在单个 Django 表单中使用多个模型

Question

我有一个 django 应用程序，对于一个特定的表单，数据来自不同的模型，在所有模型中都有一个公共字段（id）。我不想使用多个表单和所有表单的相同 id，我想使用一个表单从多个模型中获取数据。如何做到这一点？

Answer 1

1. 指定 django 文档中提供的表单：https://docs.djangoproject.com/en/1.10/topics/forms/#building-a-form-in-django
2. 指定视图，例如

view.py

def get_name(request):
    id = request.kwargs['id']  # Get the id from url or however you want to get the id
    item = Item.objects.get(name_id=id)
    item2 = Item2.objects.get(name_id=id)

    # if this is a POST request we need to process the form data
    if request.method == 'POST':
        # create a form instance and populate it with data from the request:
        form = NameForm(request.POST)

        # check whether it's valid:
        if form.is_valid():
            # process the data in form.cleaned_data as required
             # ... e.g.
            item.name = form.cleaned_data['name']
            item2.name = form.cleaned_data['name2']
            item.save()
            item2.save()
            # redirect to a new URL:
             return HttpResponseRedirect('/thanks/')

        # if a GET (or any other method) we'll create a blank form
    else:
        # This is for updating the "name" objects            
        form = NameForm(initial={'name': item.name, 'name2': item2.name})
        # for creating: (but I guess you don't need creating)
        # form = NameForm()

    return render(request, 'name.html', {'form': form})

1. 照常处理模板中的表单。