Question

我有一个基于类的视图，该视图根据所选项目呈现一个表单集。每个项目都有一个唯一的project_id。如果不对project_id（即“ 4”）进行硬编码以替换“ None”，则会在views.py中收到由第14行（下）引起的404错误。此外，如果我不加载表单集，在第4行的form.py下对project_id进行硬编码。由于project_id需要自动传递，我如何更新它并将其传递到表单集中？谢谢。

我尝试过：

views.py

class ReqView(CreateView):

    template_name = "req_view.html"
    model = ProjectBudgetReq
    form_class = ReqForm

    def get_form_kwargs(self,*args, **kwargs):
         form_kwargs = super(ReqView, self).get_form_kwargs(*args, **kwargs)
         form_kwargs['project_id'] = self.kwargs.get('project_id')
         print("get_form_kwargs:",form_kwargs)
         return form_kwargs

    def get_context_data(self,**kwargs):
        project_id = kwargs.pop('project_id',None)#Line 14 404 Error   
        project = get_object_or_404(ProjectDetails,id=project_id)
        formset = ReqFormSet(instance=project)

        context = super(ReqView, self).get_context_data(**kwargs)  

        context['project'] = project
        context['formset'] = formset

        return context

    def get_context_kwargs(self,**kwargs):
        context_kwargs = super(ReqView,self).get_context_kwargs(*args,**kwargs)
        context_kwargs['project_id'] = self.kwargs.get('project_id')
        return context_kwargs

forms.py

class CreateReqForm(forms.ModelForm):

    def __init__(self,*args,**kwargs):
        project_id = kwargs.pop('project_id',None) #Line 4 Formset not rendered   
        super(CreateReqForm,self).__init__(*args,**kwargs)

        self.fields['proj_name'].queryset = ProjDesc.objects.filter(id=project_id)
        self.fields['budget_desc'].queryset = ProjBudget.objects.filter(proj_name_id=project_id)

    class Meta:
        model = ProjBudgetReq
        fields = '__all__'  

BudgetReqFormSet = inlineformset_factory(ProjDesc, ProjBudgetReq, form=CreateReqForm, fields='__all__',extra=2)

问题：

views.py
#Line 14: 404 Error since it returns 'None'

forms.py
#Line 4: Formset does not render, since it's 'None'

如何从基于django类的视图向表单集发送动态ID信息

0 个答案: