[python] How to disable Django's CSRF validation?

I have commented out csrf processor and middleware lines in settings.py:

122 
123 TEMPLATE_CONTEXT_PROCESSORS = (
124     'django.contrib.auth.context_processors.auth',
125 #    'django.core.context_processors.csrf',
126     'django.core.context_processors.request',
127     'django.core.context_processors.static',
128     'cyathea.processors.static',
129 )
130 
131 MIDDLEWARE_CLASSES = (
132     'django.middleware.common.CommonMiddleware',
133     'django.contrib.sessions.middleware.SessionMiddleware',
134 #    'django.middleware.csrf.CsrfViewMiddleware',
135     'django.contrib.auth.middleware.AuthenticationMiddleware',
136     'django.contrib.messages.middleware.MessageMiddleware',
137     'django.middleware.locale.LocaleMiddleware',
138     # Uncomment the next line for simple clickjacking protection:
139     # 'django.middleware.clickjacking.XFrameOptionsMiddleware',
140 )

But when I use Ajax to send a request, Django still respond 'csrf token is incorrect or missing', and after adding X-CSRFToken to headers, the request would succeed.

What is going on here ?

To disable CSRF for class based views the following worked for me.
Using django 1.10 and python 3.5.2

from django.views.decorators.csrf import csrf_exempt
from django.utils.decorators import method_decorator

@method_decorator(csrf_exempt, name='dispatch')
class TestView(View):
    def post(self, request, *args, **kwargs):
        return HttpResponse('Hello world')

The answer might be inappropriate, but I hope it helps you

class DisableCSRFOnDebug(object):
    def process_request(self, request):
        if settings.DEBUG:
            setattr(request, '_dont_enforce_csrf_checks', True)

Having middleware like this helps to debug requests and to check csrf in production servers.

For Django 2:

from django.utils.deprecation import MiddlewareMixin


class DisableCSRF(MiddlewareMixin):
    def process_request(self, request):
        setattr(request, '_dont_enforce_csrf_checks', True)

That middleware must be added to settings.MIDDLEWARE when appropriate (in your test settings for example).

Note: the setting isn't not called MIDDLEWARE_CLASSES anymore.

If you want disable it in Global, you can write a custom middleware, like this

from django.utils.deprecation import MiddlewareMixin

class DisableCsrfCheck(MiddlewareMixin):

    def process_request(self, req):
        attr = '_dont_enforce_csrf_checks'
        if not getattr(req, attr, False):
            setattr(req, attr, True)

then add this class youappname.middlewarefilename.DisableCsrfCheck to MIDDLEWARE_CLASSES lists, before django.middleware.csrf.CsrfViewMiddleware

CSRF can be enforced at the view level, which can't be disabled globally.

In some cases this is a pain, but um, "it's for security". Gotta retain those AAA ratings.

https://docs.djangoproject.com/en/dev/ref/csrf/#contrib-and-reusable-apps

The problem here is that SessionAuthentication performs its own CSRF validation. That is why you get the CSRF missing error even when the CSRF Middleware is commented. You could add @csrf_exempt to every view, but if you want to disable CSRF and have session authentication for the whole app, you can add an extra middleware like this -

class DisableCSRFMiddleware(object):

def __init__(self, get_response):
    self.get_response = get_response

def __call__(self, request):
    setattr(request, '_dont_enforce_csrf_checks', True)
    response = self.get_response(request)
    return response

I created this class in myapp/middle.py Then import this middleware in Middleware in settings.py

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

]

That works with DRF on django 1.11

In setting.py in MIDDLEWARE you can simply remove/comment this line:

'django.middleware.csrf.CsrfViewMiddleware',

If you just need some views not to use CSRF, you can use @csrf_exempt:

from django.views.decorators.csrf import csrf_exempt

@csrf_exempt
def my_view(request):
    return HttpResponse('Hello world')

You can find more examples and other scenarios in the Django documentation:

• https://docs.djangoproject.com/en/dev/ref/csrf/#edge-cases

@WoooHaaaa some third party packages use 'django.middleware.csrf.CsrfViewMiddleware' middleware. for example i use django-rest-oauth and i have problem like you even after disabling those things. maybe these packages responded to your request like my case, because you use authentication decorator and something like this.