How to correctly inherit custom serializer to add new field

[Kaushil Kundalia]

The code snippets are present here (gist link)

Here is my parent serializer:

Now, I want to add a new field "field_child_1" on a serializer that inherits from the ParentSerializer. I have tried 2 approaches yet both of them are throwing the same error. Here is what I have done:

Below is the error that I am facing:

Now my question is, how can I add new fields in my child serializer after inheriting from ParentSerializer.

Any help is sincerely appreciated and hope you have a great day ^_^

[Chetan Ganji]

This might help 

https://www.django-rest-framework.org/api-guide/serializers/#dynamically-modifying-fields

Regards,

Chetan Ganji

+91-900-483-4183

ganji....@gmail.com

http://ryucoder.in

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[Kaushil Kundalia]

Thanks for your help. With a little bit of modification, this approach worked.