UndefinedError: None has no member named "get"

[fengxf]

How to Reproduce

While doing a GET operation on /admin/theme/custom, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'cat_id': u'theme', 'panel_id': u'custom', 'path_info': None}

User agent: Mozilla/5.0 (X11; U; Linux x86_64; zh-CN; rv:1.9.2.23) Gecko/20110920 SUSE/3.6.23-0.2.1 Firefox/3.6.23

System Information

Trac	0.12.2
Babel	0.9.6
Docutils	0.6
FullBlog	0.1.1
Genshi	0.6
Mercurial	1.9.2+3-86380f24e697+20110908
Pygments	1.3.1
pysqlite	2.4.1
Python	2.6.5 (r265:79063, May 6 2011, 17:25:59) [GCC 4.5.0 20100604 [gcc-4_5-branch revision 160292]]
setuptools	0.6c11
SQLite	3.6.23
Subversion	1.6.17 (r1128011)
jQuery	1.4.2

Enabled Plugins

LightGreenTheme	0.1
TracFullBlogPlugin	0.1.1
TracMercurial	0.12.0.28dev-r10784
TracTags	0.7dev
TracThemeEngine	2.0.1

Python Traceback

Traceback (most recent call last):
  File "build/bdist.linux-x86_64/egg/trac/web/main.py", line 511, in _dispatch_request
    dispatcher.dispatch(req)
  File "build/bdist.linux-x86_64/egg/trac/web/main.py", line 258, in dispatch
    content_type)
  File "build/bdist.linux-x86_64/egg/trac/web/chrome.py", line 868, in render_template
    stream.render(method, doctype=doctype, out=buffer)
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/core.py", line 183, in render
    return encode(generator, method=method, encoding=encoding, out=out)
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/output.py", line 58, in encode
    for chunk in iterator:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/output.py", line 339, in __call__
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/output.py", line 826, in __call__
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/output.py", line 670, in __call__
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/output.py", line 771, in __call__
    for kind, data, pos in chain(stream, [(None, None, None)]):
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/output.py", line 586, in __call__
    for ev in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/core.py", line 288, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/core.py", line 288, in _ensure
    for event in stream:
  File "build/bdist.linux-x86_64/egg/trac/web/chrome.py", line 981, in _strip_accesskeys
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/core.py", line 288, in _ensure
    for event in stream:
  File "build/bdist.linux-x86_64/egg/trac/web/chrome.py", line 970, in _generate
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/core.py", line 288, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/base.py", line 605, in _include
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/markup.py", line 362, in _match
    content = list(content)
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/base.py", line 605, in _include
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/markup.py", line 316, in _strip
    event = next()
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/base.py", line 545, in _flatten
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/directives.py", line 359, in __call__
    iterable = _eval_expr(self.expr, ctxt, vars)
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/base.py", line 277, in _eval_expr
    retval = expr.evaluate(ctxt)
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/eval.py", line 178, in evaluate
    return eval(self.code, _globals, {'__data__': data})
  File "/var/lib/wwwrun/.python-eggs/TracThemeEngine-2.0.1-py2.6.egg-tmp/themeengine/templates/admin_theme_custom.html", line 19, in <Expression u"iter(current_theme.get('colors',()))">
    <py:for each="color in current_theme.get('colors',())">
  File "/usr/lib/python2.6/site-packages/Genshi-0.6-py2.6.egg/genshi/template/eval.py", line 277, in _die
    raise UndefinedError(self._name, self._owner)
UndefinedError: None has no member named "get"

[osimons]

PluginIssue - see ​th:ThemeEnginePlugin