checkboxlist within a RadioMultiAnswer about pg

[Alex-Jordan]

What I described is in 2.18.

I just checked devleop, and the graying out issue is not an issue there. However it still does not accept the correct answer selections.

[drgrice1]

Checkboxes are supposed to work as a part answer. I will look at it.

[drgrice1]

The issue with the checkboxes not graying out correctly was fixed in #930.

It turns out I also knew about the other issue, but I forgot about it. I also don't know how to fix it so that the following workaround is not needed. What you need to do is add checkTypes => 0 to the RadioMultiAnswer object. So that would be

$rma = RadioMultiAnswer(
	[
		['\(H\) is a subspace.'],
		[ '\(H\) is not a subspace because (check all that apply): %s', $checks ] ],
	1,
	checkTypes => 0,
	labels     => [ 'Yes', 'No' ]
);

Note that this is only needed when a CheckboxList is used as a part answer, and the CheckboxList only has one correct answer. The checkTypes => 0 option is not needed if there are more than one correct answer. (Also note that you don't need to use with to add options to a RadioMultiAnswer.)

Also note that the same thing is true for a CheckboxList part answer of a MutliAnswer object from the parserMultiAnswer.pl macro. There you have to provide a custom checker, but the checker doesn't even get a chance to check the answers unless you set checkTypes => 0 when a CheckboxList has only one correct answer.

The issue is that the correct answer always has type "List". A student answer is of type "String" in the case that only one checkbox is checked, but is also of type "List" if multiple checkboxes are checked.

[pstaabp]

Fixed in #1011