Inherit kwargs from source modelfield

[lukaszett]

Hey everyone,

I'm using a custom ModelSerializer that aliases some attributes to different names (in my case I'm using it to provide custom endpoints for different customers).

Think of the following

from django.db import models

class Foo(models.Model):
  name = models.CharField(max_length = 8)

this is my serializer:

from rest_framework import serializers

from app.models import Foo

class FooSerializer(serializers.ModelSerializer):
  bar = serializers.CharField(source="name")

  class Meta:
    model = Foo
    fields = ["bar"]

My naive expectation would be that any validators for Foo.name (such as max length or any custom validators) and the required attribute would also be applied to the serializer's field. However this is currently not the case. I'm solving this issue by just defining my own get_fields method which updates any fields that have a source set, to use the model's fields setting regarding validators and requiredness.

Is that a behaviour that would be desirable to have in DRF?