On Mar 6, 10:40 am, bruno desthuilliers
<bruno.desthuilli...@gmail.com> wrote:
> On Mar 6, 7:07 am, Aryeh Leib Taurog <v...@aryehleib.com> wrote:
>
> > Sometimes self.get_another_object() returns an object which doesn't
> > have attribute 'x' so my_title() raises an AttributeError exception.
> > Under Django 1.2.4 the template renders as 'Generic Title,' but under
> > 1.3.1 I get a server error.
>
> Did you check the DEBUG and TEMPLATE_DEBUG flags in your settings ?
Actually that only seems to affect which exception class is raised
with django 1.3.x. Under django 1.2.x it doesn't have any effect. I
finally had a moment to put together the following script which
demonstrates the issue in isolation. Perhaps the 1.2.x behavior is
not "correct." Nonetheless, this is a very significant behavioral
change which broke at least one page (that I know of) on our
production site. I would expect it should be very clearly documented
somewhere.
# test.py --------------
import django
from django.conf import settings
from django.template import Context, Template
import sys
debug = ('debug' in sys.argv)
settings_dict = dict(DEBUG=debug, TEMPLATE_DEBUG=debug)
settings.configure(**settings_dict)
class Foo:
def no_exception(self):
return "Method"
def exception(self):
raise AttributeError
c = Context({"o": Foo()})
templates = ("{{ o.no_exception }}", "{{ o.exception }}")
print "Django version: %s" % django.get_version()
print "settings: %r" % settings_dict
try:
for ttext in templates:
t = Template(ttext)
print repr((ttext, t.render(c)))
except Exception, e:
print "Caught exception: %r" % e
# -------------
Here's what I get when I run this with different versions of django:
$ python test.py
Django version: 1.2.7
settings: {'DEBUG': False, 'TEMPLATE_DEBUG': False}
('{{ o.no_exception }}', u'Method')
('{{ o.exception }}', u'')
$ python test.py debug
Django version: 1.2.7
settings: {'DEBUG': True, 'TEMPLATE_DEBUG': True}
('{{ o.no_exception }}', u'Method')
('{{ o.exception }}', u'')
$ python test.py
Django version: 1.3
settings: {'DEBUG': False, 'TEMPLATE_DEBUG': False}
('{{ o.no_exception }}', u'Method')
Caught exception: AttributeError()
$ python test.py debug
Django version: 1.3
settings: {'DEBUG': True, 'TEMPLATE_DEBUG': True}
('{{ o.no_exception }}', u'Method')
Caught exception: TemplateSyntaxError(u'Caught AttributeError while
rendering: ',)
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