Django分页功能的使用和自定义分装

1. 在settings中进行注册

# drf配置
REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        # 'rest_framework_jwt.authentication.JSONWebTokenAuthentication',
        'rest_framework_simplejwt.authentication.JWTAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.BasicAuthentication',
    ),
    # 分页设置
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.LimitOffsetPagination',
    'PAGE_SIZE': 2
}

2. 在utils/myPagination.py中根据业务要求自定义分页返回结果

from collections import OrderedDict
 
from rest_framework.pagination import PageNumberPagination
from rest_framework.response import Response
 
 
class MyPageNumberPagination(PageNumberPagination):
    # 1. page_size_query_param默认为None，前端通过传入pagesize字段指定一页有多少数据
    page_size_query_param = 'pagesize'
    # 2. 限制最大页面数量，为了安全
    max_page_size = 100
 
    # 3. 重写响应值，根据前端想要的 响应字段
    def get_paginated_response(self, data):
        return Response(OrderedDict([
            ('page', self.page.number),
            ('pages', self.page.paginator.num_pages),
            ('lists', data)
        ]))

3. 在视图中使用

from meiduo_admin.utils.myPagination import MyPageNumberPagination
 
class UsersView(ListAPIView):
    pagination_class = MyPageNumberPagination
    serializer_class = UsersSerialize
    # 获取queryset时需要进行排序否则会有报错提示
    queryset = models.User.objects.filter(is_staff=False).all().order_by('-date_joined')

4. 路由

from meiduo_admin.user.user_views import UsersView
 
urlpatterns = [
 
    # 获取用户
    path('users/', UsersView.as_view()),
]

5. postman返回结果