python - how to setup custom middleware in django -

i trying create middleware optionally pass kwarg every view meets condition.

the problem cannot find example of how setup middleware. have seen classes override method want to, process_view:

class checkconditionmiddleware(object):       def process_view(self, request):            return none   

but put class? create middleware app , put class inside of , reference in settings.middleware ?

first: path structure

if don't have need create middleware folder within app following structure:

yourproject/yourapp/middleware 

the folder middleware should placed in same folder settings.py, urls, templates...

important: don't forget create __init__.py empty file inside middleware folder app recognize folder

second: create middleware

now should create file our custom middleware, in example let's supose want middleware filter users based on ip, create file called filter_ip_middleware.py inside middleware folder code:

class filteripmiddleware(object):     # check if client ip allowed     def process_request(self, request):         allowed_ips = ['192.168.1.1', '123.123.123.123', etc...] # authorized ip's         ip = request.meta.get('remote_addr') # client ip         if ip not in allowed_ips:             raise http403 # if user not allowed raise error         # if ip allowed don't        return none 

third: add middleware in our 'settings.py'

we need for:

• middleware_classes (django < 1.10)
• middleware (django >= 1.10)

inside settings.py , there need add our middleware (add in last position). should like:

middleware = ( #  before django 1.10 setting name 'middleware_classes'     'django.middleware.common.commonmiddleware',     'django.contrib.sessions.middleware.sessionmiddleware',     'django.middleware.csrf.csrfviewmiddleware',     'django.contrib.auth.middleware.authenticationmiddleware',     'django.contrib.messages.middleware.messagemiddleware',      # above django standard middlewares       # add here our custom middleware      'yourapp.middleware.filter_ip_middleware.filteripmiddleware' ) 

done ! every request every client call custom middleware , process custom code !