Django rest_framework custom error message

Question

I have a API endpoint where it will do input validation using rest_framework\'s serializer.is_valid() where it will return custom error message and response.

Answer 1

A simple way is to use one of the exception messages, eg NotFound. See docs

# views.py
from rest_framework.exceptions import NotFound

class myview(viewsets.ModelViewSet):
    def perform_create(self, serializer):
        raise NotFound("My text here")

That will return a 404 and change the response to your text

HTTP 404 Not Found
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept
{
    "detail": "my text here"
}