id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
18225	Staticfiles template tag does not fail silently	Bouke Haarsma	Moritz Sichert	"Last night we had a major outage on our site, due to a missing static file. We used `{% static 'css/fancybox.jquery.css' %}` in our base template, but that file had gone missing. As there were some caches involved, the problem presented only a few hours later when the caches expired. From what I understand is that template tags should fail silently as per the docs:
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> render() should never raise TemplateSyntaxError or any other exception. It should fail silently, just as template filters should.
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So I was surprised that instead of failing silently, the template tag raised an exception (and brought the whole site to a stop). I think the template tag should fail silently instead of raising the exception.

{{{
 File ""app/local/lib/python2.7/site-packages/django/core/handlers/base.py"", line 136, in get_response
   response = response.render()

 File ""app/local/lib/python2.7/site-packages/django/template/response.py"", line 104, in render
   self._set_content(self.rendered_content)

 File ""app/local/lib/python2.7/site-packages/django/template/response.py"", line 81, in rendered_content
   content = template.render(context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 140, in render
   return self._render(context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 134, in _render
   return self.nodelist.render(context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 823, in render
   bit = self.render_node(node, context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 837, in render_node
   return node.render(context)

 File ""app/local/lib/python2.7/site-packages/django/template/loader_tags.py"", line 123, in render
   return compiled_parent._render(context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 134, in _render
   return self.nodelist.render(context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 823, in render
   bit = self.render_node(node, context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 837, in render_node
   return node.render(context)

 File ""app/local/lib/python2.7/site-packages/django/template/base.py"", line 1107, in render
   return func(*resolved_args, **resolved_kwargs)

 File ""app/local/lib/python2.7/site-packages/django/contrib/staticfiles/templatetags/staticfiles.py"", line 13, in static
   return staticfiles_storage.url(path)

 File ""app/config/storages.py"", line 40, in url
   url = super(StaticStorage, self).url(name, force)

 File ""app/local/lib/python2.7/site-packages/django/contrib/staticfiles/storage.py"", line 114, in url
   hashed_name = self.hashed_name(clean_name).replace('\\', '/')

 File ""app/local/lib/python2.7/site-packages/django/contrib/staticfiles/storage.py"", line 74, in hashed_name
   (clean_name, self))

ValueError: The file 'styles/jquery.fancybox.css' could not be found with <config.storages.StaticStorage object at 0x36fee90>.
}}}"	Bug	closed	contrib.staticfiles	1.4	Normal	wontfix		moritz.sichert@…	Accepted	1	0	0	0	1	0