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Display number of rows in array question based on previous numerical input

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11 years 6 months ago - 11 years 6 months ago #95371 by ricardo01
Display number of rows in array question based on previous numerical input was created by ricardo01
I'd like to create an array question that only displays certain number of rows based on a response to a previous numerical input.

In this example, if a person says that she teaches 2 courses (#1), question 2 should display only 2 rows (#2)






is it possible to do this?

Thanks
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Last edit: 11 years 6 months ago by ricardo01. Reason: wrong pic
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11 years 6 months ago #95385 by tpartner
Replied by tpartner on topic Display number of rows in array question based on previous numerical input
If both questions are on the same page as your image indicates, add this to the source of the numeric question.
Code:
<script type="text/javascript" charset="utf-8">
  $(document).ready(function(){
 
    // Identify the questions
    var q1ID = '{QID}';
    var q1 = $('#question'+q1ID+'');
    var q2 = $(q1).nextAll('.array-multi-flexi-text:eq(0)'); 
    var q2ID = $(q2).attr('id').split('question')[1];
 
    // Initial row handling
    handleRows($('input[type="text"]', q1));
 
    // Listener on the numeric input
    $('input[type="text"]', q1).change(function(){
      var maxRows = $('tr:[id^="javatbd"]', q2).length;
      if($(this).val() > maxRows) {
        alert('You can only display a maximum of '+maxRows+' rows!');
        $(this).val('');
      }
      else {
        handleRows(this);
      }
    });
 
    function handleRows(el) {
      var numRows = $(el).val();
      $('tr:[id^="javatbd"]', q2).hide();
      $('tr:[id^="javatbd"]', q2).each(function(i){
        if(i >= numRows) {
          $('input[type="text"], select', this).val('');
        }
        else {
          $(this).show();
        }
      })
    }
  });
</script>

Here's a sample survey:

File Attachment:

File Name: limesurvey...4-28.lss
File Size:19 KB
Cheers,
Tony Partner
Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
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11 years 6 months ago #95387 by ricardo01
Replied by ricardo01 on topic Display number of rows in array question based on previous numerical input
As always, Thank you very much, Tony.

ricardo
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11 years 6 months ago #95391 by tpartner
Replied by tpartner on topic Display number of rows in array question based on previous numerical input
You're welcome :). Enjoy your Sunday.
Cheers,
Tony Partner
Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
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11 years 6 months ago #95763 by ricardo01
Replied by ricardo01 on topic Display number of rows in array question based on previous numerical input
Hi Tony,

There small glitch in this workaround

The rows don't display as soon as the number is entered...they only show up after clicking somewhere else...is there a way to make the rows appear as soon as the number is entered.




this is a link to the question broaderimpacts.org/surveys/limesurvey/index.php/289571/lang-en

rg
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11 years 6 months ago #95776 by tpartner
Replied by tpartner on topic Display number of rows in array question based on previous numerical input
That is not a "glitch", it is by design.

The handleRows() function is not fired until the respondent is finished inputting their value (the input is de-focussed) to avoid "bouncing" if you have more than 9 rows. (if someone enters 12, it would first show 2 rows and then 12)

If have less than 10 rows, change this:
Code:
$('input[type="text"]', q1).change(function(){

To this:
Code:
$('input[type="text"]', q1).mouseup(function(){
Cheers,
Tony Partner
Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
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11 years 6 months ago #95786 by ricardo01
Replied by ricardo01 on topic Display number of rows in array question based on previous numerical input
thanks, Tony

Also, is it possible to make the array question mandatory? This is what it looks now. In this example, only info about 3 courses should be entered...but still the person gets the warning


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11 years 6 months ago #95798 by tpartner
Replied by tpartner on topic Display number of rows in array question based on previous numerical input
The easiest way to handle that would be to populate all of the hidden text inputs with an "N/A" value.

So, the script in the "How many courses..." question would become:
Code:
<script type="text/javascript" charset="utf-8">
  $(document).ready(function(){
 
    // Identify the questions
    var q1ID = '{QID}';
    var q1 = $('#question'+q1ID+'');
    var q2 = $(q1).nextAll('.array-multi-flexi-text:eq(0)'); 
    var q2ID = $(q2).attr('id').split('question')[1];
 
    // Initial row handling
    handleRows($('input[type="text"]', q1));
 
    // Listener on the numeric input
    $('input[type="text"]', q1).mouseup(function(){
      var maxRows = $('tr:[id^="javatbd"]', q2).length;
      if($(this).val() > maxRows) {
        alert('You can only display a maximum of '+maxRows+' rows!');
        $(this).val('');
      }
      else {
        handleRows(this);
      }
    });
 
    function handleRows(el) {
      var numRows = $(el).val();
      $('tr:[id^="javatbd"]', q2).hide();
      $('tr:[id^="javatbd"]', q2).each(function(i){
        if(i >= numRows) {
          $('input[type="text"], select', this).val('');
        }
        else {
          $(this).show();
        }
      })
    }
 
