django原生View（增删改查）

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django 原生View

目录

• django 原生View
  • Model 图书管理案例
  • View 实现添加动能
  • View 实现查看动能
  • View 实现修改动能
  • View 实现删除动能

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Model 图书管理案例

class BookModel(models.Model):
    title = models.CharField(max_length=32,verbose_name='书名')
    pub_date = models.DateField(verbose_name='发布日期')
    desc = models.CharField(max_length=320,verbose_name='简介')
    read = models.IntegerField(default=0,verbose_name='阅读量')
    is_delete = models.BooleanField(default=False,verbose_name='逻辑删除')

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View 实现添加动能

class BookView(View):

    def post(self,request):
        data = json.loads(request.body.decode())
        title = data.get('title')
        pub_date = data.get('pub_date')
        desc = data.get('desc')
        book = BookModel.objects.create(title=title,pub_date=pub_date,desc=desc)
        book_dict = {
            'id':book.id,
            'title':book.title,
            'pub_date':book.pub_date,
            'read':book.read,
            'desc':book.desc,
        }
        return JsonResponse(book_dict,status=201)

---

View 实现查看动能

class BookView(View):

        def get(self,request,pk=None):
        # 查看单条数据
        if pk:
            try:
                book = BookModel.objects.get(pk=pk)
                book_dict = {
                    'id': book.id,
                    'title': book.title,
                    'pub_date': book.pub_date,
                    'desc': book.desc,
                    'read': book.read,
                }
                return JsonResponse(book_dict)
            except Exception as e:
                return JsonResponse({'code':400,'msg':'pk不存在'})
        # 查看多条数据
        else:
            books = BookModel.objects.all()
            book_list = []
            for book in books:
                book_dict = {
                    'id':book.id,
                    'title':book.title,
                    'pub_date':book.pub_date,
                    'desc':book.desc,
                    'read':book.read,
                }
                book_list.append(book_dict)
            return JsonResponse(book_list,safe=False)

---

View 实现修改动能

class BookView(View):
    def put(self,request,pk=None):
        try:
            book = BookModel.objects.get(pk=pk)
            data = json.loads(request.body.decode())
            title = data.get('title')
            pub_date = data.get('pub_date')
            book.title=title
            book.pub_date=pub_date
            book.save()
            book_dict = {
                'id': book.id,
                'title': book.title,
                'pub_date': book.pub_date,
                'desc': book.desc,
                'read': book.read,
            }
            return JsonResponse(book_dict)
        except Exception as e:
            return JsonResponse({'code':400,'msg':'pk不存在'})

---

View 实现删除动能

class BookView(View):
    def delete(self,request,pk=None):
        try:
            book = BookModel.objects.get(pk=pk)
            book.is_delete=True
            book.save_base()
            return HttpResponse('ok')
        except Exception as e:
            return JsonResponse({'code':400,'msg':'pk不存在'})