Python 如何更改列表项的视图

我正在使用Django，在我的models.py中，我创建了一些列表。我的项目是关于汽车进出控制。因此，我创建了一个特定的列表，当用户请求一辆车时，它有以下状态：“等待、确认或拒绝”。我需要知道在某些事件发生时如何更改这些状态，例如请求被拒绝或批准

这是my models.py代码的一部分：

SITUATION = [
("WAITING", "WAITING"), ("DENIED", "DENIED"), ("CONFIRMED", "CONFIRMED")
]

class RequestCar (models.Model):

    id = models.AutoField (primary_key = True)
    secretary = models.CharField (max_length = 15, choices = SECRETARIES)
    dateTimeReserve = models.DateTimeField (auto_now_add = True, db_column = 'date_time_reserve')
    dateExit = models.DateTimeField (verbose_name = 'Expected Exit Date', db_column = 'exit_date')
    exitTime = models.CharField (max_length = 3, verbose_name = 'Expected Exit Time', choices = TIME)
    requester = models.CharField (max_length = 50)
    email = models.EmailField ()
    numPassengers = models.IntegerField (verbose_name = 'Number of Passengers', db_column = 'num_pasage')
    reason = models.CharField (max_length = 150)
    itinerary = models.CharField (max_length = 50)
    expectationTime = models.CharField (max_length = 7, verbose_name = 'What is the expected time of absence?',choices = TIME)
    driverAwait = models.CharField (max_length = 3, verbose_name = 'Does the driver wait in place?',choices = DRIVER_AGUARD, db_column = 'driver_guard')
    office = models.FileField (verbose_name = 'office', upload_to = 'media /', blank = True)
    situation = models.CharField (max_length = 10, choices = SITUATION, default = "WAITING")


class ResponseRequest (models.Model):
    id = models.AutoField (primary_key = True)
    accepted = models.NullBooleanField ()
    car = models.ForeignKey (Car, on_delete = models.CASCADE, db_column = 'car')
    driver = models.ForeignKey (Driver, on_delete = models.CASCADE, db_column = 'driver')
    request = models.ForeignKey (RequestCar, on_delete = models.CASCADE, db_column = 'request')

My views.py：

def replyGeneral Request (request, template_name = "answer / reply_request.html"):
    form = AnswerRequestForms (request.POST or None, request.FILES or None)
    if form.is_valid ():
        form.save ()
        return redirect ('listGeneral Request')
    else:
        form = AnswerRequestForms ()
    return render (request, template_name, {'form': form})

---

基本上，我希望当请求被接受时，情况从“等待”变为“确认”。

---

OBS：模型和视图中都有其他类，但我认为这个问题不需要它。

您的

AnswerRequestForms

用于

ResponseRequest

，因此当您保存它时，它会返回您刚刚创建的

ResponseRequest

实例：

if form.is_valid():
    response_request = form.save()
    car_request = response_request.request
    car_request.situation = "CONFIRMED"
    car_request.save()
    return redirect(...)

---

RequestCar

模型的

AnswerRequestForms

a

ModelForm

是吗？不是，它来自ResponseRequest