Django---drf第一天---作业

1 图书的5个接口写完（使用序列化组件）

urls.py

from django.contrib import admin
from django.urls import path, re_path
from app01 import views
urlpatterns = [
    path('admin/', admin.site.urls),
    re_path('books/(?P<pk>\d+)', views.BookView.as_view()),
    path('',views.BooksView.as_view())
]

views.py

from django.shortcuts import render
from rest_framework.views import APIView,Response
from app01.models import Book
from app01.ser import BookSerializer
from django.http.response import JsonResponse
from app01.utils import MyResponse
# Create your views here.

class BookView(APIView):
    def get(self,request,pk):
        book = Book.objects.filter(nid=pk).first()
        book_ser = BookSerializer(book)
        return Response(book_ser.data)

    def put(self,request,pk):
        response_msg = {'status':100,'msg':'成功'}
        book = Book.objects.filter(nid=pk).first()
        boo_ser = BookSerializer(instance=book,data=request.data)

        if boo_ser.is_valid():
            boo_ser.save()
            response_msg['data']=boo_ser.data
        else:
            response_msg['status'] = 101
            response_msg['msg'] = '数据校检失败'
            response_msg['data'] = boo_ser.errors

        return Response(response_msg)

    def delete(self,request,pk):
        response = MyResponse()
        ret = Book.objects.filter(nid=pk).delete()
        return Response(response.get_dict)

class BooksView(APIView):
    def get(self,request):
        response = MyResponse()
        books = Book.objects.all()
        book_ser = BookSerializer(books,many=True)
        response.data = book_ser.data
        return Response(response.get_dict)

    def post(self,request):
        response_msg = {'status':100,'msg':'成功'}
        book_ser = BookSerializer(data=request.data)

        if book_ser.is_valid():
            book_ser.save()
            response_msg['data'] = book_ser.data
        else:
            response_msg['status'] = 102
            response_msg['msg'] = '校检数据失败'
            response_msg['status'] = book_ser.errors
        return Response(response_msg)

modles.py

from django.db import models

# Create your models here.

class Book(models.Model):
    nid = models.AutoField(primary_key=True)
    name = models.CharField(max_length=64)
    price = models.DecimalField(decimal_places=2,max_digits=6)
    author = models.CharField(max_length=32)
    publish = models.CharField(max_length=64)

app01下ser.py创建序列化类

from rest_framework import serializers
from app01.models import Book

class BookSerializer(serializers.Serializer):
    xxd = serializers.CharField(source='nid')
    name = serializers.CharField()
    price = serializers.CharField()
    author = serializers.CharField()
    publish = serializers.CharField()

    def create(self, validated_data):
        instance = Book.objects.create(**validated_data)
        return instance

    def update(self, instance, validated_data):
        instance.name = validated_data.get('name')
        instance.price = validated_data.get('price')
        instance.author = validated_data.get('author')
        instance.publish = validated_data.get('publish')
        instance.save()
        return instance

app01下utils.py创建MyResponse类返回字典

class MyResponse():
    def __init__(self):
        self.status = 100
        self.msg = '成功'
    @property
    def get_dict(self):
        return self.__dict__

if __name__ == '__main__':
    res = MyResponse()
    res.status = 101
    res.msg = '查询失败'

settings.py注册djangorestframwork组件

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app01.apps.App01Config',
    'rest_framework'
]

2 尝试修改一下返回的字段名字

在序列化类BookSerializer的字段中添加参数source