Mashup and Custom Extension

[shivanandk]

Hi All,

I am looking for step by step instruction on configuring custom extension and using them in Mashup using Visual Studio.

I have installed the custom extension sense-UI field on the Qlik Sense server, and able to use in the hub in the app.

When I try to use the customer extension in MVC project in Visual Studio(steps as per Qlik help website), I see the following display of Invalid visualization. I researched in community and  Qlik help but could not find any good answer for the issue.

I would appreciate any help on the step.

Thank you in advance,

SK

[s29124141]

This is an issue with CORS enabled browsers.

Issue :- CORS is not enabled on custom extensions, hence Preflight request from javascript (HTTP OPTIONS to https://hostname/qrs/extension/schema?xrfkey=xrfkey) does not return "Access-Control-Allow-Origin" response header. So the access to custom extensions is blocked.

Proof Below :-

Added response header "Access-Control-Allow-Origin = * " to the preflight request and below is the custom extension rendered without any issue.

Support ticket to Qlik to enable CORS, or allow access to the request origin may solve the issue.

Without "Access-Control-Allow-Origin" response header, custom extension will not be shown.

[oknotsen]

Please add the images to your post or host them in a location that is not forbidden to open.

Thank you,

Qlik Community Team

[s29124141]

shivanandk‌ We can add additional response headers to Virtual Proxy using below advanced settings.

Please mark this reply as "Correct"/"Helpful" if this resolves your issue.

[shivanandk]

Thanks Praveena. It worked ! Appreciate your help

[Anonymous]

Hi Praveena,

Where can I find the virtual proxy settings?

Thank you,

André Silva

[s29124141]

Hi andresilva‌ , you should be able to see that in Qlik management console -> Virtual Proxies -> Select your virtual proxy -> Edit

[ernstblaauw]

Currently, I am developing on Qlik Sense Desktop (April 2019). So, I have no Management Console. Do you know how I can enable this feature?