Adding field that isn't in model to serializer in Django REST framework

Question

I have a model Comment that when created may or may not create a new user. For this reason, my API requires a password field when creating a new comment. Here is my Comment

Answer 1

What you can do is to overwrite the pre_save or create function and take out the commenter_pw from the data fields that are sent (not sure, but you can probably take it out form request.POST or after you have serialized it), so the framework should not rise the error.

Plus, if you have additional logic you can implement it there before saving it (such as the one for checking if the user have to be created or what).