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在我的 Django 应用程序中，我有一个ModelChoiceField用于选择对象的索引视图。当我单击提交按钮时，我想将该对象传递给下一个视图，但它不起作用。

这是我的代码： 意见：

def index(request):
    args = {}
    args.update(csrf(request))
    if request.user.is_authenticated():
        if request.POST:
            form = EquipmentForm(request.POST)
            if form.is_valid():
                form.save()
                request.session['chosen_equipment'] = form.cleaner(self)
                return HttpResponseRedirect('/lru/reservation/')            
        else:
            form = EquipmentForm()
        args['form'] = form
        args['user'] = request.user
        args['reservation_list'] = Reservation.objects.all()
        return render_to_response('lru/index.html', args)
    else:
        return HttpResponseRedirect('/lru/login/')

def reservation(request):
    if request.POST:
        form = ReservationForm(request.POST)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/lru/')
    else:
        form = ReservationForm()

    form = ReservationForm(initial={'reserved_by': request.user})
    args = {}
    args.update(csrf(request))
    args['form'] = form
    args['chosen_equipment'] = request.session.get('chosen_equipment', ' Not found')

    return render_to_response('lru/reservation.html', args)

形式：

class EquipmentForm(forms.Form):

    class Meta:
        model = Equipment

    equipment = forms.ModelChoiceField(queryset=Equipment.objects.all())

    def cleaner(self):
        data = self.cleaned_data[equipment]
            return data

我在这里做错了什么？

4

1 回答 1

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试试这个版本，它应该能满足你的期望：

您不需要单独的方法forms.py：

class EquipmentForm(forms.Form):

    class Meta:
        model = Equipment

    equipment = forms.ModelChoiceField(queryset=Equipment.objects.all())

在您的views.py中，这应该有效：

from django.shortcuts import redirect
from django.shortcuts import render
from django.contrib.auth.decorators import login_required

@login_required
def index(request):
    args = {}
    args['user'] = request.user
    args['reservation_list'] = Reservation.objects.all()
    if request.user.is_authenticated():
        if request.POST:
            form = EquipmentForm(request.POST)
            if form.is_valid():
                form.save()
                request.session['chosen_equipment'] = form.cleaned_data['equipment']
                return redirect('/lru/reservation/')
            else:
                # Form invalid, so render the same view again
                args['form'] = form
                return render(request, 'lru/index.html', args)            
        else:
            form = EquipmentForm()
        args['form'] = form
        return render(request, 'lru/index.html', args)
    else:
        return redirect('/lru/login/')

@login_required
def reservation(request):
    args = {}
    args['chosen_equipment'] = request.session.get('chosen_equipment', ' Not found')
    if request.POST:
        form = ReservationForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('/lru/')
        else:
            # Always have an else condition if the form doesn't validate
            args['form'] = form
            return render(request, 'lru/reservation.html', args)
    else:

        form = ReservationForm(initial={'reserved_by': request.user})
        args['form'] = form
        return render(request, 'lru/reservation.html', args)

变化：

  1. 不需要自定义方法，因为您可以cleaned_data在视图中访问。
  2. 使用了redirect更灵活的快捷方式。
  3. 使用render快捷方式，以便RequestContext正确传递。
  4. 为未验证表单的情况添加了代码。
  5. 添加了login_required装饰器以确保仅通过登录用户调用视图。
于 2013-08-02T12:32:04.643 回答