Issue: [ng:areq] The parameter 'PieController' is not properly defined, it is currently undefined

Why am I getting an error when using ng-controller='DoughnutCtrl' in a dive?

Error: [ng:areq] Argument 'DoughnutCtrl' is not a function, got undefined

Here is my Chart.js code:

'use strict';

angular.module('portfolioApp',['chart.js']).
controller('DoughnutCtrl', function ($scope) 
{
$scope.data = [[
    {
      value: 80,
      color: "#949FB1",
      highlight: "#A8B3C5",
      label: "80%"
    },
    {
      value: 20,
      color: "#4D5360",
      highlight: "#616774",
      label: ""
    }

  ],
  [
    {
      value: 70,
      color: "#000000",
      highlight: "#A8B3C5",
      label: "80%"
    },
    {
      value: 30,
      color: "#ffffff",
      highlight: "#167740",
      label: ""
    }
];
 });

And this is my HTML code:

<div ng-app="portfolioApp">
<div ng-controller="DoughnutCtrl">

  <canvas tc-chartjs-doughnut chart-options="options" chart-data="data" auto-legend></canvas>

</div>

I am new to AngularJS, can anyone help me understand why this error is occurring?

javascriptangularjs

Answer №1

The issue at hand is your attempt to utilize the directive tc-chartjs-doughnut within a canvas element.

<canvas tc-chartjs-doughnut chart-options="options" chart-data="data" auto-legend></canvas>

This directive belongs to the tc-angular-chartjs module.

In your Angular module, you are including both the chart.js module and the angular-chart.js module.

Having different modules for HTML and JS will lead to conflicts. You need to choose one module and ensure its related dependencies are included in the project.

Your HTML code contains chart-options="options" which is not bound to the $scope. You should define it like this:

$scope.options = {}; // Add necessary options based on requirements

Refer to the working example below:

angular
  .module('myModule',['tc.chartjs'])
  .controller( 'DoughnutCtrl', function( $scope ) {

    // Chart.js Data
    $scope.data = [
      {
        value: 300,
        color:'#F7464A',
        highlight: '#FF5A5E',
        label: 'Red'
      },
      {
        value: 50,
        color: '#46BFBD',
        highlight: '#5AD3D1',
        label: 'Blue'
      },
      {
        value: 100,
        color: '#FDB45C',
        highlight: '#FFC870',
        label: 'Yellow'
      }
    ];

  });
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.2/Chart.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="http://carlcraig.github.io/tc-angular-chartjs/js/vendor/tc-angular-chartjs.min.js"></script>
<div ng-app="myModule">
  <div ng-controller="DoughnutCtrl">

    <canvas tc-chartjs-doughnut chart-data="data" auto-legend></canvas>

  </div>
</div>

Answer №2

There is a possibility that the module portfolioApp has been declared twice.

// Here we are creating the module and providing dependencies
angular.module('portfolioApp', ['chart.js']);

as opposed to

// This snippet only retrieves the module if it has already been defined
angular.module('portfolioApp');

If you're encountering this issue, you might find solutions in a similar question here:
Error: [ng:areq] from angular controller

Answer №3

Here are the codes needed:

'use strict';

  var app = angular.module('portfolioApp',['chart.js']);
    app.controller('DoughnutCtrl', function ($scope) 
    {
    $scope.data = [[
        {
          value: 80,
          color: "#949FB1",
          highlight: "#A8B3C5",
          label: "80%"
        },
        {
          value: 20,
          color: "#4D5360",
          highlight: "#616774",
          label: ""
        }

      ],
      [
        {
          value: 70,
          color: "#000000",
          highlight: "#A8B3C5",
          label: "80%"
        },
        {
          value: 30,
          color: "#ffffff",
          highlight: "#167740",
          label: ""
        }
      ]];
     });

Answer №4

It appears that you are mentioning the specific example found at:

In order to properly use this module, make sure to inject 'tc.chartjs' instead of 'chart.js'. Update your code as follows:

var app = angular.module('portfolioApp', ['tc.chartjs']);

Additionally, confirm that your div with ng-app surrounds the div with ng-controller:

<div ng-app="portfolioApp">
  <div ng-controller="DoughnutCtrl">
    <canvas tc-chartjs-doughnut chart-options="options" chart-data="data" auto-legend>
      </canvas>
   </div>
</div>

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