python - Django Rest Set some new value on django view on Post -

my form post data db.

i want add 1 filed hidden in view , should generate key random.

my post function is

        def post(self, request, format=none):             request.data['code'] = id_generator()             data = request.data             serializer = registrationform(data=data)             if serializer.is_valid():                 serializer.save()                 x=serializer.data                 data = { "ack":"success"}                 return response(data, status=status.http_201_created)             return response(serializer.errors, status=status.http_400_bad_request)  

here id_generator() genrate random values.

in serializer

class regiform(serializers.modelserializer):     code = serializers.charfield(read_only=true)      class  meta:         fields = ( 'mobile', 'profile_image', 'code')         model = registration 

so code filed not showing in api view , submitting form post code still empty

the problem setting read , docs says not able used set values:

set true ensure field used when serializing representation, not used when creating or updating instance during deserialization.

so if want hidden can use in charfield style tag allowed like: serializers.charfield(style={'input_type':'hidden'})

advice: should use hiddenfield instead of charfield hiddenfield takes value callable or default value seems want do.