Error: Macro Image(foo.png) failed

[anonymous]

Hello,

I've just installed Trac and TracWikiToPdfPlugin 2.2. When I click on WikiToPdf on a page with images, the following error appears in the generated PDF instead of displaying the images:

Error: Macro Image(foo.png) failed
sequence item 0: expected string, NoneType found

Here is the trace from the Trac logs:

2008-08-21 15:23:45,760 Trac[formatter] DEBUG: Executing Wiki macro Image by provider <trac.wiki.macros.ImageMacro object at 0x4292f32c>
2008-08-21 15:23:45,764 Trac[formatter] ERROR: Macro Image(foo.png) failed
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/wiki/formatter.py", line 468, in _macro_formatter
    return macro.process(args, in_paragraph=True)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/wiki/formatter.py", line 179, in process
    text = self.processor(text)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/wiki/formatter.py", line 166, in _macro_processor
    text)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/wiki/macros.py", line 425, in expand_macro
    if attachment and 'ATTACHMENT_VIEW' in formatter.perm(attachment):
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/perm.py", line 523, in has_permission
    return self._has_permission(action, resource)
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/perm.py", line 536, in _has_permission
    decision = PermissionSystem(self.env). \
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/perm.py", line 431, in check_permission
    self.log.debug("No policy allowed %s performing %s on %r" %
  File "/usr/lib/python2.4/site-packages/Trac-0.11.1-py2.4.egg/trac/resource.py", line 111, in __repr__
    return '<Resource %r>' % (', '.join(reversed(path)))
TypeError: sequence item 0: expected string, NoneType found

Here is my System Information

Trac:	0.11.1
Python:	2.4.1 (#1, Sep 25 2007, 16:58:32) [GCC 4.0.2 20050901 (prerelease) (SUSE Linux)]
setuptools:	0.6c8
SQLite:	3.2.2
pysqlite:	2.2.2
Genshi:	0.5.1
mod_python:	< 3.2
Subversion:	1.2.3 (r15833)
jQuery:	1.2.6

Thanks for your support,

RB

[Diorgenes Felipe Grzesiuk]

Hi

This is not error!

Your code page:

[[Image(foo.png)]]

This is correct code page:

[[Image(PageNameWiki:foo.png)]]

[anonymous]

Ok My bad, I thought [[Image(foo.png)]] was a *normal* way to include images in the wiki pages. I've still trouble to make the images displayed in the generated PDF. Could you please explain me what do you mean by

# base_dir is the Apache DocumentRoot, It is need to get PDF files with images.
base_dir = /path/to/DocumentRoot

Should base_dir be set with the path on my server or the link in my browser? Anyway, both eg: /var/www/htdocs or eg: ​http://mydomain.com don't work. Should I change another configuration lines in my trac.ini?

Thanks,

RB

[Diorgenes Felipe Grzesiuk]

Replying to anonymous:

Ok My bad, I thought [[Image(foo.png)]] was a *normal* way to include images in the wiki pages. I've still trouble to make the images displayed in the generated PDF. Could you please explain me what do you mean by

# base_dir is the Apache DocumentRoot, It is need to get PDF files with images.
base_dir = /path/to/DocumentRoot

Should base_dir be set with the path on my server or the link in my browser? Anyway, both eg: /var/www/htdocs or eg: ​http://mydomain.com don't work. Should I change another configuration lines in my trac.ini?

Thanks,

RB

Hi, my configurations:

[wikitopdf]
base_dir = /var/www
pathtocover = /var/www/trac11/htdocs/cover
link = http://server/trac11
folder_name = trac11

Regards

Diorgenes F. Grzesiuk

[anonymous]

FYI.

I think this point should be rethought, since trac is not always under the DocumentRoot directory.

For example, my trac project is under /var/trac/myproject, and it is configured in a way that I access it using http://myserver.com/trac.

It means that when displayed in the wiki, the <img> elements are pointing to something like trac/raw-attachment/wiki/mypage/myimage.png.

So, when you tranform the wiki text into the html page by replacing raw-attachment with attachments and adding before the variable base_dir (let's say /var), it looks for the image in the server directory var/trac/attachments/wiki/mypage/myimage.png.

It doesn't work since my image is in the directory /var/trac/'''myproject'''/attachments/wiki/mypage/myimage.png.

In your case, it just works fine since the <img> element in the wiki is trac11/raw_attachment/wiki/mypage/myimage.png. That fits with your server directory /var/www/trac11/attachments/etc.

I fixed it by modifying the source code of the plugin. It think it's an issue that should be considered.

[Diorgenes Felipe Grzesiuk]

Replying to anonymous:

FYI.

I think this point should be rethought, since trac is not always under the DocumentRoot directory.

For example, my trac project is under /var/trac/myproject, and it is configured in a way that I access it using http://myserver.com/trac.

It means that when displayed in the wiki, the <img> elements are pointing to something like trac/raw-attachment/wiki/mypage/myimage.png.

So, when you tranform the wiki text into the html page by replacing raw-attachment with attachments and adding before the variable base_dir (let's say /var), it looks for the image in the server directory var/trac/attachments/wiki/mypage/myimage.png.

It doesn't work since my image is in the directory /var/trac/'''myproject'''/attachments/wiki/mypage/myimage.png.

In your case, it just works fine since the <img> element in the wiki is trac11/raw_attachment/wiki/mypage/myimage.png. That fits with your server directory /var/www/trac11/attachments/etc.

I fixed it by modifying the source code of the plugin. It think it's an issue that should be considered.

Hi

Ok, What you like change it? Do you have a path file? I was many tests, but I wasn't found error equal yours...

Regards

Diorgenes F. Grzesiuk

[anonymous]

I think that basically, you should add the base_dir value before attachments/wiki/mypage/myimage.png and not before trac/attachments/wiki/mypage/myimage.png as it is now.

I really like this pluggin. I've got some ideas on how to make it involve, like for example:

• being able to transform the wiki TOC (PageOutline) into a Summary in the PDF file,
• center images,
• support of HTMLDOC Comments: ​http://www.htmldoc.org/documentation.php/Comments.html.

[anonymous]

Hi there,

I found a solution for my trac 0.11.3 instance on ubuntu 8.04 with apache2 (single project):

In order to get a correct path for htmldoc to the images, set "PythonOption TracUriRoot /trac/wiki" File: /etc/apache2/sites-available/trac

<Location /trac>
   SetHandler mod_python
   PythonHandler trac.web.modpython_frontend
   PythonPath "sys.path + ['/usr/share/trac']"
   PythonOption TracEnv /var/trac/wiki
   PythonOption TracUriRoot /trac/wiki
   AuthType Basic
   AuthName "Trac"
   AuthUserFile /etc/apache2/trac.passwd
#   Require valid-user
</Location>

File: /var/trac/wiki/conf/trac.ini

...
[wikitopdf]
base_dir = /var
folder_name = trac
link = http://localhost/trac/wiki
pathtocover = /var/trac/wiki/cover
titlefile = 
...

base_dir = /var

Now i've tested the following Image-Macro's in some wiki-sides: 1 .

2.

3.

The first two are working the thrid throws an error-print-out in the PDF.

Just my 2 cents to this Ticket. If this info is usefull it's just helpfull to point this out at the installation / configuration notice of this very cool Plugin.

sincerely

Ice

[anonymous]

Are there no solutions to this ?

I've tried several configurations but no images so far, please clarify the paths we should use to get images in pdf's