serializers.py 文件源码

def get_satisfaction(self, obj):
        score = None
        if obj.type == USER_TYPE_DEVELOPER:
            score = obj.participation_set.filter(
                task__closed=True, status=STATUS_ACCEPTED
            ).aggregate(satisfaction=Avg('task__satisfaction'))['satisfaction']
            if score:
                score = '{:0,.0f}%'.format(score*10)
        return score