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用drf编写

'''
1 有车型(CarModel)，车厂（CarFactory），经销商(Distributor)三个表,
一个车厂可以生产多种车型，一个经销商可以出售多种车型，一个车型可以有多个经销商出售车型：车型名，车型出厂价，车厂id车厂：车厂名，车厂地址，联系电话经销商：经销商名，地址，联系电话
2 有用户表，基于django内置user表，扩展mobile字段
3 编写登陆接口，jwt方式返回token，格式为{status:100,msg:登陆成功，token：safasdfa}
4 所有接口（除登录外），必须登录后才能访问
5 管理员登陆后可以增，删，单查，群查，改 车型，车厂，经销商(具备所有接口权限)
6 普通用户登陆可以查看车型，车厂，经销商单条，所有(只有查看权限)
7 所有查询所有接口带分页功能
8 查询所有车型接口，可以按车型名字精准过滤加分项：
用户注册接口
管理员有用户锁定，删除用户功能
'''

models.py

from django.db import modelsfrom django.contrib.auth.models import AbstractUserclass User(AbstractUser):mobile = models.CharField(max_length=32, verbose_name='联系电话')# 车型
class CarModel(models.Model):name = models.CharField(max_length=32, verbose_name='车型名')init_price = models.IntegerField(verbose_name='出厂价')factory = models.ForeignKey(to='CarFactory', on_delete=models.CASCADE, verbose_name='车厂id')distributors = models.ManyToManyField(to='Distributor', verbose_name='经销商')class Meta:verbose_name_plural = '经销商表'def __str__(self):return self.namedef factory_info(self):'''车厂信息'''return {'name': self.factory.name, 'addr': self.factory.addr, 'mobile': self.factory.mobile}def distributor_info(self):'''经销商信息'''distributor_info_list = []for distributor in self.distributors.all():distributor_info_list.append({'name': distributor.name, 'addr': distributor.addr,'mobile': distributor.mobile})return distributor_info_list# 车厂
class CarFactory(models.Model):name = models.CharField(max_length=32, verbose_name='车厂名')addr = models.CharField(max_length=32, verbose_name='车厂地址')mobile = models.CharField(max_length=32, verbose_name='联系电话')class Meta:verbose_name_plural = '经销商表'def __str__(self):return self.name# 经销商
class Distributor(models.Model):name = models.CharField(max_length=32, verbose_name='经销商名')addr = models.CharField(max_length=32, verbose_name='地址')mobile = models.CharField(max_length=32, verbose_name='联系电话')class Meta:verbose_name_plural = '经销商表'def __str__(self):return self.name

新建一个jwt_response.py验证登录

def jwt_response_payload_handler(token, user, request):return {'code': 100,'msg': '登录成功','token': token}

新建一个exceptions.py验证错误

from rest_framework.views import exception_handler
from rest_framework.response import Responsedef common_exception(exc, context):res = exception_handler(exc, context)if not res:return Response({'code': 999, 'msg': f'非drf错误，错误信息是：{str(exc)}'})return Response({'code': 666, 'msg': f'这是drf错误，错误信息是：{res.data.get("detail")}'})

settings.py配置文件中

JWT_AUTH = {'JWT_RESPONSE_PAYLOAD_HANDLER': 'app01.jwt_response.jwt_response_payload_handler','JWT_EXPIRATION_DELTA': datetime.timedelta(days=1)
}REST_FRAMEWORK = {'EXCEPTION_HANDLER': 'app01.exceptions.common_exception',
}

新建page.py分页

from rest_framework.pagination import PageNumberPaginationclass MyPageNumberPagination(PageNumberPagination):page_size = 3  # 每页显示3条max_page_size = 5  # 每页最大显示5条

新建serializer.py分页

from rest_framework import serializersfrom app01.models import User, CarModel, CarFactory, Distributorclass UserSerializer(serializers.ModelSerializer):class Meta:model = Userfields = ['username', 'password', 'mobile']extra_kwargs = {'password': {'write_only': True}}def create(self, validated_data):user = User.objects.create_user(**validated_data)return userclass CarModelSerializer(serializers.ModelSerializer):class Meta:model = CarModelfields = ['id', 'name', 'init_price', 'factory', 'distributors', 'factory_info', 'distributor_info']extra_kwargs = {'factory': {'write_only': True},'distributors': {'write_only': True},'factory_info': {'read_only': True},'distributor_info': {'read_only': True},}class CarFactorySerializer(serializers.ModelSerializer):class Meta:model = CarFactoryfields = '__all__'class DistributorSerializer(serializers.ModelSerializer):class Meta:model = Distributorfields = '__all__'

