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Christopher Shaw
Python Web Development Techdegree Graduate 58,236 PointsNot sure how to solve the challenge.
No matter what I try, I keep getting 'Didn't get the right average for the game' Kenneth Love
from django.db.models import Avg
from rest_framework import serializers
from . import models
class GameSerializer(serializers.ModelSerializer):
average_score = serializers.SerializerMethodField()
class Meta:
fields = ('id', 'name', 'average_score')
model = models.Game
def get_average_rating(self, obj):
average = Game.objects.all().aggregate(Avg('scores')).get('scores__avg')
if average is None:
return 0
return average
class PlayerSerializer(serializers.ModelSerializer):
class Meta:
fields = ('id', 'name', 'age', 'parent_approval')
model = models.Player
def validate(self, data):
if data['age'] < 13 and not data['parent_approval']:
raise serializers.ValidationError(
"Children under 13 require parental approval"
)
return data
class ScoreSerializer(serializers.ModelSerializer):
game = serializers.HyperlinkedRelatedField(
read_only=True, view_name='apiv2:game-detail')
player = serializers.HyperlinkedRelatedField(
read_only=True, view_name='apiv2:player-detail')
class Meta:
fields = ('id', 'game', 'player', 'score')
model = models.Score
1 Answer

Kenneth Love
Treehouse Guest TeacherYour field and method names have to match up, with the method name having get_
on the front of it.
Christopher Shaw
Python Web Development Techdegree Graduate 58,236 PointsChristopher Shaw
Python Web Development Techdegree Graduate 58,236 PointsThanks, that put me on the right track and quickly solved it once I had corrected the method name.