DRF_fields.md

Static fields (as class properties)

class UserSerializer(serializers.Serializer):
  email = serializers.EmailField()
  name = serializers.CharField()

Dynamic fields (overriding fields property)

class UserSerializer(serializers.Serializer):
  
  @property
  def fields(self):
    fields = get_fields(self)
    
  def get_fields(self):
    if self.instance:
      # ... figure out how to get the fields here
    else:
      # good luck trying to fetch the fields!
      
    return {
      "email": serializers.EmailField(),
      "name": serializers.CharField()
    }