It looks like the basehandler.py defines 'uri_for' in the jinja2_factory
function (see my first post in this thread). However, the error_handler.py
does not define 'uri_for' and does not inherit from basehandler.
I am also new to webapp2/jinja2 so I am not sure where the 'uri_for'
definition should live so both handlers properly initialize.
On Thursday, January 16, 2014 10:17:09 PM UTC-8, timh wrote:
>
> So that part of it looks fine.
>
> The question is does your code that initialises the globals
>
> 'globals': {
> 'uri_for' : webapp2.uri_for
> },
>
>
> ever get called when it goes through this path, and if it doesn't maybe
> what is happening is webapp2 is now initialised (partly) in the 404 handler
> and not completing this initialisation correctly.
>
> Hence the error.
>
> I have never used webapp or webapp2 or jinja so I have no personal
> experience in this area, but the symptons really look like an incomplete
> initialisation.
>
> T
>
> On Friday, January 17, 2014 12:28:41 PM UTC+8, Jeff Potter wrote:
>>
>> Below is the log data from the 404 error
>>
>> Traceback (most recent call last):
>> File
>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>
>> line 1529, in __call__ rv = self.router.dispatch(request, response)
>> File
>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>
>> line 1265, in default_dispatcher route, args, kwargs = rv =
>> self.match(request)
>> File
>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>
>> line 1214, in default_matcher raise exc.HTTPNotFound()
>> HTTPNotFound: The resource could not be found.
>>
>> Never gets out of the webapp2.py to start anything. Any idea on what
>> needs to be done?
>>
>> On Thursday, January 16, 2014 3:41:39 PM UTC-8, timh wrote:
>>>
>>> Hi
>>>
>>> I would look at how you 404 handler is initialized and if it has
>>> different imports/initialization phases to your regular handler.
>>> My guess is something isn't being imported correctly.
>>>
>>> Are you using appengine_config.py for all your path setups and any
>>> global init ?
>>>
>>> T
>>>
>>> On Friday, January 17, 2014 1:55:52 AM UTC+8, Jeff Potter wrote:
>>>>
>>>> I am not seeing any "deadline exceeded error" during the instance
>>>> startup, but I was able to successfully reproduce this problem, steps
>>>> below.
>>>>
>>>> 1. Make sure no server instances are started in GAE (shutdown any
>>>> already running)
>>>> 2. Go to a page that does not exist in the app (i.e.
>>>> www.my-app.com/this-page-will-never-exist)
>>>> 3. Returns a 'Error 404: The resource could not be found' as expected.
>>>> Logs also show that this request "caused a new process to be started" as
>>>> expected.
>>>> 4. /taskqueue-send-mail/ is kicked off to send the admin an error email
>>>> ('send_mail_developer': True in config.py)
>>>> 5. Now go to any valid page on the app and I get "Error 500: 'uri_for'
>>>> is undefiend"
>>>>
>>>> *If the first request (which starts a new server instance) is a valid
>>>> page, then this error goes away.* I did the same steps above but
>>>> between number 1 and 2 I went to a valid page. I then went to an invalid
>>>> page and got the 404, but after that I did not get any 'uri_for' undefined
>>>> error.
>>>>
>>>> Any ideas?
>>>>
>>>> Thanks,
>>>> Jeff
>>>>
>>>> On Thursday, January 16, 2014 4:21:11 AM UTC-8, timh wrote:
>>>>>
>>>>> Check and see if you have had a deadline exceeded error during
>>>>> instance startup, prior to the instance exhibiting this problem.
>>>>>
>>>>> T
>>>>>
>>>>> On Wednesday, January 15, 2014 11:06:55 PM UTC+8, Jeff Potter wrote:
>>>>>>
>>>>>> I am having this problem with coto-boilerplate right now. Stacktrace
>>>>>> for the problem below. Stopping and starting a new instance fixes the
>>>>>> problem.
