gistfile1.txt

models.py

class TribualUserInTribe(models.Model):
    user = models.ForeignKey(TribualUser)
    tribe = models.ForeignKey(Tribe)
    #Unique together
    played = models.IntegerField(default=0)
    elo = models.IntegerField(default=2000,db_index=True)
    k = models.IntegerField(default=40)
    win = models.IntegerField(default=0)
    loose = models.IntegerField(default=0)
    draw = models.IntegerField(default=0)

    def get_tribe_id(self):
        return self.tribe.id

    def get_tribe_title(self):
        return self.tribe.title

serializer.py

class TribualUserInTribeSerializer(serializers.ModelSerializer):
    id = serializers.Field(source='get_tribe_id')
    title = serializers.Field(source='get_tribe_title')
    
    class Meta:
        model = TribualUserInTribe
        fields = ('id','title','elo')