def put(self, req, book_id):
data_dict = req.data
book = BookInfo.objects.get(id=book_id)
ser = BookInfoSerializer(instance=book, data=data_dict)
ser.is_valid(raise_exception=True)
ser.save()
return Response(ser.data, status=status.HTTP_201_CREATED)
def post(self, request):
# 1、获取参数
data_dict = request.data
# 2、创建序列化器
ser = BookInfoSerializer(data=data_dict)
# 3、校验、数据入库
ser.is_valid(raise_exception=True)
ser.save()
# 4、返回响应
return Response(ser.data, status=status.HTTP_201_CREATED)
def put(self, request, pk):
# 1、获取参数
dict_data = json.loads(request.body.decode())
# 2、校验参数
book = BookInfo.objects.get(pk=pk)
origin_data = BookInfoSerializer(instance=book).data
origin_data.update(**dict_data)
serializer = BookInfoSerializer(instance=book,
data=origin_data,
partial=True)
try:
serializer.is_valid(raise_exception=True)
except ValidationError as e:
return http.JsonResponse({
'code':
405,
'msg':
next(iter(e.detail.values()))[0].title()
})
# 3、数据入库
serializer.save()
# 4、返回响应
return http.JsonResponse(serializer.data)
def post(self, request):
# 1、获取参数
dict_data = json.loads(request.body.decode())
btitle = dict_data.get('btitle')
bpub_date = dict_data.get('bpub_date')
bread = dict_data.get('bread')
bcomment = dict_data.get('bcomment')
# 2、校验参数
ser = BookInfoSerializer(data=dict_data)
try:
ser.is_valid(raise_exception=True)
except ValidationError as error:
return http.JsonResponse({
'code':
405,
'msg':
next(iter(error.detail.values()))[0].title()
})
# 3、数据入库
# book = BookInfo.objects.create(**dict_data)
book = ser.save()
# 4、返回响应
return http.JsonResponse(book, status=201)
def deserializer(request):
# 模拟前端提交的数据
# data = {"id":1, "btitle": "西游记之Django开发", "bpub_date": "2000-01-01", "is_delete": 1, "bread": 100, "bcomment": 10}
# data = {"hname": "猪八戒", "hbook": 100}
data = {"btitle": "水浒传之Django开发5", "bpub_date": "2000-01-01"}
# 查询数据库, 得到一个bookInfo模型对象, 用于进行更新
book = BookInfo.query.get(pk=5)
# s = BookInfoSerializer(book, data=data)
s = BookInfoSerializer(data=data)
# s = HeroInfoSerializer(data=data)
# 判断前端数据是否合法, True表示合法
print(s.is_valid(raise_exception=True))
# 可以输出错误信息
print(s.errors)
# 可以提取处校验结束之后的干净数据
print(s.validated_data)
s.save()
return HttpResponse("反序列化结束! %s" % s.validated_data)
# 获取一本书
book = BookInfo.objects.get(id=9)
# 准备数据
req_data = {
'btitle': 'django_rest',
'bpub_date': '2019-06-01',
'bread': 21,
'bcomment': 20
}
# 创建序列化器对象
serializer = BookInfoSerializer(book, data=req_data)
# 数据校验
serializer.is_valid()
# 数据保存：此处save会调用序列化器类中的create方法
serializer.save()
# 获取create方法返回的对象序列化之后的数据
res = serializer.data
res = json.dumps(res, indent=1, ensure_ascii=False)
print(res)
# # 查询获取图书对象
# book = BookInfo.objects.all()
#
# # 创建序列化对象
# serializer = BookInfoSerializer(book,many=True)
#
# 关联对象嵌套序列化！！
hero = HeroInfo.objects.get(id=1)
serializer_hero = HeroInfoSerializer(instance=hero)
serializer_hero.data
"""反序列化"""
# 新建
data = {
'btitle': 'django三国演义',
'bpub_date': '1996-5-1',
'bcomment': 10,
'bread': 30
}
serializer = BookInfoSerializer(
data=data) # 新建 没有参数instance，看重写的create方法 只传入一个参数
# serializer.is_valid() # 返回布尔值
serializer.is_valid(raise_exception=True) # 如果出现异常自动抛出
# serializer.errors # is_valid 返回 False,看错误信息
# serializer.validated_data # OrderedDict([('btitle', '三国演义'), ('bpub_date', datetime.date(1996, 5, 1))])
serializer.save() # 执行继承的方法 实质 选择方法(update/create 方法里保存到数据库)
# 更新
book = BookInfo.objects.get(id=9)
data = {
'btitle': '大国django三国演义',
'bpub_date': '1996-6-6',
'bcomment': 10,
'bread': 30
}
serializer = BookInfoSerializer(instance=book, data=data)
serializer.is_valid(raise_exception=True)
serializer.save() # 序列化中的saexitve实质 依靠方法模型自身的save()
import os
if not os.environ.get('DJANGO_SETTINGS_MODULE'):
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "drf.settings")
# 让Django环境进行一次初始化
import django
django.setup()
import json
from booktest.models import BookInfo,HeroInfo
from booktest.serializers import HeroInfoSerializer,BookInfoSerializer
if __name__ == "__main__":
# 获取id为1的图书
book = BookInfo.objects.get(id=1)
# 准备数据
data = {'btitle': '射雕英雄传-2', 'bpub_date': '2000-01-01'}
# 创建序列化器对象
serializer = BookInfoSerializer(book, data=data)
# 反序列化-数据校验
res = serializer.is_valid()
print(res)
# 反序列化-数据保存(调用序列化器类中update)
serializer.save()
# 获取更新对象序列化之后的数据
print(serializer.data)
print(serializer.data)
"""
4、反序列化，书籍对象
"""
from booktest.serializers import BookInfoSerializer
# 1、准备数据
book_dict = {
"btitle": "活着",
"bpub_date": "2020-1-01",
"bread": "50",
"bcomment": "20",
}
# 2、创建序列化器
serializer = BookInfoSerializer(data=book_dict)
# serializer.is_valid()
serializer.is_valid(raise_exception=True)
# 3、输出
print(serializer.data)
"""
5、反序列化创建对象入库
"""
from booktest.serializers import BookInfoSerializer
# 1、准备数据
book_dict = {
"btitle": "活着",
"bpub_date": "2020-1-01",
"bread": "50",
"bcomment": "20",
}
# 2、创建序列化器
serializer = BookInfoSerializer(data=book_dict)