[LON-CAPA-admin] Images not showing up in student view for some questions

Michael Dugdale michael.dugdale at johnabbott.qc.ca
Thu Oct 17 21:28:39 EDT 2013

Thanks for the observation ray.

It's strange that you can't see it.  We're not vcu so we're only seeing what's been published system-wide.  As course coordinator, it's visible.  Only student roles are being denied access.

Browsing to the image file, the meta-data page (copy/pasted below) has the line "Copyright/Distribution: System wide - can be used for any courses system wide".

Strange that you're not able to see it out west.



Untitled Resource
Version: -1

Author(s): Josephus Ferguson
Lowest Grade Level: Not specified
Highest Grade Level: Not specified
MIME Type: [cid:08BF04EB-5C8A-4568-9457-8A55AF211B39]  JPEG Image Document
Language: Not set -
Creation Date: Mon Jun 2 09:37:25 pm 2008 (EDT)
Last Revision Date: Mon Jun 2 09:37:25 pm 2008 (EDT)
Publisher/Owner: Bartlett zzEdmonds [s2bdedmo:vcu]
Copyright/Distribution: System wide - can be used for any courses system wide
Custom Distribution File:
Source Available: Closed - XML source is closed to everyone
Source Custom Distribution File:
Suggested Replacement for Obsolete File:

On 2013-10-17, at 9:08 PM, Raymond Batchelor <batchelo at sfu.ca<mailto:batchelo at sfu.ca>> wrote:

Well, that particular image is not published system wide, because it does not appear on this side of the continent.
Perhaps the author (s2bdedmo:vcu) did not allow Sytemwide Copyright/Diustribution or did not yet publish it.  Better try to contact them.

----- Original Message -----
From: "Michael Dugdale" <michael.dugdale at johnabbott.qc.ca<mailto:michael.dugdale at johnabbott.qc.ca>>
To: "list about administration and system updating" <lon-capa-admin at mail.lon-capa.org<mailto:lon-capa-admin at mail.lon-capa.org>>
Sent: Thursday, 17 October, 2013 17:52:40
Subject: [LON-CAPA-admin] Images not showing up in student view for some questions


Looking for some help here. A chemistry teacher has reported a number of cases where the images associated with a problem don't show up for students. It loads fine for course coordinators. It's just the images that are included in the problem that are not showing up; the rest of the problem loads fine.

Trying to open just the image in a new tab (as student) gives the following error:

LON-CAPA Access Control

Access : Browse resources
Resource: /res/vcu/s2bdedmo/SOL05_HS_Chemistry/images/SOLHS05_Chemistry_19_MixingSolutionsTable.JPG
Action : Access Denied
Sorry ...
This action is currently not authorized.

I've looked in the file system, and the files are there, owner/group are www:www with permissions -rw-r--r--

As far as Apache logs go, I see many remarks of the form:

[Thu Oct 17 20:23:36 2013] [error] access to /res/vcu/s2bdedmo/SOL05_HS_Chemistry/images/SOLHS05_Chemistry_19_MixingSolutionsTable.JPG failed for, reason: Access Denied for michaeldugdale domain johnabbott access bre

Trying to get a sense of what's going on, I checked the problem file on the server's file system and it does, indeed have the line
<allow src="/res/vcu/s2bdedmo/SOL05_HS_Chemistry/images/SOLHS05_Chemistry_19_MixingSolutionsTable.JPG"/ >

And I've double-checked that SELINUX is disabled...

I'm fresh out of ideas about where to look next. Does anyone have any thoughts on where I should look?

Thanks in advance,

Michael Dugdale

Michael Dugdale
Co-chair (Scheduling)
Department of Physics
John Abbott College
21,275 Lakeshore Road
Ste. Anne de Bellevue, Québec
H9X 3L9, Canada
(514) 457-6610 Ext. 5888
michael.dugdale at johnabbott.qc.ca<mailto:michael.dugdale at johnabbott.qc.ca>

LON-CAPA-admin mailing list
LON-CAPA-admin at mail.lon-capa.org<mailto:LON-CAPA-admin at mail.lon-capa.org>

Raymond J. Batchelor, PhD.
Department of Chemistry
Simon Fraser University

Phone: 778-782-5635
LON-CAPA-admin mailing list
LON-CAPA-admin at mail.lon-capa.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.lon-capa.org/pipermail/lon-capa-admin/attachments/20131017/51b32c3f/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: jpg.gif
Type: image/gif
Size: 724 bytes
Desc: jpg.gif
URL: <http://mail.lon-capa.org/pipermail/lon-capa-admin/attachments/20131017/51b32c3f/attachment.gif>

More information about the LON-CAPA-admin mailing list