How can I add field to request body in django middleware - django

Question

I want to add new field in request body in middleware and use it in views.
I googled it but the results was not worked.
How can I do it?
Django v2 python 3.6

Answer 1

You need to add a separate custom middleware which will process the request before landing to a particular view. Below is the code for custom middleware:
class ProcessRequestMiddleware(MiddlewareMixin):
"""
This middleware appends new payload in request body
"""
def process_view(self, request, view_func, *view_args, **view_kwargs):
request_data = getattr(request, '_body', request.body)
request_data = json.loads(request_data)
# here you can write the logic to append the payload to request data
request._body = json.dumps(request_data)
return None
Note - The middleware was place inside an app common (common/middleware/custommiddleware.py)
Now add this middleware to settings.MIDDLEWARE list:
"common.middleware.custommiddleware.ProcessRequestMiddleware"
Now you can retrieve the payload, which you had appended in custommiddleware, inside any of the views you want by just calling the json.loads(request.body).

Answer 2

Try following code:
class SimpleMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
my_request = request.GET.copy()
my_request['foo']='bar'
request.GET = my_request
response = self.get_response(request)
return response
I tried this for you: added above code into: example.py Then added 'example.SimpleMiddleware', into MIDDLEWARE
My view method:
def index(request):
for key in request.GET:
print (key, '--->', request.GET[key])
return render(request, 'example.html')
able to print foo ---> bar browser sends the request.