What is the best way to embed a variable within a Directive HTML block for seamless access by the Controller?

I am facing a challenge with my custom directive that inserts an HTML block onto the page. The issue is to have a variable within this block that can be manipulated based on an ng-click function in my controller.

This is what my directive looks like:

.directive('sendModal', function () {
    return {
        restrict: 'E',
        template: '<div ng-click="switchCurrency()">'+currency+'</div>'
    };
});

The function in the Controller (using $parent as the modal exists on the parent level):

vm.$parent.switchCurrency = function() {
    console.log('clicked switchCurrency');
    if (currency === 'USD') {
        currency = 'BTC';
    } else {
        currency === 'USD';
    }
};

The error I encounter is: ReferenceError: currency is not defined

I need assistance in figuring out how to declare a variable named currency inside my directive HTML and make it accessible from the Controller.

Answer №1

{{finance}} compared to '+finance+'

The functionality of this code is impressive; upon compilation, it transforms into a variable.

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