[LON-CAPA-users] loncapa forgetting submissions?

Jim Maxka lon-capa-users@mail.lon-capa.org
Mon, 28 Mar 2005 14:16:23 -0700

Hi David => I had the same thing happen as Gerd mentioned.  A student 
did her roomates homework.  It was tricky to figure out how to deal with 
her, because I had already posted the answers before she noticed that 
she had not done any of her homework.  I think she was happy that I 
excused those problems. 
It might be more difficult for those of us who are in places where we 
don't have logon contests and the campus newspaper does not run stories 
about us.. --> jim
Gerd Kortemeyer wrote:

> Hi David,
> Yep, green box means that the server had stored the data, no way 
> around it.
> The only time I have seen otherwise is about 6 years ago in 
> LectureOnline - computer services at another university had restored a 
> broken disk from backup, and the data between the last backup and the 
> restore was lost - well, duh!
> The other time I saw this (twice) was that a student was walking up to 
> the open session of a roommate and solved their roommate's homework. 
> The student did see green boxes, but just not theirs. We could nicely 
> trace everything, no problem.
> All three instances of "the computer ate my homework" were human 
> negligence.
> Use the receipt requirement which Mark suggested earlier - no more 
> complaints after that.
> - Gerd.
> On Mar 28, 2005, at 10:43 AM, Guy Albertelli II wrote:
>> Hi David,
>>> I have a student who is saying that they have submitted some answers to
>>> problems on LONCAPA from home, but they are showing up as never being
>>> tried.  They are claiming that they are getting green boxes to 
>>> questions
>>> when doing the homework at home, and then when they come to school, the
>>> questions are as if they haven't ever been tried.
>> Lon-CAPA does things internally like this:
>> 1. the student submits the webpage
>> 2. Lon-CAPA parses the homwework problem and decides whether they got
>>     it right or wrong
>> 3. Lon-CAPA then send the grade information back to their homeserver to
>>     be stored in their student record.
>> 4. Lon-CAPA then _asks_ their homeserver what the status on the
>>     homework problem is.
>> 5. Lon-CAPA then reparses the homework problem and uses the just
>>     aquired data from their homewserver to render the problem
>> 6. Lon-CAPA sends the new webpage out
>> step 1 and 6 involves users computer to server communication
>> steps 2,3,4,5 involve at worst server to server communication, and in
>> your case with only 1 server, the server talking to itself.
>> So I can't see any possible way for the student to see a green box,
>> and then for them to have absolutely nothing logged in their
>> submission record.
>> and if something has gone awry with steps 2-5, it would affect all
>> traffic on that server not just a user here or there.
>> So without more data (is his accesses logged in
>> /var/log/httpd/access_log? How about in trackstudent (Go to Classlist,
>> click on the student, (you should be on the aboutme page for that
>> student) click on the 'View recent activity by this student' link))
>> -- 
>> guy@albertelli.com  LON-CAPA Developer  0-7-2-9-
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> -- 
> Gerd Kortemeyer, Ph.D.
> Michigan State University
> http://www.lite.msu.edu/kortemeyer/
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