Django分页，下一个，上一个，计数 [英] Django pagination with next, previous, count

问题描述

我正在尝试通过此链接进行分页和阅读.

I am trying to do for pagination and reading through this link.

使用API​​-View在Django-Rest-Framework中进行分页

我需要具有下一个先前的分页网址.问题是当我称这个为

I need to have next, previous url for pagination. Problem is that when I call this one,

pagination_class = settings.DEFAULT_PAGINATION_CLASS

说

设置"对象没有属性"DEFAULT_PAGINATION_CLASS"

我需要导入什么?或安装?

What do I need to import? or install ?

Models.py

Models.py

class CarView(APIView):
permission_classes = ()

def get(self, request):
    """ Get all car """
    car = Car.objects.all()
    # paginator = PageNumberPagination()

    serializer = CarSerializer(car)
    serialized_car = CarSerializer(car, context={"request": request})
    # serializer = CarSerializer(car[0])
    return Response(serialized_car.data)

Serializers.py

Serializers.py

class CarSerializer(serializers.ModelSerializer):

photo_url = serializers.SerializerMethodField('get_photo_url')

class Meta:
    model = Car
    fields = ('id','name','price', 'photo_url') 

def get_photo_url(self, car):
    request = self.context.get('request')
    photo_url = car.photo.url
    return request.build_absolute_uri(photo_url)

settings.py

settings.py

REST_FRAMEWORK = {

'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
'PAGE_SIZE': 100,

'DEFAULT_AUTHENTICATION_CLASSES':
    ('rest_framework.authentication.OAuth2Authentication',
     'rest_framework.authentication.SessionAuthentication'),

'DEFAULT_MODEL_SERIALIZER_CLASS':
    'rest_framework.serializers.ModelSerializer',

'DEFAULT_PERMISSION_CLASSES':
('rest_framework.permissions.IsAdminUser',)

}

推荐答案

您的设置文件未包含DEFAULT_PAGINATION_CLASS的定义，但确实包含了REST_FRAMEWORK的定义，并且DEFAULT_PAGINATION_CLASS是其中的一部分.

Your settings file doesn't include a definition for DEFAULT_PAGINATION_CLASS, it does include a definition for REST_FRAMEWORK, and DEFAULT_PAGINATION_CLASS is part of it.

有关访问 Django Rest Framework 文档.django-rest-framework.org/api-guide/settings/#accessing-settings"rel =" nofollow>设置

From Django Rest Framework documentation on accessing settings

访问设置

如果您需要访问REST的值 项目中框架API的设置，您应该使用 api_settings对象.例如.

If you need to access the values of REST framework's API settings in your project, you should use the api_settings object. For example.

from rest_framework.settings import api_settings
print api_settings.DEFAULT_AUTHENTICATION_CLASSES

api_settings对象将检查是否有任何用户定义的设置，并且 否则倒下 回到默认值.任何使用字符串导入路径的设置 引用一个类将自动导入并返回 引用的类，而不是字符串文字.

The api_settings object will check for any user-defined settings, and otherwise fall back to the default values. Any setting that uses string import paths to refer to a class will automatically import and return the referenced class, instead of the string literal.

您应该可以访问api_settings.DEFAULT_PAGINATION_CLASS

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