Django REST Framework 基于类的视图继承答案

【问题标题】：Django REST Framework class-based views inheritanceDjango REST Framework 基于类的视图继承
【发布时间】：2020-09-28 07:11:27
【问题描述】：

我正在使用 Django REST Framework，发现自己处于以下情况：我有两个 APIViews，除了它们返回的对象的顺序之外，它们彼此相同：

# Route: "/new"
class NewView(APIView):
    """
    Returns JSON or HTML representations of "new" definitions.
    """
    renderer_classes = [JSONRenderer, TemplateHTMLRenderer]

    def get(self, request):

        # Queryset
        definitions = Definition.objects.filter(language=get_language())
        definitions = definitions.order_by("-pub_date")

        # HTML
        if request.accepted_renderer.format == "html":
            context = {}
            context["definitions"] = definitions
            context["tags"] = get_tags(definitions)
            return Response(context, template_name="dictionary/index.html")

        # JSON
        serializer = DefinitionSerializer(definitions, many=True)
        return Response(serializer.data)

# Route: "/random"
class RandomView(APIView):
    """
    Returns JSON or HTML representations of "random" definitions.
    """
    renderer_classes = [JSONRenderer, TemplateHTMLRenderer]

    def get(self, request):

        # Queryset
        definitions = Definition.objects.filter(language=get_language())
        definitions = definitions.order_by("?")

        # HTML
        if request.accepted_renderer.format == "html":
            context = {}
            context["definitions"] = definitions
            context["tags"] = get_tags(definitions)
            return Response(context, template_name="dictionary/index.html")

        # JSON
        serializer = DefinitionSerializer(definitions, many=True)
        return Response(serializer.data)

如您所见，这两个视图之间唯一改变的行是对Definition 对象排序的行。 如何创建包含共享代码的父视图和对对象进行排序的子视图？

【问题讨论】：

标签： django inheritance django-rest-framework django-views

【解决方案1】：

class BaseView(APIView):
    order_field = None
    """
    Returns JSON or HTML representations of "new" definitions.
    """
    renderer_classes = [JSONRenderer, TemplateHTMLRenderer]

    def get(self, request):

        # Queryset
        definitions = Definition.objects.filter(language=get_language())
        definitions = definitions.order_by(self.order_field)

        # HTML
        if request.accepted_renderer.format == "html":
            context = {}
            context["definitions"] = definitions
            context["tags"] = get_tags(definitions)
            return Response(context, template_name="dictionary/index.html")

        # JSON
        serializer = DefinitionSerializer(definitions, many=True)
        return Response(serializer.data)


class RandomView(BaseView):
    order_field = "?"


class NewView(BaseView):
    order_field = "-pub_date"

【讨论】：