Hi, I'm quite new to LimeSurvey, but it seems to be the right choice.
The only thing I can't get to work is adding sub-answers to some answer options.

In one particular case I'm using the question type "List (Radio)" with 4 possible answers:
A, B, C and D

What I want to achieve now:
If someone selects A as answer, there should be 3 other sub-answers as choice.
To make it more visual:

- A
-- A1
-- A2
-- A3
- B
- C
- D

Best case scenario would be, that A1-A3 only shows, after A is beeing selected.
In fact, A by itself has no value, only the child-elements do.
So if one picks A, selecting a child of A is mandatory.

Don't know how to achieve that, couldn't find anything...


I'm using LS Version 2.65.4+170612 right now.

Thanks a lot!

Hi David,

it's impossible by design if you consider that a radio question type can only receive a unique answer... so you should use at least a multiple choice questions (checkboxes)... + some javascript code to show/hide some answer options.

Probably a better design is to use several (conditionally shown) radio button questions + some css trick to simulate a unique question

Hello David,

I think this is only possible with a workaround.
You may hide subquestions via relevance and a.e. script them a little different behaviour.
The "sub-"subquestions may use some html code, so you can style them different to the subquestions, while they'll be virtually no difference for the backend.
The mandatory subchoice though is a little tricky.
As Ben_V already said LS currently has no possible way of achieving this, but in LS3 it will be possible to create such a question type.

I've appended a sample survey you may import you could achieve a similar behaviour with an array question type and only expression manager and html.

Hi Markus, I think an issue with your approach is the possibility to uncheck a choice... Needs some reset button, right?

Thank you for the example provided...but it's not working as expected...there is no return possible (uncheck).
In addition the other answers disappear...I think this won't provide a good user experience.

Maybe I was searching the wrong way...maybe it can be achieved by simple JS/CSS.
So instead of having a conditional logic like I mentioned before,
maybe it's simpler to do it like this (all on same level):

- A
- A1 (hidden)
- A2 (hidden)
- A3 (hidden)
- B
- C
- D

If someone chooses A, I need to use a trigger and set A1-A3 on show(), toggle(), display:block, whatever...

Any ideas about this approach...?

Thanks! But if I use checkboxes I need to do a lot more workaround, right?
Because I want only 1 answer, not multiple.

Still fishing in the dark here...

I think you will need to create your own workaround if you really want to do this exactly as described. There is no such functionality and any workaround idea that comes to mind has some kind of flaw.

I would probably go with the second question. OK, it means an additional question, but it is fairly simple and straight forward and you can create it out of the box.

My solution was just a proof of concept to point you in the right direction.
you may remove the relevance settings for A,B,C and D.
Also the reset button should not be that hard, or maybe add a second column with "N" No as the value.
That way you would be able to choose.
Also you could use checkboxes and limit the maximum answers to two.
That way one could only check two answers.

If all this is not what you where looking for, I suppose holch's answer is the best so far.
Just create the subquestions a s separate questions, only visible if you chose something from the main question.

Hi,

I was also looking for a solution.
Is this the solution in the new version?

Because I was looking for a way of doing a sub-answer and saw this by accident.
bugs.limesurvey.org/file_download.php?file_id=13178&type=bug

But I don't know where the option/button so I'll be able to see the "+" sign at the right side of the answer.
From this place I found the link (1072) that led me to the page with the option to add a sub-answer.
bugs.limesurvey.org/file_download.php?file_id=13177&type=bug

Also saw this code but don't know how it got there to one of the answers.
bugs.limesurvey.org/file_download.php?file_id=13179&type=bug

Is there a way I can find the place with the "+" sign or is it a bug or a missing link?

LS 4.2.1