Exception raised when no content type set: "Error in formatting: KeyError: u'content-type'"

[JoeJasinski]

Hi,

When the content-type is not available in the response, the following exception is raised. I encounter this error when serving up static media with django-filer, but it looks like this could happen in any case where the request['Content-Type'] is not present.

`
Environment:

Request Method: GET
Request URL: http://localhost:8000/media/filer_public/df/66/df664fc4-d8a6-4d88-8aef-7be5e3aef32a/chipy-05-chicago_flag_python_logo-01.jpg

Django Version: 1.9.4
Python Version: 2.7.9
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.sitemaps',
'djangocms_admin_style',
'django.contrib.admin',
'easy_thumbnails',
'mptt',
'filer',
'nocaptcha_recaptcha',
'cms',
'treebeard',
'menus',
'sekizai',
'reversion',
'sorl.thumbnail',
'django_extensions',
'pagefeature',
'contact_form',
'photo_gallery.apps.PhotoConfig',
'djangocms_inherit',
'djangocms_teaser',
'djangocms_link',
'djangocms_snippet',
'djangocms_text_ckeditor',
'djangocms_plain_text')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'htmlmin.middleware.HtmlMinifyMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.middleware.locale.LocaleMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'cms.middleware.user.CurrentUserMiddleware',
'cms.middleware.page.CurrentPageMiddleware',
'cms.middleware.toolbar.ToolbarMiddleware',
'cms.middleware.language.LanguageCookieMiddleware',
'htmlmin.middleware.MarkRequestMiddleware')

Traceback:

File "/Users/jjasinski/Sites/joejasinski/envs/joejasinski/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response

1.             response = middleware_method(request, response)
   

File "/mysite/mysite/envs/mysite/lib/python2.7/site-packages/htmlmin/middleware.py" in process_response

1.     if minify and self.can_minify_response(request, response):
   

File "/mysite/envs/mysite/lib/python2.7/site-packages/htmlmin/middleware.py" in can_minify_response

1.     resp_ok = 'text/html' in response['Content-Type']
   

File "/mysite/envs/mysite/lib/python2.7/site-packages/django/http/response.py" in getitem

1.     return self._headers[header.lower()][1]
   

Exception Type: KeyError at /media/filer_public/df/66/df664fc4-d8a6-4d88-8aef-7be5e3aef32a/chipy-05-chicago_flag_python_logo-01.jpg
Exception Value: 'content-type'
`

[atten]

I also viewed this bug while requesting files from MEDIA_URL with DEBUG=True.
It looks like you need to add additional check for existence 'Content-Type' in response (htmlmin/middleware.py:32).

[andrewsmedina]

released in 0.9.1 :)