[英]customize serializer output in django rest
我想自定义序列化器的输出...我想向我的序列化器输出添加额外的字段。
我的模特:
class MatchupActivity(models.Model):
matchup_user = models.ForeignKey(MatchupUser)
question = models.ForeignKey(Question)
answer = models.ForeignKey(Answer)
points = models.PositiveIntegerField()
time = models.PositiveIntegerField() # in seconds
def __unicode__(self):
return u"%d - [%s]" % (self.id, self.matchup_user)
我的序列化器:
class MatchupActivitySerializer(serializers.Serializer):
"""
"""
url = serializers.HyperlinkedIdentityField(view_name='matchupactivity-detail')
question = serializers.HyperlinkedRelatedField(queryset=Question.objects.all(), view_name='question-detail')
answer = serializers.HyperlinkedRelatedField(queryset=Answer.objects.all(), view_name='answer-detail')
points = serializers.IntegerField(required=True)
time = serializers.IntegerField(required=True)
matchup = serializers.HyperlinkedRelatedField(queryset=Matchup.objects.all(), view_name='matchup-detail')
def to_native(self, obj):
if 'matchup' in self.fields:
self.fields.pop('matchup')
return super(MatchupActivitySerializer, self).to_native(obj)
def restore_object(self, attrs, instance=None):
request = self.context.get('request')
field = serializers.HyperlinkedRelatedField(queryset=Matchup.objects.all(), view_name='matchup-detail')
matchup = self.init_data['matchup']
matchup_user = MatchupUser.objects.get(matchup=field.from_native(matchup), user=request.user)
attrs['matchup_user'] = matchup_user
attrs.pop('matchup')
return MatchupActivity(**attrs)
我想要的是在显示MatchupActivity列表中时显示对战字段。 例:
目前的反应是这样的。
{
"url": "http://localhost:8000/matchup-activities/1/",
"question": "http://localhost:8000/questions/1/",
"answer": "http://localhost:8000/answers/1/",
"points": 1,
"time": 1
}
我想要回应就是这样。
{
"url": "http://localhost:8000/matchup-activities/1/",
"question": "http://localhost:8000/questions/1/",
"answer": "http://localhost:8000/answers/1/",
"points": 1,
"time": 1,
"matchup":{
#matchup related fields...
}
}
为MatchupUser模型编写一个单独的序列化器,而不要使用:
matchup = serializers.HyperlinkedRelatedField(queryset=Matchup.objects.all(), view_name='matchup-detail')
采用:
matchup = MatchupUserSerializer()
按照这里的指示
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