>>>>>>
>>>>>> Traceback (most recent call last):
>>>>>> File
>>>>>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>>>>>
>>>>>> line 1529, in __call__ rv = self.router.dispatch(request, response)
>>>>>> File
>>>>>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>>>>>
>>>>>> line 1278, in default_dispatcher return route.handler_adapter(request,
>>>>>> response)
>>>>>> File
>>>>>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>>>>>
>>>>>> line 1102, in __call__ return handler.dispatch()
>>>>>> File
>>>>>> "/base/data/home/apps/s~<site>/1-1.373006929445588669/boilerplate/lib/basehandler.py",
>>>>>>
>>>>>> line 88, in dispatch webapp2.RequestHandler.dispatch(self)
>>>>>> File
>>>>>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>>>>>
>>>>>> line 572, in dispatch return self.handle_exception(e, self.app.debug)
>>>>>> File
>>>>>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2.py",
>>>>>>
>>>>>> line 570, in dispatch return method(*args, **kwargs)
>>>>>> File
>>>>>> "/base/data/home/apps/s~<site>/1-1.373006929445588669/boilerplate/handlers.py",
>>>>>>
>>>>>> line 1526, in get return self.render_template('home.html', **params)
>>>>>> File
>>>>>> "/base/data/home/apps/s~<site>/1-1.373006929445588669/boilerplate/lib/basehandler.py",
>>>>>>
>>>>>> line 320, in render_template
>>>>>> self.response.write(self.jinja2.render_template(filename, **kwargs))
>>>>>> File
>>>>>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/webapp2-2.5.2/webapp2_extras/jinja2.py",
>>>>>>
>>>>>> line 158, in render_template return
>>>>>> self.environment.get_template(_filename).render(**context)
>>>>>> File
>>>>>> "/base/data/home/runtimes/python27/python27_lib/versions/third_party/jinja2-2.6/jinja2/environment.py",
>>>>>>
>>>>>> line 894, in render return self.environment.handle_exception(exc_info,
>>>>>> True)
>>>>>> File "boilerplate/templates/home.html", line 1, in top-level
>>>>>> template code {% extends base_layout %}
>>>>>> File "boilerplate/templates/base.html", line 40, in top-level
>>>>>> template code
>>>>>> File "boilerplate/templates/home.html", line 6, in block "canonical"
>>>>>> {% block canonical %}{{ uri_for("home") }}{% endblock %}
>>>>>> UndefinedError: 'uri_for' is undefined
>>>>>>
>>>>>> uri_for is defined in basehandler.py like so
>>>>>> def jinja2_factory(app):
>>>>>> j = jinja2.Jinja2(app)
>>>>>> j.environment.filters.update({
>>>>>> # Set filters.
>>>>>> # ...
>>>>>> })
>>>>>> j.environment.globals.update({
>>>>>> # Set global variables.
>>>>>> 'csrf_token': generate_csrf_token,
>>>>>> 'uri_for': webapp2.uri_for,
>>>>>> 'getattr': getattr,
>>>>>> })
>>>>>> j.environment.tests.update({
>>>>>> # Set test.
>>>>>> # ...
>>>>>> })
>>>>>> return j
>>>>>>
>>>>>> All the routes work perfectly fine until the instance gets into a
>>>>>> funky state where no uri_for call works (seen it for other uris as well).
>>>>>>
>>>>>> any ideas?
>>>>>>
>>>>>> On Monday, July 16, 2012 12:34:35 AM UTC-7, Thomas Marban wrote:
>>>>>>>
>>>>>>>
>>>>>>> Ever since including webapp2.uri_for in my webapp2_extras.jinja2
>>>>>>> config via
>>>>>>>
>>>>>>> 'globals': {
>>>>>>> 'uri_for' : webapp2.uri_for
>>>>>>> },
>>>>>>>
>>>>>>> I'm getting an undefined error every time I change a python file
>>>>>>> and load the app for the first time. It won't come up on subsequent
>>>>>>> requests. Also tried to inject it into globals via a Jinja2 factory but
>>>>>>> same result. Any hints?
>>>>>>>
>>>>>>> UndefinedError: 'uri_for' is undefined
>>>>>>>
>>>>>>>
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