如何在数据库中获取值并在Django表单上显示

如何解决如何在数据库中获取值并在Django表单上显示

我有一个 DuesLevy 模型，其中有一个名为 user 的字段，该字段恰好是我的 User 模型的外键。我想将用户模型中的电子邮件值显示到我的表单 AddMemberDuesForm（）

原因是我想获取电子邮件和金额值并将其传递给我的付款处理器。 我正在使用基于类的视图来处理我的表单，下面是我的代码
forms.py

class AddMemberDuesForm(forms.ModelForm):
    class_of_dues = forms.CharField(required=False,widget=forms.Select(choices=options.CLASS_OF_DUES,attrs={'class':'form-control'}))
    payment_circle = forms.CharField(required=False,widget=forms.Select(choices=options.PAYMENT_CIRCLE,attrs={'class':'form-control'}))
    payment_option = forms.CharField(required=False,widget=forms.Select(choices=options.PAYMENT_OPTION,attrs={'class':'form-control'}))
    payment_channel = forms.CharField(required=False,widget=forms.Select(choices=options.PAYMENT_CHANNEL_TYPE,attrs={'class':'form-control'}))
    amount = forms.DecimalField(widget=forms.NumberInput(attrs={'class':'form-control'}))
    payment_date = forms.DateField(widget=forms.DateInput(attrs={'class':'form-control','type':'date'}))
    
    description = forms.CharField(widget=forms.Textarea(attrs={'class':'form-control'}))


    class Meta():
        model = DuesLevy
        exclude = ('date_recorded','start_date','end_date','transaction_id')

views.py

class AddMemberDues(LoginRequiredMixin,CreateView):
    login_url = '/backoffice/'
    model = DuesLevy
    template_name =  'dashboard/add-edit-member-dues.html'
    form_class = AddMemberDuesForm
    context_object_name = 'member_form'

    def post(self,request,*args,**kwargs):
       form = AddMemberDuesForm(request.POST)
       if form.is_valid():
           form = AddMemberDuesForm()
           form.user.email = form.user.cleaned_data['email']
           self.template_name = 'dashboard/payment.html'
           form.save()
           return render(request,self.template_name,{'email': form.cleaned_data['email'],'amount': form.cleaned_data['amount']}) 

    def get(self,**kwargs):
        initial = {'email':request.user.email}
        form = AddMemberDuesForm(initial=initial)
        return render(request,{'email': form.cleaned_data['email']})

我在

中遇到此错误

'AddMemberDuesForm' object has no attribute 'cleaned_data'

Internal Server Error: /backoffice/add-member-dues/                                       
Traceback (most recent call last):                                                        
  File "C:\Users\Benedict\Miniconda3\envs\mycda\lib\site-packages\django\core\handlers\exception.py",line 34,in inner                                                             
    response = get_response(request)                                                      
  File "C:\Users\Benedict\Miniconda3\envs\mycda\lib\site-packages\django\core\handlers\base.py",line 115,in _get_response                                                         
    response = self.process_exception_by_middleware(e,request)                           
  File "C:\Users\Benedict\Miniconda3\envs\mycda\lib\site-packages\django\core\handlers\base.py",line 113,in _get_response                                                         
    response = wrapped_callback(request,*callback_args,**callback_kwargs)               
  File "C:\Users\Benedict\Miniconda3\envs\mycda\lib\site-packages\django\views\generic\base.py",line 71,in view                                                                   
    return self.dispatch(request,**kwargs)                                        
  File "C:\Users\Benedict\Miniconda3\envs\mycda\lib\site-packages\django\contrib\auth\mixins.py",line 52,in dispatch                                                              
    return super().dispatch(request,**kwargs)                                     
  File "C:\Users\Benedict\Miniconda3\envs\mycda\lib\site-packages\django\views\generic\base.py",line 97,in dispatch                                                               
    return handler(request,**kwargs)                                              
  File "D:\mycda\backend\views.py",line 348,in get                                      
    return render(request,{'email': form.cleaned_data['email']})     
AttributeError: 'AddMemberDuesForm' object has no attribute 'cleaned_data'

解决方法

看看models.py中的代码会有所帮助。你有一个函数在那里获取cleaned_data（）吗？