topic Re: Automatically cycle through a field on the front-end in QlikView

Automatically cycle through a field on the front-end

hmjason7 — Fri, 13 Mar 2015 10:06:22 GMT

Hi All,

Is there a way of cycling through all the values for a given field?

For example, say we have a EmployeeName field with Values "Jack, John,Jake". We want the dashboard to "automatically" cycle through each value in the given field every 15 seconds (or whatever length of time we want).

So it would be like having a person click on "Jack" from a listbox, then after 15 seconds clicking on John, then Jake, and then back to Jack.

I don't think this can be done natively, so macros first come to mind. But I wanted to ask if there was a way of doing it without the use of macros.

Cheers,

Jason

Re: Automatically cycle through a field on the front-end

luciancotea — Fri, 13 Mar 2015 10:19:39 GMT

Yes, it is possible.

1. Add a variable that has =now() as expression

2. Add a trigger on OnChange event of the variable (Documant Properties -> Triggers -> Variables) that will select a value based on an expression

3. Add a textbox to display the variable value in order to force QlikView to refresh it

See attachment

Re: Automatically cycle through a field on the front-end

hmjason7 — Fri, 13 Mar 2015 10:30:41 GMT

Hi Lucian,

That looks good. I noticed in the trigger you're doing the cycle in an if statement, specifically stating the values you want to loop over.

Is there a way of doing this without having to state the values you wish to cycle over?

Re: Automatically cycle through a field on the front-end

Anonymous — Fri, 13 Mar 2015 10:47:09 GMT

Do beware that on the Accesspoint using Now() like this only works properly with the IE Plugin and not in AJAX mode.

Re: Automatically cycle through a field on the front-end

luciancotea — Fri, 13 Mar 2015 10:48:51 GMT

Use getfieldselections() to get the current selected value. Based on this, build an expression that will determine the next value.

Or, you can use macro.: http://community.qlik.com/thread/10565