Unable to call a function in a HTML webresource

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Posted on by westerdaled

636

I want to pass formcontext to a html WebEesource, so that it can update a few fields in a model driven form.

Unfortunately in my TypeScript, it is none too happy with .getContentWindow() as in it is not available. So am I missing a type or need to do a magic cast.?

Also this snippet won't know about the JavaScript functions in the Html WebResource so that is also an issue to solve🤔.

function onFormLoad(executionContext : Xrm.Events.EventContext)
{
 
 const formContext = executionContext.getFormContext();
 const webResourceName = "myproj_lookup.html"; 

 let webResourceControl = formContext.getControl<(webResourceName);
 
 // add a bit fo debugging code 
 let globalContext = Xrm.Utility.getGlobalContext();
 let webResourceUrl = globalContext.getWebResourceUrl(webResourceName);
 if (webResourceUrl)
 {
 // this shows the actual url
 console.log("Web Resource Url: " + webResourceUrl);
 
 } 
 
 if (webResourceControl) {
 webResourceControl.getContentWindow().then(
 function(contentWindow) {
 // Call your function to pass Xrm and formContext
 contentWindow.setClientApiContext(Xrm, formContext);
 
 });
 }
 else
 {
 // this what I am seeing :-(
 console.log("Web Resource not found") 
 }
 

 }

Categories:

Microsoft Dataverse with Power Apps

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a33ik 3,306 Most Valuable Professional on at

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Hello,

Try to get your control using the code similar to the following:

let webResourceControl = formContext.getControl<Xrm.Controls.FramedControl>(webResourceName);

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westerdaled 636 on at

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Hi @a33ik

Thanks for replying. Yes, that gets me getContentWIndow()

with

contentWindow.setClientApiContext(Xrm, formContext);

Do I need to add a myhtmlWidgetHelper.js to the form load event and include the reference to this file in the widget.html . I think one of my colleagues might have done this already ( he is a bit wiley 🥹) ,as he seems to have got the html widget to reference the parent form and so update the form fields. I haven't had a chance to push the latest changes in our repo. I do see other uses, if we can figure out how I can interact with the html web resources, in both directions.

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a33ik 3,306 Most Valuable Professional on at

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The following post shows on how you can organize communication from embedded html to parent form through context - https://carldesouza.com/how-to-use-formcontext-in-a-web-resource-in-dynamics-365-power-apps/

If you want to organize communication from form script to HTML there will be a different way of doing it - https://dreamingincrm.com/2015/11/23/using-window-postmessage-to-interact-with-iframe-in-crm-form/

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