I just looked over your model again. Your save() override has a super(Screens,...) reference, which doesn't match the model class.
That may explain why you are getting the invalid parameters error, since you are probably calling the wrong save function from a different class. I'd remove that save() override entirely. -James Just to add, if I use a curl request curl -H "Authorization: Bearer $usertoken" -H "Content-Type: application/json" -X POST -d '{"user":"foo1","stock":"XYZ","prefs":"Likes"}' http://${endpoint}/addPrefs I get a error: {"prefs":["\"Likes\" is not a valid choice."]} If I use curl -H "Authorization: Bearer $usertoken" -H "Content-Type: application/json" -X POST -d '{"user":"foo1","stock":"XYZ","prefs":"1"}' http://${endpoint}/addPrefs I get the above trace. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/7ca2a02f-596e-40da-9a16-2b2011871e02%40googlegroups.com <https://groups.google.com/d/msgid/django-users/7ca2a02f-596e-40da-9a16-2b2011871e02%40googlegroups.com?utm_medium=email&utm_source=footer> . For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CA%2Be%2BciVMY4FmpfrSoZEG8njPj%2B%3DJiTjMSAPK9YXPCyXUQyiJGA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.