'WSGIRequest' object has no attribute 'session' while upgrading from django 1.3 to 1.9

Question

Similar to this question 'WSGIRequest' object has no attribute 'session'

But my MIDDLEWARE classes are in the correct order.

INSTALLED_APPS = [
    'django.contrib.sessions',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'membership',
    'treebeard',
    'haystack',
    'reversion',
]

MIDDLEWARE = [
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

I am redirecting to login

url(r'^$',  RedirectView.as_view(url='login/')),
url(r'^login/$', 'membership.views.loginView', name='login'),

and then

def loginView(request):
    a = request.session

Throws the error

Answer 1

MIDDLEWARE is a new setting in 1.10 that will replace the old MIDDLEWARE_CLASSES.

Since you're currently on 1.9, Django doesn't recognize the MIDDLEWARE setting. You should use the MIDDLEWARE_CLASSES setting instead:

MIDDLEWARE_CLASSES = [
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]