class ContentCreateUpdateView(TemplateResponseMixin, View):
module = None
model = None
obj = None
template_name = 'courses/manage/content/form.html'
def get_model(self, model_name):
if model_name in ['text', 'video', 'image', 'file']:
return apps.get_model(app_label='courses', model_name=model_name)
return None
def get_form(self, model, *args, **kwargs):
Form = modelform_factory(model, exclude=['owner', 'order', 'created', 'updated'])
return Form
def dispatch(self, request, module_id, model_name, id=None):
self.module = get_object_or_404(Module, id=module_id, course__owner=request.user)
self.model = self.get_model(model_name)
if id:
self.obj = get_object_or_404(self.model, id=id, owner=request.user)
return super(ContentCreateUpdateView, self).dispatch(request, module_id, model_name, id)
def get(self, request, module_id, model_name, id=None):
form = self.get_form(self.model, instance=self.obj)
return self.render_to_response({'form': form, 'object': self.obj})
def post(self, request, module_id, model_name, id=None):
form = self.get_form(self.model, instance=self.obj, data=request.POST, files=request.FILES)
if form.is_valid():
obj = form.save(commit=False)
obj.owner = request.user
obj.save()
if not id:
# new content
Content.objects.create(module=self.module, item=obj)
return redirect('module_content_list', self.module.id)
return self.render_to_response({'form': form, 'object': self.obj})
请使用django版本:1.11.10和python版本:3.6.2 . 以下是追溯
追溯:
内部41中的文件“C:\ Users \ TOCHIE \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ django \ core \ handlers \ exception.py”response = get_response(request)File“C:用户\ TOCHIE \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ django \ core \ handlers \ base.py“in _get_response 187. response = self.process_exception_by_middleware(e,request)File”C:\用户\ TOCHIE \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ django \ core \ handlers \ base.py“in _get_response 185. response = wrapped_callback(request,* callback_args,** callback_kwargs)File”C :\ Copyright \ TOCHIE \ AppData \ Local \ Programs \ Python \ Python36 \ lib \ site-packages \ django \ views \ generic \ base.py“在视图68中 . 返回self.dispatch(request,* args,** kwargs)在调度114中文件“C:\ Users \ TOCHIE \ PycharmProjects \ virtual_django \ env \ e_learning \ educa \ courses \ views.py” . 返回super(ContentCreateUpdateView,self).dispatch(request,module_id,model_name,id)文件“C :\用户\ TOCHIE \应用程序数据\本地\程序\ Python的\ Python36 \ LIB \站点包\ django \ views \ generic \ base.py“在dispatch 88中 . 返回处理程序(request,* args,** kwargs)文件”C:\ Users \ TOCHIE \ PycharmProjects \ virtual_django \ env \ e_learning \ educa \ courses \ views . py“在post 122. if form.is_valid():Exception Type:TypeError at / course / module / 4 / content / image / create / Exception值:is_valid()缺少1个必需的位置参数:'self'
1 回答
您在
get_form
中使用的modelform_factory返回ModelForm
类,您应该在调用is_valid
之前实例化它: