I put this in Feature : it's a feature, but not a request. Needed feature

@tammo : i start to work on it next week.

But there are some glitch here.

1. using a boostrap class seems needed for "automatioc coloring generation" without need to update template.css
2. with has-error : all line show red : see the screenshot. There are no way to reset the class for 'not empty' text. I must set the border-color manually in template.css
3. currently has-error usage are only for "mandatory", think it's ok, then we can use has-waring for "Expression Manager error"

See http://getbootstrap.com/css/#forms-control-validation

Some possible solution
1

• PHP stay like here
• When a value is not empty : set has-success on the td
• When all value are not empty : remove the has-success and the has-error
  => see second screenshot
  2
• PHP do : add 'has-error' on the cell+answertext
• Javascript do : if answer is not empty : remove the has-error on the cell, if all answers are OK : remove the has-error on the line.
  => near same than second screenshot, but no green : grey

And also tricky for questions when minimal 2 and maximal 4 need to be answered. But that will be another challenge...

It's another issue : must be done with Expression Manager + Expression Manager event.

Think :
. mandatory : use has-error
. validation issue : use has-warning , BUT em don't set error on line, only on whole answers. Since 1.92

OK,
Reviewing html
ls-error-mandatory on the line : always
has-error on the answer-item, sometimes it's the line (radio array) sometimes not
has-error on answer-text (can be removed maybe)

Tammo are not in "assigned possibility", just need an advice ...

Looking at system, maybe it's better to remove the 'has-error' from PHP.

Adding it to the new 'template-default' package for starting (or limesurvey-public) , doping it only in javascript.

https://github.com/LimeSurvey/LimeSurvey/commit/f1e783477051b1e97750dc386a0a5ce9a6324f1b

We have some issue :

• We can set has-error/has-warning on all single choice question for mandatory and/or Expression.
• We can set has-error for mandatory on all multiple question (sometimes hard, but can be done)
• We can not set has-warning/has-error for expression on multiple question type : EM return only errors globally (This question have error, and not this sub-questions have error).

Then : not by core.

And then just add 'ls-mandatory-error' on the line + text-error and the 'answertext'.

OK ?

Sounds like a reasonable suggestion to me.

A related question: Can we have different mandatory warning messages for different question types? E.g. for Array Texts it would be nice to tell the user something more specific. Instead of just "This error is mandatory..." we should add "...please enter text at every text field."

a) Is this possible?
b) Can it be implemented easily?
c) Do you think it's helpful to the user?

a + b : already done:

https://github.com/LimeSurvey/LimeSurvey/blob/master/application/helpers/expressions/em_manager_helper.php#L6398
https://github.com/LimeSurvey/LimeSurvey/blob/master/application/helpers/expressions/em_manager_helper.php#L6439
https://github.com/LimeSurvey/LimeSurvey/blob/master/application/helpers/expressions/em_manager_helper.php#L6471
https://github.com/LimeSurvey/LimeSurvey/blob/master/application/helpers/expressions/em_manager_helper.php#L6494

We don't use enter text, think we use 'Please fill ...'

PS : really helpfull : tank or checkbox is needed for example. BUT : my english is so poor : u just don't update language string if i can ;)