[LON-CAPA-admin] Course Map Undefined Error

[Stuart Raeburn]

Joyce,

>                 When I'm in the course as a student and scrolling   
> through the problems using the green arrows, I don't see a "Courses"  
>  link at the top right

Students will see a "Courses" link.  You will see a "Roles" link  
instead, because you have "advanced" roles (e.g., Domain Coordinator,  
Course Coordinator, and/or Author).  Both links point at /adm/roles.

>                 Would the "Courses" link appear if I actually had   
> the "Course Map  Undefined" error?

Yes, the link will be there, although the text might be Courses or  
Roles, depending on the user's roles.

Another difference you'll see if you follow the link is that the  
button for the current course role will be labelled "Re-Initialize"  
for "advanced" users and "Re-Select" for others.

Stuart Raeburn
LON-CAPA Academic Consortium

Quoting "Young, Joyce E" <young257 at purdue.edu>:

> Stuart,
>
>                 When I'm in the course as a student and scrolling   
> through the problems using the green arrows, I don't see a "Courses"  
>  link at the top right. My screen appears as shown below.
>
>                 Would the "Courses" link appear if I actually had   
> the "Course Map  Undefined" error? I've not seen the error, just had  
>  it reported to me.
>
>                                                                       
>             Thanks,
>
>                                                                       
>                             Joyce
>
>
>
> [cid:image001.png at 01D10726.37CC69B0]
>
>
>
> -----Original Message-----
> From: lon-capa-admin-bounces at mail.lon-capa.org   
> [mailto:lon-capa-admin-bounces at mail.lon-capa.org] On Behalf Of   
> Stuart Raeburn
> Sent: Wednesday, October 14, 2015 6:15 PM
> To: lon-capa-admin at mail.lon-capa.org
> Subject: Re: [LON-CAPA-admin] Course Map Undefined Error
>
>
>
> Hi,
>
>
>
>> The error message: 'Coursemap undefined' will be shown when a student
>
>> attempts to display the Course Contents screen, when either or both of
>
>> the following items:
>
>>
>
>> map_start_/uploaded/purdue/<coursenum>/default.sequence
>
>> map_end_/uploaded/purdue/<coursenum>/default.sequence
>
>
>
> A correction ...
>
>
>
> The second item should be:
>
> map_finish_/uploaded/purdue/<coursenum>/default.sequence
>
>
>
>>> "Course Map  Undefined" error. They seem to have to log out and
>
>>> login to get back  to the problem.
>
>
>
> Clicking the "Courses" link at top right, and then pushing the   
> "Re-select" button for the particular course should enable access   
> once again to the particular problem, i.e., without logout and   
> re-login.
>
>
>
> Stuart Raeburn
>
> LON-CAPA Academic Consortium
>
>
>
>
>
>> Hi Joyce,
>
>>
>
>> The error message: 'Coursemap undefined' will be shown when a student
>
>> attempts to display the Course Contents screen, when either or both of
>
>> the following items:
>
>>
>
>> map_start_/uploaded/purdue/<coursenum>/default.sequence
>
>> map_end_/uploaded/purdue/<coursenum>/default.sequence
>
>>
>
>> are absent from the user's course session hash, found in the GDBM file:
>
>>
>
>> /home/httpd/perl/tmp/<username>_<courseid>.db
>
>>
>
>> where <courseid> is the LON-CAPA course ID, e.g.,
>
>> purdue_22608011029874510purduel1
>
>>
>
>> On the command line you can use the script:
>
>> /home/httpd/perl/debug/dump_db.pl to view the contents of a GDBM   
>> file in LON-CAPA.
>
>>
>
>> The perl module which performs the page flip in response to a student
>
>> pressing either the forward or backward green arrow is:
>
>> /home/httpd/lib/perl/Apache/lonpageflip.pm.
>
>>
>
>>> It appears that when scrolling through  problems using the Green
>
>>> Arrow, the problem takes a long time to  load.
>
>>
>
>> Is the issue always with the same problem?  What resource is it?  Is
>
>> there discussion attached to the instance of the problem in the course?
>
>>
>
>> If you are able to reproduce this error, what are the timestamps for
>
>> the GDBM files:
>
>>
>
>> /home/httpd/perl/tmp/<username>_<courseid>.db
>
>> /home/httpd/perl/tmp/<username>_<courseid>_parms.db
>
>>
>
>> for your user session when this occurs?  Were they recently created,
>
>> for example because the course contents were updated by a Course
>
>> Coordinator within the past 20 minutes?
>
>>
>
>>
>
>> Stuart Raeburn
>
>> LON-CAPA Academic Consortium
>
>>
>
>> Quoting "Young, Joyce E" <young257 at purdue.edu<mailto:young257 at purdue.edu>>:
>
>>
>
>>> We are having issues in one of our courses with students receiving
>
>>> a  "Course Map Undefined" error. It appears that when scrolling
>
>>> through  problems using the Green Arrow, the problem takes a long
>
>>> time to  load. The students then go to Course Contents to try to
>
>>> access the  problem in a different fashion, and then they get the
>
>>> "Course Map  Undefined" error. They seem to have to log out and
>
>>> login to get back  to the problem.
>
>>> If they refresh the page instead of clicking on Contents, it gives
>
>>>  them "End of Sequence". Since they are not done, they still have
>
>>> to   click on Contents, which gives them the "Course Map Undefined"
>
>>>  error.
>
>>> Please advise.
>
>>>
>
>>> Thanks,
>
>>>
>
>>>             Joyce Young
>
>>>
>
>>> Joyce Young
>
>>> Programmer/Analyst
>
>>> ITAS - Student Systems Competency Center Purdue University
>
>>> 3495 Kent Avenue, Suite 100
>
>>> West Lafayette, IN 47906
>
>>> Phone: (765) 427-6340
>
>>> Fax: (765) 464-2233
>
>>> Campus Mail: ROSS
>
>>> young257 at purdue.edu<mailto:young257 at purdue.edu<mailto:young257 at purdue.edu%3cmailto:young257 at purdue.edu>>