def post(self, request):
# 1、获取前端数据
data = request.data
# 2、验证数据 初始化序列化器对象，将前端需要验证的数据传递给data参数
ser = BookSerializer(data=data)
# 2-2 执行验证方法
ser.is_valid()
# 2-3 获取验证后的状态信息
if ser.errors:
return JsonResponse({'errors': ser.errors})
# 3、保存数据
# 调用序列器中的create方法完成保存
ser.save()
# 4、返回结果
return Response(ser.data)
def post(self, request):
serializer = BookSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response({'error': serializer.errors},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
def book_detail_by_language(request, lang):
"""
Retrieve, update or delete a book.
"""
print "hey"
try:
# Filters books
book = Book.objects.filter(language=lang)
except Book.DoesNotExist:
return HttpResponse(status=404)
if request.method == 'GET':
serializer = BookSerializer(book, many=True)
return JsonResponse(serializer.data, safe=False)
elif request.method == 'PUT':
data = JSONParser().parse(request)
serializer = BookSerializer(book, data=data)
if serializer.is_valid():
serializer.save()
return JsonResponse(serializer.data)
return JsonResponse(serializer.errors, status=400)
elif request.method == 'DELETE':
book.delete()
return HttpResponse(status=204)
def post(self, request):
# 1、获取前端数据
data = request.body.decode()
data_dict = json.loads(data)
# 2、验证数据 初始化序列化器对象，将前端需要验证的数据传递给data参数
ser = BookSerializer(data=data_dict)
# 2-2 执行验证方法
ser.is_valid()
# 2-3 获取验证后的状态信息
if ser.errors:
return JsonResponse({'errors': ser.errors})
# 2-4 获取验证成功后的数据
validated_data = ser.validated_data
# 3、保存数据
# 调用序列器中的create方法完成保存
ser.save()
# 4、返回结果
return JsonResponse(ser.data)
def lend_retrieve(request, pk):
try:
book = Book.objects.get(pk=pk)
except Book.DoesNotExist:
return Response(status=status.HTTP_404_NOT_FOUND)
serializer = BookSerializer(book, data=request.data, partial=True)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
else:
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
def put(self, request, pk):
# 1、获取更新图书
try:
book = BookInfo.objects.get(id=pk)
except:
return JsonResponse({"error": "图书不存在"})
# 2、获取更新字段数据
data = request.data
# 3、验证数据
ser = BookSerializer(book, data=data)
# 3-2 执行验证方法
try:
ser.is_valid(raise_exception=True)
except Exception as e:
return Response({'errors': e.detail})
# 3-3 获取验证后的状态信息
# if ser.errors:
# return JsonResponse({'errors': ser.errors})
# 4、更新数据
ser.save()
# 5、返回结果
return Response(ser.data)
def put(self, request, pk):
# 1、获取更新图书
try:
book = BookInfo.objects.get(id=pk)
except:
return Response({"error": "图书不存在"})
# 2、获取更新字段数据
data = request.data
# 3、验证数据
# 4、更新数据
book_update = BookSerializer(book, data=data)
try:
book_update.is_valid(raise_exception=True)
except:
return Response({'errors': book_update.errors})
# 1.抛出异常的方法
# if book_update.errors:
# return JsonResponse({'errors':book_update.errors})
# 重新获取更新后的数据
book_update.save()
# 5、返回结果
return Response(book_update.data)
def create(self, request, *args, **kwargs):
try:
serializer = BookSerializer(data=request.data)
if serializer.is_valid():
serializer.validated_data['owner'] = Member.objects.get(
id=request.data['owner']['id'])
book = serializer.save()
# book.save()
return Response(BookSerializer(book).data,
status=status.HTTP_201_CREATED)
except Exception as ex:
pass
return Response(status=status.HTTP_400_BAD_REQUEST)
def book_list(request):
"""
List all books, or create a new book.
"""
if request.method == 'GET':
books = Book.objects.all()
serializer = BookSerializer(books, many=True)
return JsonResponse(serializer.data, safe=False)
elif request.method == 'POST':
data = JSONParser().parse(request)
serializer = BookSerializer(data=data)
if serializer.is_valid():
serializer.save()
return JsonResponse(serializer.data, status=201)
return JsonResponse(serializer.errors, status=400)
def create_book(request):
data = JSONParser().parse(request)
# convert keys from camelCase to snake_case
data = converts_keys(data, case='snake')
serializer = BookSerializer(data=data)
if serializer.is_valid():
category, publisher, author = None, None, None
category_id = data.get("category_id", None)
publisher_id = data.get("publisher_id", None)
author_id = data.get("author_id", None)
if category_id:
category = Category.objects.get(pk=category_id)
if publisher_id:
publisher = Publisher.objects.get(pk=publisher_id)
if author_id:
author = Author.objects.get(pk=author_id)
serializer.save(
category=category,
publisher=publisher,
author=author,
)
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
def book_detail_by_title(request, title):
"""
Retrieve, update or delete a book.
"""
try:
book = Book.objects.get(title=title)
except Book.DoesNotExist:
return HttpResponse(status=404)
if request.method == 'GET':
serializer = BookSerializer(book)
return JsonResponse(serializer.data)
data = JSONParser().parse(request)
elif request.method == 'PUT':
serializer = BookSerializer(book, data=data)
if serializer.is_valid():
serializer.save()
return JsonResponse(serializer.data)
return JsonResponse(serializer.errors, status=400)
elif request.method == 'DELETE':
book.delete()
return HttpResponse(status=204)