I had also noticed that errors from templates were quite hard to debug. Some time ago I saw this thread on on this group:
http://groups.google.com/group/django-users/browse_thread/thread/ee29c542dcc0dc95/aaa3f89a2a77fa3f?lnk=gst&q=template_debug#aaa3f89a2a77fa3f I applied the very simple patch, which is listed in http://code.djangoproject.com/ticket/11451 (Here's my own notes on what the patch is) File: /site-packages/django/template/debug.py # raise wrapped # remove this line, add next line, see ticket 11451 raise wrapped, None, wrapped.exc_info[2] After applying this patch I found the the traceback errors made much more sense. The tracebacks are complete now and point me to a line that is meaningful. I believe this is some sort of issue only with python 2.6, so if you are not on 2.6, it is probably not a solution for you, but if you are on 2.6, give it a try. Margie On Jan 4, 9:08 am, Thomas Steinacher <t...@eggdrop.ch> wrote: > The actual error is not my point. I know that it's somewhere in a > reverse/url method, but there is no way I can test it. The point is > that there is no helpful template traceback in the deployment error e- > mails. Maybe I should direct this to django-developers instead or file > a ticket? > > On Jan 4, 6:05 pm, Victor Loureiro Lima <victorloureirol...@gmail.com> > wrote: > > > You are probably calling {{ model.property.url }} or {{ > > model.get_absolute_url }} on some property/model (either FileField or > > ImageField in case of property) of some model of yours that doesnt know how > > to reverse back to its URL, so the template gives an error because it doesnt > > know how to render its own value. You should check if the models is correct > > and if its possible to access it thru the regex of URL. > > > Maybe if you iterate thru all objects trying to get_absolute_url them you > > could reproduce some sort of error. > > > That would be my guess =) > > > Victor Lima > > > 2010/1/4 Thomas Steinacher <t...@eggdrop.ch> > > > > Hey guys, > > > > I sometimes get errors which occur rarely, so it is very difficult to > > > reproduce them in a development environment. The traceback always > > > looks similar to the traceback attached below (which is just an > > > example). > > > > My question: How can I make the Django error mails show the template > > > file name and line number where the error occurred? It is really > > > annoying as I currently see no way to debug this type of errors other > > > than guessing, which is very difficult, especially when templates are > > > very complex. > > > > Thanks, > > > > Thomas > > > > File "/home/mysite/django-mysite3/django/template/loader.py", line > > > 173, in render_to_string > > > return t.render(context_instance) > > > > File "/home/mysite/django-mysite3/django/template/__init__.py", line > > > 184, in render > > > return self._render(context) > > > > File "/home/mysite/django-mysite3/django/template/__init__.py", line > > > 178, in _render > > > return self.nodelist.render(context) > > > > File "/home/mysite/django-mysite3/django/template/__init__.py", line > > > 787, in render > > > bits.append(self.render_node(node, context)) > > > > File "/home/mysite/django-mysite3/django/template/__init__.py", line > > > 800, in render_node > > > return node.render(context) > > > > File "/home/mysite/django-mysite3/django/template/defaulttags.py", > > > line 384, in render > > > raise e > > > > NoReverseMatch: Reverse for 'view_user_pictures' with arguments '()' > > > and keyword arguments '{'username': ''}' not found. > > > > -- > > > > You received this message because you are subscribed to the Google Groups > > > "Django users" group. > > > To post to this group, send email to django-us...@googlegroups.com. > > > To unsubscribe from this group, send email to > > > django-users+unsubscr...@googlegroups.com<django-users%2bunsubscr...@google > > > groups.com> > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/django-users?hl=en. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
