(2.5) I have gap fill test question that has the answers as:
[Line-of-road|yard treatment| brush control]
I wanted to add wildcard so line of road (no hyphens) would be marked correct. I changed it to line*of*road, took the quiz, typed in line of road and got it wrong. how can I fix that
Good question David, I find wildcards quite a challenge so it is interesting to experiment with permutations.
You might try line*.of*.road
(Note the period after the asterix) Which will mark as correct
line of road
and
line-of-road
However that regular expression is looking for something like the string
lines
followed by any character zero or more times. This means it would also mark as correct
lineofroad
and
linezofkroad
It would be possible to make an expression that limits the acceptable answers more closely but it would mean a more complex regular expression.
The Gapfill question parses wildcards uses the PHP preg_match function so whatever that understands will be used on your string. You can see some documentation of various question and regular expression stuff
http://docs.moodle.org/20/en/Regular_Expression_Short-Answer_question_type
and the recently updated documentation for this question typel
http://docs.moodle.org/25/en/Preg_question_type
it worked, thank you
I'm glad to be taking an intro php course. This will all make sense.
Hi Marcus,
I'm sure I got it to work some time ago but no longer now.
using gapfill question type from your github $plugin->version = 2006082509; $plugin->release ='1.2';
If I want to use the square brakets special characters in gapfill, then I have to select a different separator, OK so I use the curled braces instead. But even then it does not work.
Ask a question about the color of the sky.
Q1 What {[color|colour]} is the sky?
Q2 What {colou?r} is the sky?
The regular expression works in Q2, not in Q1.
Why is that?
Joseph
The delimiter (e.g. [ or {) is discarded before the string is sent to preg_match and so if you have switched to { the question text should read
Q1 What {color|colour} is the sky?
I have included a sample_questions.xml file with the distribution but it doesn't cover wildcard usage. In my next update I will include one or more examples.
I was showing some people this question type recently and I had an inspiration to claim that I could explain it's basic usage in a single sentence
"put square braces around the missing words"
Of course regex usage would require a few more sentences.
Marcus "The delimiter (e.g. [ or {) is discarded before the string is sent to preg_match..."
Ah, you changed that from the first version I had tested. And it's a good idea. So the answer to the OP's query would be (using the { } character delimiters):
{Line[-| ]of[-| ]road|yard treatment| brush control}
or, or course
{Line-of-road|Line of road|yard treatment| brush control}
or (using the default square brackets delimiters):
[Line-of-road|Line of road|yard treatment| brush control]
Joseph
That looks nice. I have taken a look at Olegs question type and I like the way he includes a regex tester widget. In the move from 1.1 to 1.2 I did quite a bit of "behind the scenes" refactoring in preparation for future developments.
I also worked on the "Olympic medal" feedback as shown in this screen shot. It would be better without the slightly misleading correct answer count but I feel it is an improvement.
This is what I used- David
That will probably reject brush control (note extra spaces). But you probably don't want to trap every single permutation