Question

我正在编写一个小型应用程序。我将有两个端点：

/ generate-仅接受POST
/ exercise-它具有GET和PUT

我有以下模型：

class Exercise(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    question = models.TextField(default='')
    answered = models.BooleanField(default=False)
    answer = models.TextField(default='',blank=True)

    class Meta:
        ordering = ['created']

    def __str__(self):
        return self.question

这是我想在每个端点上做的简单事情。

在/ generate POST上-在db中生成10个练习

在/ exercise GET上-返回未回答的问题
  在/ exercise PUT上-更新“仅答案”并设置“已回答”字段。

这是我的序列化器

# snippets/serializers
from rest_framework import serializers
from .models import Exercise

class ExerciseSerializer(serializers.ModelSerializer):
    class Meta:
        model = Exercise
        fields = ('id', 'question', 'answer')


class GenerateSerializer(serializers.ModelSerializer):
    class Meta:
        pass
        model = None
        model = Exercise
        exercise = Exercise()
        fields = ('id', 'question', 'answer')

最后查看：

from django.shortcuts import render

# Create your views here.

# snippets/views.py
from rest_framework import generics
from .models import Exercise
from .serializers import ExerciseSerializer, GenerateSerializer


class ExerciseList(generics.ListAPIView):
    queryset = Exercise.objects.all()
    serializer_class = ExerciseSerializer


class ExerciseDetail(generics.RetrieveUpdateAPIView):
    queryset = Exercise.objects.all()
    serializer_class = ExerciseSerializer

class GenerateExercise(generics.CreateAPIView):
    # TODO: check if I need query set for create only method
    # queryset = Exercise.objects.all()
    serializer_class = GenerateSerializer

    def perform_create(self, serializer): # new
        for i in range(10):
            serializer.save(question="{} + {} = ".format(i, i+1), answer=str(i+i+1))

当我运行/ generate时，我只有一个练习写入db。知道为什么吗？其次，这是正确的方法吗？

Django创建未定义模型的数据库条目

0 个答案: