Bug on Trac 0.12: Error: unable to create image directory

[Luiz Fernando]

• The following message is returning when trying to use this Macro on Trac 0.12:

Error: unable to create image directory

• My environment:
  • Ubuntu 10.10 amd64 server

System Information

Trac	0.12
Genshi	0.6
mod_wsgi	2.8 (WSGIProcessGroup WSGIApplicationGroup %{GLOBAL})
psycopg2	2.0.13
Pygments	1.2.2
Python	2.6.5 (r265:79063, Apr 16 2010, 14:15:55) [GCC 4.4.3]
setuptools	0.6
Subversion	1.6.6 (r40053)
jQuery:	1.4.2

Installed Plugins

Backlinks	N/A	/usr/local/lib/python2.6/dist-packages/Backlinks.pyc
ChangeLogMacro	0.2-r7928	/usr/local/lib/python2.6/dist-packages/ChangeLogMacro-0.2_r7928-py2.6.egg
ComponentsListMacro	N/A	/usr/local/lib/python2.6/dist-packages/ComponentsListMacro.pyc
TicketImport	0.8	/usr/local/lib/python2.6/dist-packages/TicketImport-0.8-py2.6.egg
TracSectionEditPlugin	0.1	/usr/local/lib/python2.6/dist-packages/TracSectionEditPlugin-0.1-py2.6.egg
TracTags	0.6	/usr/local/lib/python2.6/dist-packages/TracTags-0.6-py2.6.egg

[Ryan J Ollos]

It looks like it creates a directory named formulas within htdocs_dir. See formula.py​ line 132. Perhaps it is just a permissions issue?

[Luiz Fernando]

Thanks for your promptly reply!

• I've verified and the macro is trying to create the image dir in the project environment htdocs dir. However, my project environment directories don't have the htdocs subdir. Perhaps this is happening because I am using the same project directories since Trac 0.9 (copying and pasting the dirs on every trac update) and new versions of Trac are creating these local htdocs subdirs automatically. Creating manually the project local htdocs dir solves the problem.
• The question is: since I am installing the plugin globally, shouldn't it use the htdocs dir given by the htdocs_location parameter on trac.ini?

Regards

[Ryan J Ollos]

Replying to luizfernando:

• The question is: since I am installing the plugin globally, shouldn't it use the htdocs dir given by the htdocs_location parameter on trac.ini?

I guess we need to figure out what exception is being thrown by os.mkdir. I'm new to Python, but can we do that by inserting raise into the except: block?

To answer your other question, it might be useful to print the directory path

try:
    os.mkdir(imagePath)
except:
    return "<b>Error: unable to create image directory %s</b><br>" % imagePath   

[Ryan J Ollos]

Replying to luizfernando:

Creating manually the project local htdocs dir solves the problem.

This makes me think that you have permission to create the directory manually, but Trac does not.