如何在Django中运行时处理动态字段

时间:2012-03-06 08:48:41

标签: python django types

我正在根据用户选择开发动态表单。这是一个两阶段的过程:首先,用户从单选按钮列表中进行选择,并根据该选择,向用户显示相应的表单字段。我知道如何使用类型,但我使用2种不同的形式(1个用于初始选择,1个用于自定义表单字段),以及2个不同的视图。 我有两个问题: 1)将这两种形式分开并有意见是否正确? 2)一旦用户填写了第二个(自定义)表单,我怎么能在运行时知道哪些字段    为了创建对象并将其保存到DB中,她被呈现给她?

class SelectionForm(forms.Form):
    choice = forms.ModelChoiceField(queryset=Fruit.objects.filter(...)
                                     widget=forms.RadioSelect,
                                     initial='')

# views.py
def review(request):
    if request.method == 'POST':
        form = SelectionForm(request.POST)

        if form.is_valid():
            user_choice = form.cleaned_data['choice']

            return HttpResponseRedirect('/new_order/%s' % (user_choice))
    else:
        form = SelectionForm()

    return render_to_response( '/new_order.html', {'form': form} )

def order_fruit(request, user_choice):
    if request.method == 'POST':
        """
        make_order_form uses Python type to create a form
        depending on user_choice
        """
        form = make_order_form(request.POST, user_choice)

        if form.is_valid():
            # How to know which fields were presented to the user -
            # in order to create the Order object with the right -
            # arguments ????????????????????

            return HttpResponseRedirect('/thanks/')

    else:
        form = make_order_form(request, user_choice)

    return render_to_response('/second_step_order.html', { 'form':form })

1 个答案:

答案 0 :(得分:0)

反思您的表格。看看'form.fields'或'form.cleaned_data'。