def get(self, request):
# 查询所有数据集
all_articles = Article.objects.all()
# 对数据集进行序列化 数据集为多时用many=True
serializer = ArticleModelSerializer(instance=all_articles, many=True)
# 返回前端响应
return Response(serializer.data)
def retrieve(self, request, pk):
# 查询模型数据
try:
article = Article.objects.get(pk=pk)
except article.DoesNotExist:
return Response(status=status.HTTP_404_NOT_FOUND)
# 创建序列化器
serializer = ArticleModelSerializer(article)
# 响应数据
return Response(serializer.data, status=status.HTTP_200_OK)
def get(self, request, pk):
# 查询单个数据集
try:
article = Article.objects.get(pk=pk)
except Article.DoesNotExist:
return Response(status=status.HTTP_404_NOT_FOUND)
# 对数据集进行序列化 数据集为多时用many=True 单个数据集不需要这个参数
serializer = ArticleModelSerializer(instance=article)
# 返回前端响应
return Response(serializer.data, status=status.HTTP_200_OK)
def create(self, request):
# 创建序列化器
serializer = ArticleModelSerializer(data=request.data)
# 验证数据
serializer.is_valid(raise_exception=True)
# 保存数据
serializer.save()
# 响应数据
return Response(serializer.data, status=status.HTTP_201_CREATED)
def post(self, request):
# 新增
# 1.获取前端传入的请求体数据
data = request.data
# 2.创建序列化器进行反序列化
serializer = ArticleModelSerializer(data=data)
# 3.电泳序列化器的.is_valid方法进行校验，并自动抛出异常信息
serializer.is_valid(raise_exception=True)
# 4.调用序列化器的save方法进行执行create方法
serializer.save(author=request.user)
# 5.响应
return Response(serializer.data, status=status.HTTP_201_CREATED)
def update(self, request, pk):
# 查询数据库对象
try:
article = Article.objects.get(pk=pk)
except article.DoesNotExist:
return Response(status=status.HTTP_404_NOT_FOUND)
# 创建序列化器
serializer = ArticleModelSerializer(instance=article, data=request.data)
# 校验数据
serializer.is_valid(raise_exception=True)
# 保存数据
serializer.save()
# 响应数据
return Response(serializer.data, status=status.HTTP_204_NO_CONTENT)
def put(self, request, pk):
# 修改数据
# 1.查询pk对应的单个数据
try:
article = Article.objects.get(pk=pk)
except Article.DoesNotExist:
return Response(status=status.HTTP_404_NOT_FOUND)
# 获取前端传过来的数据
data = request.data
# 2.创建序列化器
serializer = ArticleModelSerializer(instance=article, data=data)
# 3.校验 不需要if判断 有异常直接抛出
serializer.is_valid(raise_exception=True)
# 4.save
serializer.save(author=request.user)
# 5.响应
return Response(serializer.data, status=status.HTTP_204_NO_CONTENT)
def list(self, request):
# 获取数据列表
articles = Article.objects.all()
# 创建序列化器
serializer = ArticleModelSerializer(instance=articles, many=True)
return Response(serializer.data, status=status.HTTP_200_OK)