AttributeError: 'NoneType' object has no attribute 'id' error when enabling textbox

[anonymous]

Currently the TracLinksPlugin is the only plugin I have enabled. When I set traclinks.textbox.textbox = enabled, I get the following error message when I navigate to changesets in which the log message contains a revision TracLink (ex. r5245, etc.):

2013-09-17 17:16:53,998 Trac[main] ERROR: Internal Server Error: 
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/web/main.py", line 497, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/web/main.py", line 233, in dispatch
    content_type)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/web/chrome.py", line 1015, in render_template
    encoding='utf-8')
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 184, in render
    return encode(generator, method=method, encoding=encoding, out=out)
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/output.py", line 58, in encode
    for chunk in iterator:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/output.py", line 350, in __call__
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/output.py", line 829, in __call__
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/output.py", line 669, in __call__
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/output.py", line 774, in __call__
    for kind, data, pos in chain(stream, [(None, None, None)]):
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/output.py", line 594, in __call__
    for ev in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 289, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 289, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/web/chrome.py", line 1152, in _strip_accesskeys
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 289, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/web/chrome.py", line 1141, in _generate
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 289, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 289, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/filters/transform.py", line 706, in _unmark
    for mark, event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/filters/transform.py", line 1195, in __call__
    for mark, (kind, data, pos) in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/filters/transform.py", line 1195, in __call__
    for mark, (kind, data, pos) in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/filters/transform.py", line 734, in __call__
    for mark, event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/filters/transform.py", line 702, in _mark
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 618, in _include
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/markup.py", line 378, in _match
    ctxt, start=idx + 1, **vars):
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/markup.py", line 378, in _match
    ctxt, start=idx + 1, **vars):
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/markup.py", line 362, in _match
    content = list(content)
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 618, in _include
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/markup.py", line 326, in _match
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/markup.py", line 315, in _strip
    event = next()
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 558, in _flatten
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 289, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/path.py", line 588, in _generate
    subevent = next()
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 618, in _include
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/markup.py", line 315, in _strip
    event = next()
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 558, in _flatten
    for kind, data, pos in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/core.py", line 289, in _ensure
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/path.py", line 588, in _generate
    subevent = next()
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 618, in _include
    for event in stream:
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/markup.py", line 315, in _strip
    event = next()
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 578, in _flatten
    result = _eval_expr(data, ctxt, vars)
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/base.py", line 289, in _eval_expr
    retval = expr.evaluate(ctxt)
  File "/usr/lib/python2.6/site-packages/Genshi-0.7-py2.6-linux-x86_64.egg/genshi/template/eval.py", line 177, in evaluate
    return eval(self.code, _globals, {'__data__': data})
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/versioncontrol/templates/changeset.html", line 160, in <Expression u'wiki_to_html(context, changeset.message, escape_newlines=True)'>
    ${wiki_to_html(context, changeset.message, escape_newlines=True)}
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/wiki/formatter.py", line 1546, in format_to_html
    return HtmlFormatter(env, context, wikidom).generate(escape_newlines)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/wiki/formatter.py", line 1501, in generate
    escape_newlines)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/wiki/formatter.py", line 1283, in format
    result = re.sub(self.wikiparser.rules, self.replace, line)
  File "/usr/lib64/python2.6/re.py", line 151, in sub
    return _compile(pattern, 0).sub(repl, string, count)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/wiki/formatter.py", line 1201, in replace
    replacement = self.handle_match(fullmatch)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/wiki/formatter.py", line 1194, in handle_match
    return external_handler(self, match, fullmatch)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/versioncontrol/web_ui/changeset.py", line 1060, in <lambda>
    y, z))
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/versioncontrol/web_ui/changeset.py", line 1084, in _format_changeset_link
    reponame = rm.get_default_repository(formatter.context)
  File "/usr/lib/python2.6/site-packages/Trac-1.0.1-py2.6.egg/trac/versioncontrol/api.py", line 588, in get_default_repository
    return context.resource.parent.id
AttributeError: 'NoneType' object has no attribute 'id'

Changesets that don't contain a revision TracLink have no issue loading. When I set traclinks.textbox.textbox = disabled in my trac.ini, the issue goes away.

[matobaa]

In 13388:

TracLinksPlugin: refs #11324 Quick hacked to avoid error, not fixed yet

[matobaa]

In 13402:

TracLinksPlugin: fixes #11324

[matobaa]

Thank you for your kind report!