Question

我正在使用一个函数来记录页面加载和用户提交数据之间的时间。以这种形式，我创建了一个隐藏字段，以便管理员可以看到它。但是，我无法实现我的想法，因为我不知道如何从views.py向表单提交时间。如果有人可以提出一种更简便的替代方法来实现我的目标，那对我也将非常有帮助。我的代码如下。

models.py

class Responses(models.Model):
    question1 = models.TextField()
    question2 = models.TextField()
    question3 = models.TextField()
    timespent1 = models.TextField()

forms.py

class Question1Form(forms.ModelForm):
question1 = forms.CharField()
timespent1 = forms.TimeField(widget=forms.HiddenInput())

class Meta:
    model = Responses
    fields = ('question1','timespent1')

views.py

def qone(request):
if request.method =="GET":
    starttime = my_timer()
elif request.method == "POST":
    form = Question1Form(request.POST)
    if form.is_valid():
        endtime = my_timer()
        timespentstr = '{0} seconds'.format(endtime-starttime)
        #Do something to set timespent1 field = timespentstr here
        form = form.save()
else:
    form = Question1Form

return render(request,'question1.html',{'form':form})

Answer 1

您需要将开始时间存储在“其他地方”-也许将其存储在GET中的会话中，然后在POST中从那里拉回它：

def qone(request):
    if request.method == 'GET':
        request.session['start_time'] = mytimer()
        form = Question1Form()
    elif request.method == 'POST':
        form = Question1Form(request.POST, request.FILES)
        if form.is_valid():
            end_time = mytimer()
            start_time = request.session.get('start_time')
            time_spent = end_time - start_time
            ....
            form.save()

return render(request, 'question1.html', {'form': form})

您还可以考虑直接将开始时间传递给表单，然后在其中包含所有逻辑，但这可能会使事情复杂化。也许将“花费的时间”传递给表单构造函数可能是最好的方法。

class Question1Form(forms.Form):
    def __init__(self, *args, **kwargs):
        self.time_taken = self.kwargs.pop('time_taken', None)
        super().__init__(*args, **kwargs)


def qone(request):
    if request.method == 'GET':
        form = Question1Form()
        request.session['start_time'] = my_timer()
    elif request.method == 'POST':
        form = Question1Form(
            request.POST, request.FILES, 
            time_taken=my_timer() - request.session.pop('start_time')
        )
        if form.is_valid():
            form.save()

    # ...

如何在Django中的views.py中填写表单字段？

1 个答案: