django - 根据用户限制字​​段的选择

Question

我希望表单仅在 ChoiceField 中显示当前用户的帐户。我尝试执行以下操作，但它不起作用。

编辑:抱歉，我忘记提及我添加的“if kwargs”，因为 TransForm() 没有显示任何字段。我想这是错误的，但我不知道其他方法。

views.py:

def in(request, account): 
    if request.method == 'POST':
        form = TransForm(request.user, data=request.POST)
        if form.is_valid():
            ...

    else:
        form = TransForm()

    context = {
          'TranForm': form,
    }
    return render_to_response(
        'cashflow/in.html',
        context,
        context_instance = RequestContext(request),
)

表单.py:

class TransForm(ModelForm):
    class Meta:
        model = Trans

    def __init__(self, *args, **kwargs):
        super(TransForm, self).__init__(*args, **kwargs)
        if kwargs:
            self.fields['account'].queryset = Account.objects.filter(user=args[0])

Answer 1

当请求为NO post请求时，还需要正确初始化表单:

if request.method == 'POST':
    form = TransForm(user=request.user, data=request.POST)
    if form.is_valid():
        ...

else:
    form = TransForm(user=request.user)
 ...

此外，我建议在调用父类(super class)的构造函数时删除新参数:

class TransForm(ModelForm):
    class Meta:
        model = Trans

    def __init__(self, *args, **kwargs):
        user = kwargs.pop('user')
        super(TransForm, self).__init__(*args, **kwargs)
        self.fields['account'].queryset = Account.objects.filter(user=user)