topic Re: Form submission get blocked because the frame is sandboxed & the 'allow-forms' permission is in Developer

Form submission get blocked because the frame is sandboxed & the 'allow-forms' permission is not set

Anonymous — Tue, 24 Oct 2023 13:04:30 GMT

Hello All,
I develope web application using python & Fask having form submission in it which connects to sql server database. Then used that application URL in iframe as source in column of power bi table shared image below and publish that report on service.

I used HTML Viewer visual to open that web application and it opens that web application but when I try to submit form, I get error - "Blocked form submission to '/add_destplat' because the form's frame is sandboxed and the 'allow-forms' permission is not set. "

But as you can see in first image I already provided sandboxed attributes "allow-script allow-forms". How I can submit the form in IFrame?Any help will be great.
Thanks in Advance!!

Re: Form submission get blocked because the frame is sandboxed & the 'allow-forms' permission is

Anonymous — Wed, 28 Aug 2024 00:18:23 GMT

Hello Pratima,

Were you able to resolve this error ? Any help would be appreciated.

Thanks

Jude

Re: Form submission get blocked because the frame is sandboxed & the 'allow-forms' permission is

dm-p — Wed, 28 Aug 2024 00:35:12 GMT

You can't submit forms using a custom visual. A custom visual is hosted in a sandboxed iframe with allow-scripts as the only permission. MS governs this rather than the custom visual author.

If you add an iframe inside a custom visual with your specific permissions, you are asking for a higher privilege than MS has given to the custom visual, and your browser blocks this.

This might be possible by using a PowerApp, but a custom visual (including developing your own from scratch) is not a viable solution for this use case.

Regards,

Daniel