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Tim Wicks
12,144 PointsCannot get correct average following instructions
using instructions I cannot get correct average - it would be great to have an output field so we can debug in this situations.
from django.db.models import Avg
from rest_framework import serializers
from . import models
class GameSerializer(serializers.ModelSerializer):
average_score = serializers.SerializerMethodField()
def get_average_score(self, data):
agg = models.Game.scores.all().aggregate(average_score=Avg('score'))
return agg['average_score']
class Meta:
fields = ('id', 'name', 'average_score')
model = models.Game
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