REST

INSTALLED_APPS = [
    ...
    ‘rest_framework‘,
]

from rest_framework import routers
from . import views


router = routers.DefaultRouter()
router.register(r‘users‘, views.UserInfoViewSet)

urlpatterns = [
    url(r‘^‘, include(router.urls)),
]

from rest_framework import viewsets
from . import models
from . import serializers

# ########### 1. 基本处理方式 ###########

class UserInfoViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows users to be viewed or edited.
    """
    queryset = models.UserInfo.objects.all().order_by(‘-id‘)
    serializer_class = serializers.UserInfoSerializer

from rest_framework import serializers
from . import models

class UserInfoSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = models.UserInfo
        # fields = (‘id‘, ‘username‘, ‘pwd‘,‘ug‘) # fields = ‘__all__‘
        exclude = (‘ug‘,)
        depth = 1  # 0<=depth<=10

from django.conf.urls import url,include
from django.contrib import admin
from . import views

urlpatterns = [
    url(r‘^users/$‘, views.UserList.as_view()),
    url(r‘^users/(?P<pk>[0-9]+)/$‘, views.UserDetail.as_view()),
]

复制代码
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.request import Request
from rest_framework.parsers import JSONParser
from . import models
from . import serializers


class UserList(APIView):
    def get(self, request, *args, **kwargs):
        user_list = models.UserInfo.objects.all()
        serializer = serializers.MySerializer(instance=user_list, many=True)
        return Response(serializer.data)

    def post(self, request, *args, **kwargs):
        data = JSONParser().parse(request)
        serializer = serializers.MySerializer(data=data)
        if serializer.is_valid():
            # print(serializer.data)
            # print(serializer.errors)
            # print(serializer.validated_data)
            # 如果有instance，则执行update方法；否则，执行create
            serializer.save()
            return Response(serializer.data, status=201)
        return Response(serializer.errors, status=400)


class UserDetail(APIView):
    def get(self, request, *args, **kwargs):
        obj = models.UserInfo.objects.filter(pk=kwargs.get(‘pk‘)).first()
        serializer = serializers.MySerializer(obj)
        return Response(serializer.data)

    def delete(self, request, *args, **kwargs):
        obj = models.UserInfo.objects.filter(pk=kwargs.get(‘pk‘)).first()
        obj.delete()
        return Response(status=204)

    def put(self, request, *args, **kwargs):
        data = JSONParser().parse(request)
        obj = models.UserInfo.objects.filter(pk=kwargs.get(‘pk‘)).first()
        serializer = serializers.MySerializer(obj, data=data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        return Response(serializer.errors, status=400)

from rest_framework import serializers
from rest_framework.exceptions import ValidationError
from . import models


class MySerializer(serializers.Serializer):
    id = serializers.IntegerField(read_only=True)
    username = serializers.CharField(required=False, allow_blank=True, max_length=100)
    pwd = serializers.CharField()

    def validate_username(self, value):
        if value == ‘中国‘:
            raise ValidationError(‘用户名中存在敏感字符‘)
        return value

    def validate_pwd(self, value):
        print(value)
        return value

    def validate(self, attrs):
        print(attrs)
        return attrs

    def create(self, validated_data):
        """
        当执行save方法时，自动调用。instance未传值
        :param validated_data:
        :return:
        """
        print(validated_data)
        return models.UserInfo.objects.create(**validated_data)

    def update(self, instance, validated_data):
        """
        当执行save方法时，自动调用。instance传值
        :param instance:
        :param validated_data:
        :return:
        """
        instance.username = validated_data.get(‘username‘, instance.username)
        instance.save()
        return instance

from django.conf.urls import url,include
from django.contrib import admin
from . import views

urlpatterns = [
    url(r‘^users/$‘, views.user_list),
    url(r‘^users/(?P<pk>[0-9]+)/$‘, views.user_detail),
]