topic Re: Session App Tutorial - Connection Lost in Integration, Extension & APIs

Session App Tutorial - Connection Lost

AG-gugelbisolutions — Thu, 14 Apr 2022 17:35:21 GMT

Hi there, I'm trying to follow the official tutorial Tutorial: Creating a session app , but I'm getting a Connection Lost error at some point after hitting the Create Session App button.

Mashup is hosted by Qlik Sense itself and I'm reaching it through a URL like https://localhost/extension/[...]

Any ideas?

Re: Session App Tutorial - Connection Lost

AG-gugelbisolutions — Tue, 26 Apr 2022 10:17:27 GMT

No-one has ever experienced this issue?

Re: Session App Tutorial - Connection Lost

AG-gugelbisolutions — Wed, 04 May 2022 17:47:50 GMT

Let me reformulate. The problem (at least the first) seems to be finding enigma. Please note that I'm trying to run this tutorial as an extension.

I have installed enigma.js and ws packages with the following command, run with administrator privileges.

npm i -S enigma.js ws

This creates the relevant folders under C:\Windows\system32.

However, even if I try to require enigma with

const enigma = require("enigma.js");

I get the following error

Uncaught Error: Module name "enigma.js" has not been loaded yet for context: _. Use require([])

The same happens if I use the absolute path.

If I instead use

const enigma = require('enigma.js');

I get the this error

Uncaught Error: Module name "enigma.js" has not been loaded yet for context: _. Use require([])

How can enigma code be run on the browser?

Re: Session App Tutorial - Connection Lost

hakana — Thu, 05 May 2022 05:35:39 GMT

From what I can see, the tutorial you are linking isn't using engima.js.
It's using the require( ["js/qlik"],... that will do the communication with engine

What's the goal here? Just learning?
You could try the tutorials at https://qlik.dev/tutorials/build-a-simple-mashup-using-capability-apis

Re: Session App Tutorial - Connection Lost

AG-gugelbisolutions — Thu, 05 May 2022 08:37:30 GMT

Yes, the tutorial does not use enigma, but it works only on Qlik Sense Desktop. If I try to run it on QSEoW a "Connection Lost" error pops up and my intention was to solve it making use of enigma.

At the moment the goal is to learn, but I will need a much more solid knowledge, especially of session apps, in three or four months.

I will try to follow the Capability APIs tutorial as well.

Thanks.

Re: Session App Tutorial - Connection Lost

rzenere_avvale — Thu, 05 May 2022 09:25:29 GMT

Hey there @AG-gugelbisolutions,

Have you tried taking a look at these resources?

enigma.js overview on QSEfW's help page: enigma.js
complete example of how to create a session app using enigma.js: car-models

I hope this helps,
Riccardo

Re: Session App Tutorial - Connection Lost

AG-gugelbisolutions — Thu, 05 May 2022 09:46:09 GMT

The "Connection Lost" problem stopped me as I was trying to follow all possible example to gain as much as experience possible.

At the moment I'm following this Capability API tutorial and is working fine. I feel like the right learning path starts from Capability/Root APIs and the enigma.

At the beginning I was pretty optimistic about enigma, but the only good result was a series of scripts to use as backend scripts; never been able to make it work on the browser.

Thanks

Re: Session App Tutorial - Connection Lost

AG-gugelbisolutions — Thu, 05 May 2022 16:39:39 GMT

Just a quick update: I'm working without enigma at the moment, but I'm stuck on rendering objects within a session app (see this other post).