topic Catching Mashup Events in Integration, Extension & APIs

Catching Mashup Events

d_pranskus — Tue, 10 Mar 2015 11:38:25 GMT

I created a QlikSense mashup using API & JS. WHat I want is to catch an event when user selects something or clears selections and then store active selections in session.

Could somebody point me to right direction how to catch that event. I suppose it is some JS code. Thanks

Re: Catching Mashup Events

Stefan_Walther — Thu, 12 Mar 2015 18:09:00 GMT

Hi d.pranskus,

thx for asking. Unfortunately we haven't exposed events in general publicly nor documented it. But I definitely acknowledge, that this is something we should look into ...

So cannot promise anything, but ... 😉

Regards

Stefan

Re: Catching Mashup Events

ErikWetterberg — Mon, 16 Mar 2015 09:50:35 GMT

Hi Darius,

You can use app.getList('SelectionObject', callback).

Documentation is here:

https://help.qlik.com/en-US/sense-developer/2.2/Subsystems/APIs/Content/MashupAPI/Methods/getList-method.htm

Your callback function will be called whenever selections change. A small example:

function FieldList(app) {
   var me = this;
  app.getList("FieldList", function(reply) {
   me.fields = reply.qFieldList.qItems;
   me.render();
  });
  app.getList('SelectionObject', function(reply) {
  $("[data-qcmd='back']").parent().toggleClass('disabled', reply.qSelectionObject.qBackCount < 1);
  $("[data-qcmd='forward']").parent().toggleClass('disabled', reply.qSelectionObject.qForwardCount < 1);
   me.selections = reply.qSelectionObject.qSelections;
   me.render();
  });
}

FieldList.prototype.render = function() {
   var $fields = $("#fields"), str = "<ul class='list-group'>", added = {}, me = this;
   if(this.selections) {
   this.selections.forEach(function(fld) {
   str += '<li class="list-group-item" data-value="' + fld.qField + '">' + fld.qField + '<span class="badge">' + fld.qSelectedCount + '/' + fld.qTotal + '</span></li>';
   added[fld.qField] = true;
  });
  }
   if(this.fields) {
   this.fields.forEach(function(fld) {
   if(!added[fld.qName]) {
   str += '<li class="list-group-item" data-value="' + fld.qName + '">' + fld.qName + '</li>';
  }
  });
  }
   str += "</ul>";
   $fields.html(str);
}

Re: Catching Mashup Events

Fri, 29 Apr 2016 08:59:12 GMT

Hi Erik,

I'm trying here something similar in a mashup. When I try your code and make some selection I get an error from engine that says: "15: Operation aborted".

Documentation is no longer on the link you provided. Any idea what could be going on?

Thank you!

Re: Catching Mashup Events

Francis_Kabinoff — Fri, 29 Apr 2016 17:19:50 GMT

Hey Sergio,

Error code 15 is associated with an operation being aborted, and, in my experience, is usually associated with either making or clearing selections while the engine is still performing another task which the engine has to run again when selections change. It has never actually negatively effected my app, and as long as you are not experiencing any unexpected behavior from it, which I'm assuming you're not, it's probably safe to ignore.

Re: Catching Mashup Events

ErikWetterberg — Mon, 02 May 2016 07:17:18 GMT

Hi Sergio,

The 'Operation aborted' happens when the user makes (or clears) a selection at the same time we are trying to fetch data. The client code should try again and get new data that reflects the new selection state. So this error is normal, I don't really know why we print it in the console, we probably shouldn't.

I have updated the link, it should work now.

Erik