Admin incompatible with USE_ETAGS = True

[Chris Lamb]

In SVN, the admin does not work with USE_ETAGS = True:

Environment:

Traceback:
File "/srv/www.example.com/example/packages/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/srv/www.example.com/example/packages/django/contrib/admin/sites.py" in wrapper
  213.                 return self.admin_view(view, cacheable)(*args, **kwargs)
File "/srv/www.example.com/example/packages/django/utils/decorators.py" in _wrapped_view
  91.                     response = view_func(request, *args, **kwargs)
File "/srv/www.example.com/example/packages/django/views/decorators/cache.py" in _wrapped_view_func
  77.         response = view_func(request, *args, **kwargs)
File "/srv/www.example.com/example/packages/django/contrib/admin/sites.py" in inner
  196.             return view(request, *args, **kwargs)
File "/srv/www.example.com/example/packages/django/views/decorators/cache.py" in _wrapped_view_func
  78.         add_never_cache_headers(response)
File "/srv/www.example.com/example/packages/django/utils/cache.py" in add_never_cache_headers
  116.     patch_response_headers(response, cache_timeout=-1)
File "/srv/www.example.com/example/packages/django/utils/cache.py" in patch_response_headers
  105.         response['ETag'] = '"%s"' % hashlib.md5(response.content).hexdigest()
File "/srv/www.example.com/example/packages/django/template/response.py" in _get_content
  110.             raise ContentNotRenderedError('The response content must be rendered before it can be accessed.')

Exception Type: ContentNotRenderedError at /a/admin/
Exception Value: The response content must be rendered before it can be accessed.

[Karen Tracey]

Fixed formatting, please use preview. I suspect this is due to r16087. It does not happen with 1.3 release. There's also a likely-related thread on django-developers: ​http://groups.google.com/group/django-developers/browse_thread/thread/f96e982254fbe5c3