配置admin時，產生'WSGIRequest' object has no attribute 'user'的錯誤
google了下，說是MIDDLEWARE配置的有問題，順序應該保持參見（http://stackoverflow.com/questions/26576192/wsgirequest-object-has-no-attribute-user）：
'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
但是這樣設置之后，依然沒有解決。
我的MIDDLEWARE的配置是：
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware', 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.SessionAuthenticationMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', ]
實際上，這是Django版本的問題，1.9之前，中間件的key為MIDDLEWARE_CLASSES, 1.9之后，為MIDDLEWARE。所以在開發環境和其他環境的版本不一致時，要特別小心，會有坑。
改配置為：
MIDDLEWARE_CLASSES = [
'django.middleware.security.SecurityMiddleware', 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.SessionAuthenticationMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', ]
問題解決。
參考 http://www.ziqiangxuetang.com/django/django-middleware.html