Question

我想从json预先填充的模型中进行编辑，并尝试使用上一个函数中的用户数据填充表单行，但是当插入时，例如来自model_from_json的last_name我收到错误＆＃34;全局名称＆＃39; last_name＆＃39;未定义＆＃34;。否则，如果我将变量表示为字符串＆＃39; last_name＆＃39;视图呈现可编辑的填充表单行。那么，请问如何使变量可见？

def model_from_json(request):
    path = 'management/test.json'
    with open(path,'r+') as json_file:
        json_data = json_file.read()
        json_dict = json.loads(json_data)

        username = json_dict[0]['fields']['username']
        first_name = json_dict[0]['fields']['first_name']
        last_name = json_dict[0]['fields']['last_name']
        date = json_dict[0]['fields']['last_login']
        email = json_dict[0]['fields']['email']


    form = UserDataForm({
        'username':username ,
        'last_name':last_name,
        'first_name':first_name,
        'date':date,
        'email':email
        })
        form.save()

    template = 'create.html'
    return render_to_response(template, locals(),context_instance=RequestContext(request))

def form_edit(request, id=None, template_name='edit.html'):
    if id:
        username = get_object_or_404(User, pk=id)
        if User.user != request.user:
            return HttpResponseForbidden()
    else:
        username = User(username=request.user)

    if request.POST:
        form = UserDataForm(request.POST, instance=username)
        if form.is_valid():
            form.save()
            message=messages.add_message(request, messages.SUCCESS,(''))
            # If the save was successful, redirect to another page
            redirect_url = reverse('index')
            return HttpResponseRedirect(redirect_url)

    else:
        form = UserDataForm({'last_name':last_name})

    return render_to_response('edit.html', {
        'form': form,
    }, context_instance=RequestContext(request))

Answer 1

将值保留到session

中

request.session["username"] = username

Answer 2

更改您的观点，如：

if request.POST:
    ....
else:
    form = UserDataForm(initial={'last_name':username.last_name})

如何在Django中使其他函数可见变量

2 个答案: