每当在我的appengine项目中继承的Jinja2模板中出现错误时,我都会得到一个回溯,它只指定导致继承的行,而不是导致错误的行。在
例如,我用两个模板创建了一个虚拟项目,page.html
和base.html
。page.html
继承自base.html
,并且{base.html
中的错误,而是给我以下回溯:
Traceback (most recent call last):
File "/home/kkinder/Software/google_appengine/lib/webapp2/webapp2.py", line 1536, in __call__
rv = self.handle_exception(request, response, e)
File "/home/kkinder/Software/google_appengine/lib/webapp2/webapp2.py", line 1530, in __call__
rv = self.router.dispatch(request, response)
File "/home/kkinder/Software/google_appengine/lib/webapp2/webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "/home/kkinder/Software/google_appengine/lib/webapp2/webapp2.py", line 1102, in __call__
return handler.dispatch()
File "/home/kkinder/Software/google_appengine/lib/webapp2/webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "/home/kkinder/Software/google_appengine/lib/webapp2/webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "/home/kkinder/Projects/JinjaTestProject/main.py", line 11, in get
self.response.out.write(self.jinja2.render_template('page.html'))
File "/home/kkinder/Software/google_appengine/lib/webapp2/webapp2_extras/jinja2.py", line 158, in render_template
return self.environment.get_template(_filename).render(**context)
File "/home/kkinder/Software/google_appengine/lib/jinja2/jinja2/environment.py", line 894, in render
return self.environment.handle_exception(exc_info, True)
File "templates/page.html", line 1, in top-level template code
{% extends 'base.html' %}
UndefinedError: 'doesnotexist' is undefined
在主.py公司名称:
^{pr2}$在页面.html公司名称:
{% extends 'base.html' %}
{% block content %}
Stuff
{% endblock %}
在基本.html公司名称:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
</head>
<body>
<h1>{{ doesnotexist.foo }}</h1>
{% block content %}{% endblock %}
</body>
</html>
不幸的是,在生产中不可能获得关于GAE的Jinja2更好的调试信息,因为他们限制了对所需包的访问。您可以在官方的FAQ: My tracebacks look weird. What’s happening?上找到有关此问题的更多信息
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