Error message: Variable in template cannot be replaced by Directive

Whenever I attempt to include parameters in a directive that contains another directive, I encounter an error message displaying This particular error

Below is the structure of my directive:

app.directive('percentageSquare', function(){
    return {
        restrict: 'E',
        scope: {
            color: '@',
            chartConfig: '@'
        },
        templateUrl: '/templates/dashboard/charts/PercentageChart.html'
    };
});

This directive loads the following template:

<div class="drop-shadow">
    <highchart id="{{chartConfig}}" config="{{chartConfig}}" style="background-color: {{color}};" ng-show="true"></highchart>
</div>

The directive is called with these attributes:

<percentage-square color="yellow" chart-config="chartBounceRate"></percentage-square>

I am uncertain about how to resolve this issue, as everything seems correct from my perspective...

Answer №1

Understanding the functionality of highcharts involves configuring an object from scope, requiring the use of two-way binding.

Utilizing Directives

scope: {
   color: '@',
   chartConfig: '=', //<--implementing two-way binding
   selector: '@'
},

Implementing Directives

<percentage-square color="'yellow'" chart-config="chartBounceRate" selector="{{selector}}"></percentage-square>

Template Structure

<div class="drop-shadow">
    <highchart id="{{selector}}" config="chartConfig" 
       ng-style="{background-color: color}" ng-show="true">
    </highchart>
</div>

UPDATE

Refer to this renowned stackoverflow thread for insights on understanding the meanings of @, &, and = in angularjs directive definitions

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