Sitemaps without lastmod dates are broken (Django 1.7 / master only)

[Matthias Kestenholz]

While running the FeinCMS testsuite with Django 1.7 / master, I found a new problem introduced by 8f5533ab250df07ea84f98d39808806e282468a5 (the fix for #20793).

Traceback (most recent call last):
  File "/home/mk/Projects/feincms/tests/testapp/tests/test_page.py", line 1428, in test_36_sitemaps
    response = self.client.get('/sitemap.xml')
  File "/home/mk/Projects/feincms/tests/.tox/py27-1.7.X/src/django/django/test/client.py", line 452, in get
    response = super(Client, self).get(path, data=data, **extra)
  File "/home/mk/Projects/feincms/tests/.tox/py27-1.7.X/src/django/django/test/client.py", line 279, in get
    return self.generic('GET', path, **r)
  File "/home/mk/Projects/feincms/tests/.tox/py27-1.7.X/src/django/django/test/client.py", line 341, in generic
    return self.request(**r)
  File "/home/mk/Projects/feincms/tests/.tox/py27-1.7.X/src/django/django/test/client.py", line 423, in request
    six.reraise(*exc_info)
  File "/home/mk/Projects/feincms/tests/.tox/py27-1.7.X/src/django/django/core/handlers/base.py", line 114, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/mk/Projects/feincms/tests/.tox/py27-1.7.X/src/django/django/contrib/sitemaps/views.py", line 15, in inner
    response = func(request, *args, **kwargs)
  File "/home/mk/Projects/feincms/tests/.tox/py27-1.7.X/src/django/django/contrib/sitemaps/views.py", line 75, in sitemap
    timegm(site.latest_lastmod.utctimetuple()))
AttributeError: 'NoneType' object has no attribute 'utctimetuple'

The attached patch ensures that site.latest_lastmod is only set if it actually is a datetime value. Test is included.

(PS: This is my 21. issue submitted to the Django bugtracker; I did not count patches but I would be a honor if someone could add me to the AUTHORS file. https://code.djangoproject.com/query?owner=mk / https://code.djangoproject.com/query?reporter=mk TIA :-)

[Simon Charette]

Patch looks good!

Please provide a new one with yourself added to the ​AUTHORS and I'll make sure to honor your request :)

[Matthias Kestenholz]

Add myself to authors

[Matthias Kestenholz]

Simon, thanks for the review. I added the AUTHORS change to 21112.patch.

[Simon Charette <charette.s@…>]

In f5f662fa5f4efd1f0fdd7901ed58c34f384af532:

Fixed #21112 -- Make sure sitemaps with no lastmod date work correctly.

Thanks to Matthias Kestenholz for the report and patch.