Your LimeSurvey version: 5.6.14+230403
Own server or LimeSurvey hosting: Own server
Survey theme/template: fruity
==================

I have a mandatory multiple numerical input question with slider (see lss attached). I'm not sure what I'm doing wrong here but even when the mandatory option is ON, you can go NEXT without even moving one of the sliders. I understand that question validation might be hard in this case since 0 might be a valid choice. I thought that one trick would be to set the sliders to an initial value that is very unlikely by chance (for instance "0.12" while the slider accuracy is 0.01 on a scale of 0 to 100) and then enforcing a sub-question validation using the following: (this != 0.12). This trick did not work either as it seems not possible to set the initial value to non-integer value.

Any help would be appreciated, thanks!

Well, that's obvious.

Your settings are:
Initial value: 0.1
Slider initial value set at start: ON

So the question is answered right at the beginning as each slider has a value (0.1)
Set
Slider initial value set at start: OFF

Great thanks! Should have seen this myself.

nicolasdr wrote:

Your LimeSurvey version: 5.6.14+230403
Own server or LimeSurvey hosting: Own server
Survey theme/template: fruity
==================

This trick did not work either as it seems not possible to set the initial value to non-integer value.
 

If you confirm this : it's an issue. It must be reported : community.limesurvey.org/bug-tracker/

Else with Joffm solution, you can set at 0 and set it as mandatory. To have 0 : participant must clic on slider
 

Thanks again for your advice. Before reporting the issue, I have a few questions/comments:

- I've set the value to 3.99 with a slider accuracy of 0.01 and I can confirm that the value displayed in the DOM was 3 (I've checked the input tag, class="form-control answer-item numeric-item hidden" within the slider div). This seems to confirm that initial values could not be set to non-integer.

I also want to make sure the other problem I had is not worth reporting:
- Why would enabling "Slider initial value set at start" change the effect of "mandatory"? If this is the intended behavior, I'm not sure that the documentation conveys this clearly (at least I don't see this info in the "Mandatory" or "Slider initial value (slider_initial_value)" sections).

Please let me know what you think.

About "Slider initial value set at start" : it mean the value is SET, then the response is SET too.

I don't see other way to write.

Aboit the issue : seems really an issue, a simple lss with only this question is great !

Unfortunately, I'm unable to log into the bug tracker site (error message: Your account may be disabled or blocked or the username/password you entered is incorrect) but I can log into limesurvey.org. I've tried creating a new account and it did not work either.

Below is the bug report I would have filed along with the lss and screenshot in case you want to report it yourself.

---

Your LimeSurvey version: 5.6.14+230403
Own server or LimeSurvey hosting: Own server
Survey theme/template: fruity
Mac OS 13.2.1
Firefox, Chrome
==================

1. Unable to set non-integer values (e.g. 3.99) for initial slider value when slider accuracy is not an integer (e.g. 0.01).
2. I've attached a lss file demonstrating the issue.
3. How to reproduce: Set the initial slider value to 3.99; the slider accuracy to 0.01; and enable "Slider initial value set at start". The displayed slider value is 3 and the value in the input tag (class="form-control answer-item numeric-item hidden" within the slider div) is 3.
4. A screenshot is attached.

---

bugs.limesurvey.org/view.php?id=18756

Thanks, DenisChenu!

the commit github.com/LimeSurvey/LimeSurvey/pull/3057

You can apply the fic to test it;
 

The fix worked for me (see screen capture).

Encore merci!