chart.min.js"></script>
<script
 src="http://jtblin.github.io/angular-chart.js/dist/angular-chart.js"></script>
<script>
 var app = angular.module('myAPP', ['chart.js'])
 app.controller('ChartController', function ($scope, $http) {
     $scope.counter = [1, 2, 3]
     $scope.labels = []
     $scope.data = []
     $scope.labels[ 1 ] = [1, 2, 3, 4]
     $scope.labels[ 2 ] = [1, 2, 3]
     $scope.labels[ 3 ] = [1, 2, 3, 4, 5]
     $scope.data[ 1 ] = [1, 2, 0, 4]
     $scope.data[ 2 ] = [5, 1, 7]
     $scope.data[ 3 ] = [5, 6, 2, 8, 9]
     $scope.chartOptions = {
         legend: {
             display: true,
         },
         title: {
             display: true,
             text: 'title'
         }
     }
 })
</script>
<body ng-app="myAPP" ng-controller="ChartController">
<div ng-repeat="n in counter">
 <canvas
     class="chart chart-line"
     chart-options="chartOptions"
     chart-data="data['{{n}}']"
     chart-labels="labels['{{n}}']"
 />
</div>
</body>

here i am creating canvas using ng-repeat

<div ng-repeat="n in counter">
        <canvas
            class="chart chart-line"
            chart-options="chartOptions"
            chart-data="data['{{n}}']"
            chart-labels="labels['{{n}}']"
        />
    </div>

but unfortunately no chart is rendered, but when i type data and label tags manually like below, charts are shown.

<div ng-repeat="n in counter">
        <canvas
            class="chart chart-line"
            chart-options="chartOptions"
            chart-data="data['1']"
            chart-labels="labels['1']"
        />
</div>

below are 2 examples:

working example

not working example

would you please help me find out what am i doing wrong in "not working example"?
@ar600
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ar600 commented Apr 29, 2020

you need to assign a unique ID to each chart data to get it to work

@jubilee2
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jubilee2 commented Aug 8, 2021

try

<div ng-repeat="n in counter">
        <canvas
            class="chart chart-line"
            chart-options="chartOptions"
            chart-data="data[n]"
            chart-labels="labels[n]"
        />
</div>

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3 participants
@jubilee2 @ar600 @ariomex