django接口开发-代码优化views_post/put/delete

#优化cbc就代码其它post put  delete方法，同理

class BaseView(View):
    from_class = None

    @property
    def form(self):
        #issubclass:参数1是不是参数2的子类，校验model_class
        if self.from_class and issubclass(self.from_class,BaseForm):
            return self.from_class
        raise Exception("未定义from_class")

class PostView(BaseView):
    def post(self, requests):
        # 通过form进行数据验证
        form_obj = self.form(requests.POST)
        # 数据验证是否通过
        if form_obj.is_valid():
            self.model.objects.create(**form_obj.cleaned_data)
            return JsonResponse({"code": 200, "msg": "成功"})
        else:
            return JsonResponse({"code": 500, "msg": form_obj.errors.get_json_data()})
            # form_obj.cleaned_data是所有验证通过的数据

class PutView(BaseView):
    def put(self, requests):
        # django并没有处理PUT的数据，实际上put传过来的数据在request.body
        # 需要导入 from django.http import QueryDict 来处理数据
        put_data = QueryDict(requests.body)
        # 获取需要更新哪天数据的主键
        p_id = put_data.get('id')
        # 通过id 从数据库中取这条数据
        data_obj = self.model.objects.get(id=p_id)
        # 参数1是前端传过来的数据，参数2是数据库中获取的数据
        form_obj = self.form(put_data, instance=data_obj)
        if form_obj.is_valid():
            # 通过form的save方法进行数据更新
            form_obj.save()
            return JsonResponse({"code": 200, "msg": "成功"})
        else:
            return JsonResponse({"code": "500", "msg": form_obj.errors.get_json_data()})

class DeleteView(BaseView):
    def delete(self, requests):
        p_id = requests.GET.get('id')
        # 删除时，要知道删除的是哪条数据，获取主键id
        # 1-逻辑删除，改变字段状态
        self.model.objects.filter(id=p_id).update(is_delete=1)  # 这种方式不会触发updatetime
        # 可以触发updatetime方式
        obj = self.model.objects.filter(id=p_id).first()
        obj.is_delete = 1
        obj.save()
        # 2-物理删除，直接将数据delete掉
        self.model.objects.filter(id=p_id).delete()
        return JsonResponse({"msg": "delete"})

class NbView(PostView,PutView,DeleteView):
    pass


#views中代码：

class SParameter(NbView):
    from_class = ParameterForm

 

#参考forms

from django import forms
from django.forms import ModelForm

from example import models

class ParameterForm(forms,ModelForm):
    class Meta:
        model = models.Parameter
        exclude = ['id','is_delete','update_time','create_time']