angular-chart.js provider and injectors not working

Question

I've been trying to test out angular-chart.js for my current project, but I haven't even been able to get past the installation phase. Following the directions outlined on the angular-chart.js site (specifically the pie chart example), I added the proper dependencies for all of the components, but I'm still getting errors. Best I can figure is that there's a conflict with another dependency or that I called the injections in the wrong order.

Here's my app.js :

angular.module("datapoint", ['ngSanitize', 'ngCsv', 'chart.js', 'angular-chart.js']);

Here's my canvas tag in the HTML :

<canvas id="pie" width="300" height="300" class="chart-canvas chart chart-pie" chart-data="getPieChartData" chart-labels="getPieChartLabels" chart-options="options"></canvas>

Here's the beginning of my controller, datapointController.js :

var datapoint = angular.module('datapoint', ['ngCookies', 'ngCsv', 'chart.js']);
datapoint.controller('datapointController', 'PieCtrl', ['$scope', 'datapointFactory', '$cookies', function ($scope, datapointFactory, $cookies) {

And for good measure, here's how I call all the scripts in my HTML :

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular-cookies.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular-sanitize.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ng-csv/0.3.6/ng-csv.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.2.2/Chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/angular.chartjs/latest/angular-chart.min.js"></script>
<script src="app.js"></script>

Despite following the directions on the angular-chart.js site, I still get this error:

Error: ng:areq Bad Argument

Argument 'datapointController' is not a function, got string

Running into this before, I figured it was the placement of PieCtrl , but moving that around in different spots just creates different errors.

Adding 'angular-chart.js' to the module in datapointController.js just makes the entire page go blank and creates the error:

Error: $injector:modulerr Module Error

Failed to instantiate module datapoint due to: Error: [$injector:modulerr] http://errors.angularjs.org/1.5.8/$injector/modulerr?p0=a...)

And another error I've run into in my fiddling is:

Error: $injector:unpr Unknown Provider

Unknown provider: PieCtrlProvider <- PieCtrl <- datapointController

And I wasn't sure if PieCtrlProvider was another argument that I had to provide. In any event, I seem to be following the examples on angular-chart.js, only with extra added dependencies for other things on my site.

Thanks for any help with this.

Answer 1

1. If your 'PieCtrl' is another controller, then you need to use $controller dependency to inject one controller to another as follows:
   app.controller('Ctrl2', ['$scope', '$controller', function($scope, $controller){ $controller('Ctrl1', {$scope: $scope}) //Ctrl1 scope will be available here }])
2. use only chart.js in your angular module dependencies

Answer 2

Turns out, similar to what Raghavendra was suggesting, you need to declare a separate controller for PieCtrl . While $controller('Ctrl1', {$scope: $scope}) didn't work for me, creating a completely separate controller (in my case, within the same file) worked.

Example:

datapoint.controller('datapointController', ['$scope', 'datapointFactory', '$cookies', '$route', '$routeParams', '$location', function ($scope, datapointFactory, $cookies, $route, $routeParams, $location) {

    //this controller's code

}]);

    //in same file

datapoint.controller("PieCtrl", ['$scope', '$rootScope', 'datapointFactory', function ($scope, $rootScope, datapointFactory) {

    //code related to the angular chart

}]);

Hope this helps out anyone else having this issue!