Braintree Drop-in container in Ionic - ionic-framework

Question

I'm trying to integrate a Braintree Payments drop-in into an Ionic mobile app. Based on the Braintree documentation and some code examples i was able to find online, the following code is what I've managed to come up with so far but it doesn't seem to work:
controller.js
.controller('CheckoutForm', function($scope, $window) {
$scope.clientToken = "<token generated by the server>"
$scope.renderCheckout = function() {
braintree.setup($scope.clientToken, "dropin", {
container: "payment-form"
});
}
})
template.html
<div>
Payment details:
<form id="checkout">
<div id="payment-form" onLoad="renderCheckout()"></div>
</form>
</div>
I also included the following line in the index.html:
<script src="https://js.braintreegateway.com/js/braintree-2.23.0.min.js"></script>
I'm quite new to Ionic and HTML5/JS development in general so any help would be much appreciated.

Answer 1

Forget about the onload function. Just do this in your controller.
var clientToken = "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";
// Client token above is just for testing and provided by Braintree for testing purposes
braintree.setup(clientToken, "dropin", {
container: "payment-form"
});
Then in your html:
<form id="checkout">
<div id="payment-form"></div>
</form>
For mobile remember to add proper Content security policy and whitelists with the cordova-whitelist-plugin.
Documentation for CSP: https://developers.braintreepayments.com/reference/client-reference/javascript/v2/best-practices#using-braintree.js-with-a-content-security-policy
Documentation for Cordova whitelist plugin:
https://cordova.apache.org/docs/en/latest/guide/appdev/whitelist/index.html

Answer 2

What 'thepio' suggested is for testing only. But proper way might be to generate the Client Token on you server. Then your Ionic app will POST and get the Client Token from your server. And then once payment nonce is generated, you can POST your payment data to your server to process the payment.
Check this sample implementation.
https://github.com/demianborba/braintree-cordova-angular-node