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How to load external libraries and add them to dom following best practice?

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Posted on by Community Power Pla...

Hello everyone

We're using the google places api for an address autocomplete pcf control. My current issue is that when I open the form from an overview the onload function of the script is not getting called and if then only in rare cases. If I reload the form the onload function is hit everytime.

private appendGoogleApiUrlToDom(context: ComponentFramework.Context<IInputs>) {
 if (!document.getElementById('googleapi')) {
 let googleApiKey = context.parameters.googleapikey.raw;
 let scriptUrl = "https://maps.googleapis.com/maps/api/js?libraries=places&language=en&key=" + googleApiKey;

 let scriptNode = document.createElement("script");
 scriptNode.id = "googleapi";
 scriptNode.defer = true;
 scriptNode.setAttribute("type", "text/javascript");
 scriptNode.setAttribute("src", scriptUrl);
 scriptNode.onload = () => {
 debugger
 googleApiLoaded = true;
 context.factory.requestRender();
 }
 document.head.appendChild(scriptNode);
 }
 }

Is there another possibility to load external javascript libraries like the google api? With the onload function I could workaround the issue of google not being defined but later on the control depends on the googleApiLoaded variable which doesn't get set despite google being available.

Thanks!

Categories:

Power Apps component framework

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Diana Birkelbach 3,072 Most Valuable Professional on at

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Re: How to load external libraries and add them to dom following best practice?

Hi @Anonymous ,

I've seen an example in the PCF docs: the Map component: https://docs.microsoft.com/en-us/powerapps/developer/component-framework/sample-controls/map-control?WT.mc_id=BA-MVP-5004107

Basically it uses an Iframe.
Didn't tried this out nether...but maybe it still helps...

Kind regards,

Diana
Community Power Pla... on at

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Re: How to load external libraries and add them to dom following best practice?

Hi @DianaBirkelbach , thanks for your response. These are third party npm packages which do the script loading dynamically. If these packages don't exist at all how would you load hosted scripts?
Diana Birkelbach 3,072 Most Valuable Professional on at

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Re: How to load external libraries and add them to dom following best practice?

Hi @Anonymous ,

Usually you don't inject script tags in PCF, but import the scripts and use them inside index.ts.

Maybe using something like googleapis npm package (I didn't tried it out): https://www.npmjs.com/package/googleapis

I remember about another thread regarding the google maps. Maybe it helps, since the problem seems to be similar: https://powerusers.microsoft.com/t5/Power-Apps-Pro-Dev-ISV/pcf-1022-Error-Control-source-code-declares-an-internal-module/m-p/458946

Hope it helps!

Kind regards,

Diana
Community Power Pla... on at

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Re: How to load external libraries and add them to dom following best practice?

@HemantG Please delete. I relied on a variable from init function which doesn't get populated everytime as context parameters are still null especially not populated when opening a record from an overview. It has nothing to do with loading external libraries.