    // Interrupt next/submit function
    $('form#limesurvey').submit(function(){
 
      // Load hidden inputs
      $('.subquestions-list tr:hidden input[type="text"]', q2).val('N/A');
 
      // Carry on with submit
      return true;
    });
  });
</script>
Cheers,
Tony Partner
Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
The following user(s) said Thank You: oppur
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11 years 6 months ago #96331 by oppur
Replied by oppur on topic Display number of rows in array question based on previous numerical input

tpartner wrote: If both questions are on the same page as your image indicates, add this to the source of the numeric question.

Code:
<script type="text/javascript" charset="utf-8">
  $(document).ready(function(){
 
    // Identify the questions
    var q1ID = '{QID}';
    var q1 = $('#question'+q1ID+'');
    var q2 = $(q1).nextAll('.array-multi-flexi-text:eq(0)'); 
    var q2ID = $(q2).attr('id').split('question')[1];
 
    // Initial row handling
    handleRows($('input[type="text"]', q1));
 
    // Listener on the numeric input
    $('input[type="text"]', q1).change(function(){
      var maxRows = $('tr:[id^="javatbd"]', q2).length;
      if($(this).val() > maxRows) {
        alert('You can only display a maximum of '+maxRows+' rows!');
        $(this).val('');
      }
      else {
        handleRows(this);
      }
    });
 
    function handleRows(el) {
      var numRows = $(el).val();
      $('tr:[id^="javatbd"]', q2).hide();
      $('tr:[id^="javatbd"]', q2).each(function(i){
        if(i >= numRows) {
          $('input[type="text"], select', this).val('');
        }
        else {
          $(this).show();
        }
      })
    }
  });
</script>

Here's a sample survey:

File Attachment:

File Name: limesurvey...4-28.lss
File Size:19 KB


Thank you. This work fine in Chrome, Safari, IE8. But not in IE10.
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11 years 5 months ago - 11 years 5 months ago #96350 by oppur
Replied by oppur on topic Display number of rows in array question based on previous numerical input
I found a temporary solution:
If I add to template startpage.pstpl
Code:
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8">
then this script work on IE10
Last edit: 11 years 5 months ago by oppur.
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10 years 3 weeks ago - 10 years 3 weeks ago #113895 by envitera
Replied by envitera on topic Display number of rows in array question based on previous numerical input
Hi, after variety solutions and posts red on this forum i consider myself no more than a fresh beginner in LS environment and even less in javascript.

As an introduction to my survey I'd like to construct a set of similar questions as the OP. That is reading a number which toggles row visibility in the following question. Does this solution here work with version 2.05+ ?

Alternative convenient solution would be to use Variable Length Array , which also didn't work for me. I've found this correction , but without luck. Finally i've tried to alter the simplified version to make it work with "array-multi-flexi-text", but without success.

Can someone give a feedback about functionality of those codes with the latest version of LS ?

As I am not at all experienced with javascript I was bouncing during a long time around the idea of subquestion relevance , but then found out that this might be implemented in the version 2.06.
Last edit: 10 years 3 weeks ago by envitera. Reason: expressions correction
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10 years 3 weeks ago #113906 by tpartner
Replied by tpartner on topic Display number of rows in array question based on previous numerical input
This works in 2.05:

Code:
<script type="text/javascript" charset="utf-8">  
  $(document).ready(function(){
 
    // Identify the questions
    var q1ID = '{QID}';
    var q1 = $('#question'+q1ID+'');
    var q2 = $(q1).nextAll('.array-multi-flexi-text:eq(0)'); 
    var q2ID = $(q2).attr('id').split('question')[1];
 
    // Initial row handling
    handleRows($('input[type="text"]', q1));
 
    // Listener on the numeric input
    $('input[type="text"]', q1).change(function(){
      var maxRows = $('tr.subquestion-list', q2).length;
      if($(this).val() > maxRows) {
        alert('You can only display a maximum of '+maxRows+' rows!');
        $(this).val('');
      }
      else {
        handleRows(this);
      }
    });
 
    function handleRows(el) {
      var numRows = $(el).val();
      $('tr.subquestion-list', q2).hide();
      $('tr.subquestion-list', q2).each(function(i){
        if(i >= numRows) {
          $('input[type="text"], select', this).val('');
        }
        else {
          $(this).show();
        }
      })
    }
  });
</script>

File Attachment:

File Name: limesurvey...4517.lss
File Size:19 KB
Cheers,
Tony Partner
Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
Attachments:
The following user(s) said Thank You: envitera
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