Could it be that the AmCharts Drillup feature is not fully integrated with AngularJS?

Question

Could it be that the AmCharts Drillup feature is not fully integrated with AngularJS?

UPDATE:

Check out this Plunker I created to better showcase the issue.

There seems to be an issue with the Back link label in the chart not functioning as expected.

I'm currently facing a challenge with the AmCharts Drillup function, which should allow users to navigate back to previously displayed chart content. While I've managed to get the Drilldown function working correctly, I'm struggling with getting the Drillup functionality to work in AngularJS.

Error in Console:

https://i.stack.imgur.com/E7Mlp.png

Origin of the Error:

.........................
// add back link
// let's add a label to go back to yearly data
event.chart.addLabel(
  70, 10, 
  "< Go back",
  undefined, 
  13, 
  undefined, 
  undefined, 
  undefined, 
  true, 
  'javascript:mostSoldDrillUp();');  <------- THIS IS THE LINK LABEL FOR DRILLUP
.................................

 function mostReferralsDrillUp() {
 ...........
 ...........
 }

Methods I have attempted:

I tried placing the AmChart JavaScript code inside a directive's link function, but encountered the error: Uncaught ReferenceError: mostSoldDrillUp is not defined at
:1:1 in the browser console.
I also attempted to place it within a controller, resulting in the same error.
Simply including the JavaScript file and defining the chart's id in a div within the HTML using ui-router yielded the same error.
```
.state('home', {
        url: '/',
        templateUrl: './pages/home.html',
        controller: 'HomeCtrl'
    })
```

Finally, I omitted the controller from my route definition:

.state('home', {
        url: '/',
        templateUrl: './pages/home.html',
        // controller: 'HomeCtrl'
    })

While this approach worked, I require a controller for other functionalities, rendering this method obsolete.

If anyone has encountered a similar issue or has a potential solution, your input would be greatly appreciated. Thank you.

javascript angularjs amcharts

Answer 1

Answer №1

AmCharts does not have knowledge of Angular's $scope, and when the label link is clicked, it executes resetChart in the global window scope instead of your controller's scope. There are a few ways to address this issue.

1) Define resetChart in the global/window scope to maintain the label within the chart. While not recommended if you want to adhere to Angular's best practices, it can still work.

//inside controller
window.resetChart = function() {
  chart.dataProvider = chartData;
  chart.titles[0].text = 'Yearly data';

  // Remove the "Go back" label
  chart.allLabels = [];

  chart.validateData();
  chart.animateAgain();
}

2) Attach the resetChart method to your controller's scope and use an external element to handle the chart reset, rather than relying on the chart label. This may not be as visually appealing, but it is cleaner than manipulating window.

home.html

<h1>HOME STATE</h1>
<button ng-show="isDrillDown" ng-click="resetChart()">Go back to yearly</button>
<div id="chartdiv"></div>

excerpt of script.js

chart.addListener("clickGraphItem", function(event) {
  if ('object' === typeof event.item.dataContext.months) {

    // Set the monthly data for the clicked month
    event.chart.dataProvider = event.item.dataContext.months;

    // Update the chart title
    event.chart.titles[0].text = event.item.dataContext.category + ' monthly data';

    // Validate the new data and animate the chart again
    event.chart.validateData();
    event.chart.animateAgain();
    $scope.isDrillDown = true;
  }
});

// Function to reset the chart back to yearly data
$scope.resetChart = function() {
  chart.dataProvider = chartData;
  chart.titles[0].text = 'Yearly data';

  // Remove the "Go back" label
  chart.allLabels = [];

  chart.validateData();
  chart.animateAgain();
  $scope.isDrillDown = false;
}

Make adjustments as necessary.

For a demonstration of the second method, see the updated plunker here.

Answer 2

AmCharts does not have knowledge of Angular's $scope, and when the label link is clicked, it executes resetChart in the global window scope instead of your controller's scope. There are a few ways to address this issue.

1) Define resetChart in the global/window scope to maintain the label within the chart. While not recommended if you want to adhere to Angular's best practices, it can still work.

//inside controller
window.resetChart = function() {
  chart.dataProvider = chartData;
  chart.titles[0].text = 'Yearly data';

  // Remove the "Go back" label
  chart.allLabels = [];

  chart.validateData();
  chart.animateAgain();
}

2) Attach the resetChart method to your controller's scope and use an external element to handle the chart reset, rather than relying on the chart label. This may not be as visually appealing, but it is cleaner than manipulating window.

home.html

<h1>HOME STATE</h1>
<button ng-show="isDrillDown" ng-click="resetChart()">Go back to yearly</button>
<div id="chartdiv"></div>

excerpt of script.js

chart.addListener("clickGraphItem", function(event) {
  if ('object' === typeof event.item.dataContext.months) {

    // Set the monthly data for the clicked month
    event.chart.dataProvider = event.item.dataContext.months;

    // Update the chart title
    event.chart.titles[0].text = event.item.dataContext.category + ' monthly data';

    // Validate the new data and animate the chart again
    event.chart.validateData();
    event.chart.animateAgain();
    $scope.isDrillDown = true;
  }
});

// Function to reset the chart back to yearly data
$scope.resetChart = function() {
  chart.dataProvider = chartData;
  chart.titles[0].text = 'Yearly data';

  // Remove the "Go back" label
  chart.allLabels = [];

  chart.validateData();
  chart.animateAgain();
  $scope.isDrillDown = false;
}

Make adjustments as necessary.

For a demonstration of the second method, see the updated plunker here.

Could it be that the AmCharts Drillup feature is not fully integrated with AngularJS?

Answer №1

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