Django DRF分页组件基础班,提供上一页/下一页/数据条数三个数据接口

1.urls.py文件-->路由

from pagenation import views
from django.urls import re_path
urlpatterns = [
    re_path('booklist/', views.BasicEditionView.as_view())
]

 

2.views.py文件-->视图

# Third-party Library
from rest_framework.views import APIView
from rest_framework.pagination import PageNumberPagination

# Custom Library
from pagenation.models import UserInfo
from pagenation.service.pagenations import PagerSerializer


class MyPaginator(PageNumberPagination):
    # 默认每页数据条数
    page_size = 2
    # 使用page作为key传递页码
    page_query_param = "page"
    # 指定每页显示条数
    page_size_query_param = "page_size"


class BasicEditionView(APIView):
    def get(self, request, *args, **kwargs):
        users = UserInfo.objects.all()
        page_obj = MyPaginator()
        page_lst = page_obj.paginate_queryset(users, request, self)
        serialized = PagerSerializer(instance=page_lst, many=True)
        """
        # 只显示每页数据
        return Response(serialized.data)
        """
        # 不单显示每页数据,还显示上一页'previous', 下一页'next', 数据总条数'count'
        response = page_obj.get_paginated_response(serialized.data)
        return response

 

3.pagenations.py文件-->序列化组件

#!/usr/bin/env python
# -*- coding:utf-8 -*-

# Third-party Library
from rest_framework import serializers
# Custom Library
from pagenation.models import UserInfo


class PagerSerializer(serializers.ModelSerializer):
    class Meta:
        # 指定model
        model = UserInfo
        # 自动生成所有字段
        fields = '__all__'
        # 对于外键字段,可以显示
        depth = 2

 

4.models.py文件-->数据库

from django.db import models

# Create your models here.

class UserInfo(models.Model):
    name = models.CharField(max_length=32)
    age = models.CharField(max_length=32)
    gender = models.CharField(max_length=32)

 

5.特殊情况处理,针对继承ModelViewSet的视图列处理方法及url的处理方法如下

url处理办法:

from pagenation import views, views2
from django.urls import re_path


urlpatterns = [
    re_path('booklist/', views.BasicEditionView.as_view(
        {'get': 'list'}
    )),
]

 

视图处理办法:

#!/usr/bin/env python
# -*- coding:utf-8 -*-

# Third-party Library
from rest_framework.pagination import PageNumberPagination
from rest_framework.viewsets import ModelViewSet
from rest_framework.renderers import JSONRenderer, BrowsableAPIRenderer

# Custom Library
from pagenation.models import UserInfo
from pagenation.service.pagenations import PagerSerializer


class MyPaginator(PageNumberPagination):
    # 默认每页数据条数
    page_size = 2
    # 使用page作为key传递页码
    page_query_param = "page"
    # 指定每页显示条数
    page_size_query_param = "page_size"


class BasicEditionView(ModelViewSet):
    # 分页
    pagination_class = MyPaginator
    # 渲染
    renderer_classes = [JSONRenderer, BrowsableAPIRenderer]
    # queryset数据
    queryset = UserInfo.objects.all()
    # 序列化
    serializer_class = PagerSerializer