python - 如何为 Django REST Framework 正确定义模型/序列化器？

Question

我们正在使用此堆栈创建一个移动网络应用程序:

python Django，SQLite 数据库Django 休息 ionic Cordova 角度JS

这是一个测验应用程序，您可以在其中回答 4 个多项选择的问题。问题和答案存储在数据库中。在 REST 框架的帮助下创建了一个端点。

有了这个 JSON 文件，我们的 Angular JS Controller 异步工作。问题是在 model.py 中定义答案。它涉及数组中的数组。

我们正在尝试使用 Django REST 获取此结构:

[
    {
        "question" : "Java was originally developed at _______________",
        "answer"  : [
        {"id"  : 0, "text" : "Sun Microsystems"},
        {"id"  : 1, "text" : "Intel"},
        {"id"  : 2, "text" : "Hewlett-Packard"},
        {"id"  : 3, "text" : "Oracle"}
        ],
        "correct"  : 0
    },
]

这就是我们所拥有的:

[
    {
        "question": "Java was originally developed at _______________",
        "answer": [
            {
                "url": "http://127.0.0.1:8000/api/answer/1/",
                "answerid": 0,
                "text": "Sun Microsystems"
            },
            {
                "url": "http://127.0.0.1:8000/api/answer/2/",
                "answerid": 1,
                "text": "Intel"
            },
            {
                "url": "http://127.0.0.1:8000/api/answer/3/",
                "answerid": 2,
                "text": "Hewlett-Packard"
            },
            {
                "url": "http://127.0.0.1:8000/api/answer/4/",
                "answerid": 3,
                "text": "Oracle"
            }
        ],
        "correct": 0
    }
]

这是我们的 models.py:

from django.db import models

class Answer(models.Model):
    answerid = models.IntegerField()
    text = models.TextField()

class Question(models.Model):
    question = models.CharField(max_length=200)
    answer = models.ManyToManyField(Answer)
    correct = models.IntegerField()

序列化器:

from quiz.models import Question, Answer
from rest_framework import routers, serializers, viewsets

class AnswerSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Answer
        fields = ('answerid', 'text')

class QuestionSerializer(serializers.HyperlinkedModelSerializer):

    class Meta:
        model = Question
        fields = ('question', 'answer', 'correct')
        read_only_fields = ('answer',)
        depth = 1

# ViewSets define the view behavior.
class QuestionViewSet(viewsets.ModelViewSet):
    queryset = Question.objects.all()
    serializer_class = QuestionSerializer

class AnswerViewSet(viewsets.ModelViewSet):
    queryset = Answer.objects.all()
    serializer_class = AnswerSerializer

是否可以通过某种方式删除我们解决方案中的 url？

Answer 1

这些 url 是因为你继承了 HyperlinkedModelSerializer。

class QuestionSerializer(serializers.HyperlinkedModelSerializer):
    ...

如果您不需要它们，请使用不同的基类 - 也许只是一个 ModelSerializer .