新建permission.py权限

from rest_framework.permissions import BasePermission
from rest_framework.exceptions import AuthenticationFailedclass MyPermission(BasePermission):def has_permission(self, request, view):print(view.action)if not request.user.is_superuser and request.method != 'GET':raise AuthenticationFailed('普通用户，权限不足')return True

views.py视图中

from rest_framework.viewsets import ViewSet
from rest_framework.generics import GenericAPIView
from rest_framework.mixins import CreateModelMixinfrom .models import User
from .serializer import UserSerializerfrom rest_framework.response import Responseclass UserView(ViewSet, GenericAPIView, CreateModelMixin):queryset = User.objects.all()serializer_class = UserSerializerdef create(self, request, *args, **kwargs):ser = self.get_serializer(data=request.data)if ser.is_valid():ser.save()return Response({'code': 100, 'msg': '注册成功', 'result': ser.data})return Response({'code': 101, 'msg': '注册失败', 'result': ser.errors})from rest_framework.mixins import DestroyModelMixin
from rest_framework_jwt.authentication import JSONWebTokenAuthentication
from rest_framework.permissions import IsAuthenticated, IsAdminUser
from rest_framework.decorators import actionclass AdminView(ViewSet, GenericAPIView, DestroyModelMixin):queryset = User.objects.all()authentication_classes = [JSONWebTokenAuthentication]permission_classes = [IsAuthenticated, IsAdminUser]# detail=True 表示可以删除单个资源@action(methods=['DELETE'], detail=True)def delete_user(self, request, *args, **kwargs):return self.destroy(request, *args, **kwargs)@action(methods=['GET'], detail=True)def lock(self, request, *args, **kwargs):user = self.get_object()if user is None:return Response({'code': 101, 'msg': '用户不存在'})if user.is_active:user.is_active = Falseuser.save()return Response({'code': 100, 'msg': '用户锁定成功'})return Response({'code': 102, 'msg': '用户已经被锁定'})@action(methods=['GET'], detail=True)def unlock(self, request, *args, **kwargs):user = self.get_object()if user is None:return Response({'code': 101, 'msg': '用户不存在'})if user.is_active is False:user.is_active = Trueuser.save()return Response({'code': 100, 'msg': '用户解锁成功'})return Response({'code': 102, 'msg': '用户已经解锁过了'})from rest_framework.viewsets import ModelViewSetfrom .models import CarModel
from .serializer import CarModelSerializer
from .permissions import MyPermission
from .page import MyPageNumberPaginationfrom django_filters.rest_framework import DjangoFilterBackendclass CarModelView(ModelViewSet):queryset = CarModel.objects.all()serializer_class = CarModelSerializer# 认证authentication_classes = [JSONWebTokenAuthentication]# 权限permission_classes = [IsAuthenticated, MyPermission]# 分页pagination_class = MyPageNumberPagination# 过滤filter_backends = [DjangoFilterBackend]filterset_fields = ['name']from .models import CarFactory
from .serializer import CarFactorySerializerclass CarFactoryView(ModelViewSet):queryset = CarFactory.objects.all()serializer_class = CarFactorySerializerpagination_class = MyPageNumberPaginationauthentication_classes = [JSONWebTokenAuthentication]permission_classes = [IsAuthenticated, MyPermission]from .models import Distributor
from .serializer import DistributorSerializerclass DistributorView(ModelViewSet):queryset = Distributor.objects.all()serializer_class = DistributorSerializerpagination_class = MyPageNumberPaginationauthentication_classes = [JSONWebTokenAuthentication]permission_classes = [IsAuthenticated, MyPermission]

urls.py路由中

from django.contrib import admin
from django.urls import path, includefrom rest_framework_jwt.views import obtain_jwt_tokenfrom rest_framework.routers import SimpleRouterfrom app01.views import UserView, AdminView, CarModelView, CarFactoryView, DistributorViewrouter = SimpleRouter()router.register('user', UserView, 'user')
router.register('admin', AdminView, 'admin')router.register('carMode', CarModelView, 'carMode')
router.register('carFactory', CarFactoryView, 'carFactory')
router.register('distributor', DistributorView, 'distributor')urlpatterns = [path('login/', obtain_jwt_token),path('', include(router.urls))
]