Mark,
>
> I just ran into something unexpected, and I’m reaching out to see if anyone
> has a workaround.
>
Your workaround:
"We are now telling students to right-click, "Save Link As” and change the file
type to .pdf" ...
sounds like a reasonable solution.
A sub-optimal alternate solution would be for the instructor to take a
screenshot of the PDF file, and save as a jpg file, before uploading that as
the returned "commented" file, in the case where the extension used by the
student was .jpg.
When the "Save & Next" button is pushed to complete the upload of the
"commented" file, LON-CAPA displays this message:
<filename of returned file> will be the uploaded filename <path to
file>/<original filename>
which in your case could be something like:
instructor_comments.pdf will be the uploaded filename
/uploaded/ohiou/astudent/portfolio/turned_in/Physics_2020/Exam3/question10/forcediagram.pdf
LON-CAPA differentiates between the original file, the "graded" file, i.e., the
submitted file present at the time of grading, and any returned file(s) by
inserting: dot integer dot between the filename of the file submitted by the
student and the extension used by the student for the file. This functionality
was implemented in July 2006, and first included in LON-CAPA 2.2.
If a student uploaded a file named: report.jpg
then on the filesystem in the student's portfolio space you would find:
report.jpg (original)
report.1.jpg ("graded")
report.2.jpg ("returned")
report.3.jpg (a second file returned for the same assignment to the same
student).
This type of versioning is not only present on the filesystem, but is also
tracked in the file_permissions.db file which determines who may see a file in
a student''s portfolio space.
A file named report.pdf would be considered a different file, and graded (and
returned versions of that file would be: report.1.pdf, report.2.pdf,
report.3.pdf etc.)
LON-CAPA does not currently peek at the contents of a "commented file" to
determine if the contents of the "commented" file indicate a mime type
consistent with the file extension used for the original file.
LON-CAPA also ignores the filename chosen by the instructor for the "commented"
file and simply names the file according to the versioning scheme described
above.
When a student displays his/her portfolio space, he/she will see the original
file listed, and if it has been submitted for an assignment, an arrow icon that
can be toggled to open or close a listing that includes links to the versioned
files (i.e., "graded", returned etc.). The pattern -- name, version, extension
-- is used to identify which files should be grouped together when displaying a
portfolio directory listing. LON-CAPA relies on the only difference between
the original file and related files being: dot integer dot (i.e., it does not
support using a different extension for the original file and the commented
file).
As noted in a recent post to the admin list:
mail.lon-capa.org/pipermail/lon-capa-admin/2020-April/003413.html
a student can delete the original file (after it has been graded) to reduce
portfolio usage. The "versioned" files (i.e., graded, and commented) do not
contribute to the calculation of portfolio disk usage.
Stuart Raeburn
LON-CAPA Academic Consortium
________________________________________
From: LON-CAPA-users <[email protected]> on behalf of
Lucas, Mark <[email protected]>
Sent: Sunday, April 12, 2020 4:17 PM
To: [email protected]
Subject: [LON-CAPA-users] Returning Work to students
Hi,
I just ran into something unexpected, and I’m reaching out to see if anyone has
a workaround.
We had students upload a picture of their work for some of the recent online
exams.
In the grading area there is an option to return a commented version of the
file to the student:
("Return commented version of samplework.jpg to student:”)
My colleagues took what in this case was primarily jpegs, pulled them into
pdfs, commented
them and then uploaded.
When uploading the file keeps the same name (and file extension) as the
originally submitted
document. One can, in retrospect, see how it is inferred in the language
“Return commented
version of…”), but it caught us off guard.
We are now telling students to right-click, "Save Link As” and change the file
type to .pdf.
Are we missing something? Is there a way to cleanly keep the filetype on the
upload?
Thanks,
Mark
--
Mark Lucas email:
[email protected]
252D Clippinger Lab phone:
(740)597-2984
Department of Physics and Astronomy fax: (740)593-0433
Ohio University
Athens, OH 45701
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