如何在 Django 休息框架 api 中的对象内有一个数组

Question

我想创建这种 API Django:

 {
    question_no: "1",
    question: "How many sides are equal in a scalene triangle?",
    options:    [
        { answer_options: "3", selected: false, isCorrect: true },
        { answer_options: "2", selected: false, isCorrect: false},
        { answer_options: "0", selected: false, isCorrect: false},
        { answer_options: "1", selected: false, isCorrect: false},
    ],
},

但我不知道如何在 Django 休息框架中的 API 中添加 options 数组。

这是我到目前为止创建的模型，但它只包含 question_no 和 question:

class quiz(models.Model):
    question_no = models.IntegerField()
    question = models.CharField(max_length=400)

如何在我的模型中添加选项数组？

Answer 1

如果您有 options 的模型，您可以像这样使用嵌套序列化器来做到这一点：

class OptionSerializer(serializers.ModelSerializer):
    class Meta:
        model = Option
        fields = ('answer_options', 'selected', 'isCorrect', )

class QuizSerializer(serializers.ModelSerializer):
    options = OptionSerializer(many=True)
    class Meta:
        model = Quiz
        fields = ('question_no', 'question', 'options', )

如果您没有任何模型，您可以像这样使用 SerializerMethodField：

class QuizSerializer(serializers.ModelSerializer):
    options = SerializerMethodField(method_name=get_options)

    class Meta:
        model = Quiz
        fields = ('question_no', 'question', 'options', )

    def get_options(self, obj):
        # now you should get your list of options somehow, for example get it from object:
        # options = obj.get_options()
        # for simplicity, I just statically created options list:
        options = [
            { answer_options: "3", selected: False, isCorrect: True },
            { answer_options: "2", selected: False, isCorrect: False},
            { answer_options: "0", selected: False, isCorrect: False},
            { answer_options: "1", selected: False, isCorrect: False},
        ]
        return options

如何在 Django 休息框架 api 中的对象内有一个数组

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python

django

django-rest-framework