game/views.py

models.py

from django.utils.translation import gettext_lazy as _

class Game(models.Model):
    
    TEEBALL_INTRODUCED_VERSION = "1.1.0"
    REVAMPED_PRODUCT_INTRODUCED_VERSION = "2.0.0"

    class GameType(models.TextChoices):
        BASEBALL = "BB", _("Baseball")
        SOFTBALL = "SB", _("Softball")
        TEEBALL = "TB", _("Tee-ball")

    type = models.CharField(
        max_length=2,
        choices=GameType.choices,
        default=GameType.BASEBALL,
    )

views.py

from rest_framework import viewsets
from semantic_version import SimpleSpec, Version

class GameViewSet(viewsets.ReadOnlyModelViewSet):
    """Game viewset."""

    queryset = Game.objects.all()
    serializer_class = GameSerializer

    def get_serializer_class(self):
        """Determine serializer class."""
        teeball_introduced = SimpleSpec(f">={Game.SOFTBALL_INTRODUCED_VERSION},<{Game.REVAMPED_PRODUCT_INTRODUCED_VERSION}")
        revamped_product_introduced = SimpleSpec(f">={Game.REVAMPED_PRODUCT_INTRODUCED_VERSION}")
        
        if teeball_introduced.match(Version(self.request.version)):
            return TeeBallSupportedGameSerializer
        elif revamped_product_introduced.match(Version(self.request.version)):
            return RevampedGameSerializer
        
        return GameSerializer