Bug 836642 - Plugin page displays blank chart and no workflow table
Plugin page displays blank chart and no workflow table
Product: Fedora
Classification: Fedora
Component: trac-workflowadmin-plugin (Show other bugs)
x86_64 Linux
unspecified Severity medium
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Assigned To: Andrea Veri
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2012-06-29 14:08 EDT by Brian Sipos
Modified: 2013-07-31 14:29 EDT (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2013-07-31 14:29:09 EDT
Type: Bug
Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
A view of the web page in firefox (38.00 KB, image/png)
2012-06-29 14:08 EDT, Brian Sipos
no flags Details

  None (edit)
Description Brian Sipos 2012-06-29 14:08:53 EDT
Created attachment 595347 [details]
A view of the web page in firefox

Description of problem:
The workflow plugin is able to be enabled and selected in the admin console, but no workflow data is displayed in either the table or the image, and any attempts to push buttons result in a Trac error.

Version-Release number of selected component (if applicable):
Plugin version, Trac version 0.12.3

How reproducible:
Every time on multiple Trac projects.

Steps to Reproduce:
1. Install the plugin package.
2. Open the admin console on a trac project.
3. Open the "Workflow Admin" admin section.
4. Observe the blank view, although a look at the underlying HTML seems to have table data (which must be hidden by javascript??).
Actual results:
A blank flow graph and no workflow stages.

Expected results:
A table with workflow stages and graph display of the same.

Additional info:
The back trace after pushing a button (in this case the "Move Up" button):
File "/usr/lib/python2.7/site-packages/trac/web/main.py", line 522, in _dispatch_request
File "/usr/lib/python2.7/site-packages/trac/web/main.py", line 243, in dispatch
  resp = chosen_handler.process_request(req)
File "/usr/lib/python2.7/site-packages/trac/admin/web_ui.py", line 117, in process_request
File "/usr/lib/python2.7/site-packages/tracworkflowadmin/web_ui.py", line 90, in render_admin_panel
File "/usr/lib/python2.7/site-packages/tracworkflowadmin/web_ui.py", line 405, in _parse_request
  params = json.loads(req.args.get('params'))
File "/usr/lib64/python2.7/json/__init__.py", line 326, in loads
  return _default_decoder.decode(s)
File "/usr/lib64/python2.7/json/decoder.py", line 366, in decode
  obj, end = self.raw_decode(s, idx=_w(s, 0).end())

I can also provide sections of the produced HTML for the page; there seems to be a table in the HTML but it is not displayed in the browser.
Comment 1 Andrea Veri 2012-06-30 11:59:52 EDT
Do you have the 'graphviz' package installed? If not, can you install it and report back please?
Comment 2 Brian Sipos 2012-07-02 08:29:40 EDT
Yes, I installed graphviz after I saw that there was a dependence on the graph tools. After installing graphviz, I have since restarted tracd several times, and always see the same workflow display.
Comment 3 Kevin Fenzi 2012-07-05 11:50:36 EDT
FYI, It seems to work just fine on RHEL6 where I did all my testing... so this would seem to me to be a python or other f17 related issue...
Comment 4 Fedora End Of Life 2013-07-03 15:40:17 EDT
This message is a reminder that Fedora 17 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
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Comment 5 Fedora End Of Life 2013-07-31 14:29:14 EDT
Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is 
no longer maintained, which means that it will not receive any further 
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