如何在 POST 请求中更改 JSON 响应结果 | DRF？

Question

我有点困惑，需要一些建议如何正确组织视图。在我的 Django REST Framework 项目中，我有非常简单的模型和序列化程序。

models.py：

class Article(models.Model):
    body = models.TextField()

serializers.py：

class ArticleSerializer(serializers.ModelSerializer):
    class Meta:
        model = Article
        fields = ('id', 'body')

假设我在数据库中有下一个数据：

ID | BODY
-------------------------------------------------------------
1  | Aki doing his homework about japanese robot in library.
2  | All chapters are accompanied by necessary links.
3  | Japanese robot Aki doing a lot of tasks.

现在我尝试通过POST 向ArticleFilterView 控制器发送JSON 请求：

curl -X POST -H "Content-Type: application/json" -d '[
{
    "first": ["Aki", "robot"], 
    "second": ["doing", "library"]
}]'

http://localhost:8000/api/article/filter/

如果任何文章在正文字段中包含“Aki”和“机器人”字样，我想将该文章添加到 JSON 响应中。同时我需要从文本中删除“doing”和“library”这两个词。

输入：

[{
    "fisrt": ["Aki", "robot"], 
    "second": ["doing", "library"]
}]

输出：

[
{"id": 1, "body": "Aki his homework about japanese robot in ."},
{"id": 3, "body": "Japanese robot Aki a lot of tasks."},
]

views.py：

class ArticleFilterView(APIView):
    parser_classes = (JSONParser,)

    def post(self, request, format=None):
        # some code
        return Response({'received data': request.data})

settings.py：

REST_FRAMEWORK = {
    'DEFAULT_RENDERER_CLASSES': (
        'rest_framework.renderers.JSONRenderer',
    ),
    'DEFAULT_PARSER_CLASSES': (
        'rest_framework.parsers.JSONParser',
    ),
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.AllowAny',
    ),
}

urls.py:（在settings.py文件所在的同一目录中）

urlpatterns = [
    path('api/', include('article.urls')),
]

文章/urls.py：

urlpatterns = [
    path(
        'article/filter/',
        ArticleFilterView.as_view(),
        name='article_filter',
    ),
]

Answer 1

我认为，这会奏效。 （我只提到逻辑，而不是确切的代码）

class ArticleFilterView(APIView):
    parser_classes = (JSONParser,)

    def post(self, request, format=None):
        # some code
        return_data = {}
        if first got a match:
            return_data.update({'received data': request.data[0]['first']})
        elif second got a match:
            return_data.update({'received data': request.data[0]['second']})
        return_data.update({"search_result":your_serch_result})
        return Response(data=return_data)

更新
视图的完整实现

from django.db.models import Q


class ArticleFilterView(APIView):
    parser_classes = (JSONParser,)

    def post(self, request, format=None):
        for key, value in request.data.items():
            my_filter = Q()
            for search in value:
                my_filter &= Q(body__icontains=search)
            queryset = Article.objects.filter(my_filter)
            if queryset.exists():
                serializer = ArticleSerializer(queryset, many=True)
                return_data = {
                    "search_result": serializer.data,
                    "input_data": {key: value}
                }
                return Response(data=return_data)
        return Response({"message": "No data found"})

但是，您的输入负载必须是 dict 之类的对象，

{
    "first": ["Aki", "robot"], 
    "second": ["doing", "library"]
}

UPDATE-2
把views.py改成，

from django.db.models import Q


class ArticleFilterView(APIView):
    parser_classes = (JSONParser,)

    def post(self, request, format=None):
        my_filter = Q()
        for search in request.data.get('first'):
            my_filter &= Q(body__icontains=search)

            queryset = Article.objects.filter(my_filter)
            if queryset.exists():
                serializer = ArticleSerializer(queryset, many=True,context={"request":request})
                return_data = {
                    "search_result": serializer.data,
                    "input_data": {"first": request.data.get('first')}
                }
                return Response(data=return_data)
        return Response({"message": "No data found"})

和序列化程序，

class ArticleSerializer(serializers.ModelSerializer):
    class Meta:
        model = Article
        fields = ('id', 'body')

    def to_representation(self, instance):
        data = super().to_representation(instance)
        for input in self.context['request'].data.get('second'):
            data['body'] = data['body'].replace(input, "")
        return data