I need to make it automatically when it comes leave_date(leaveted date) room_bool == True now it's all done via urls.py /get/by/<int:pk>

views.py

    date = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
    reg = Registration.objects.get(rooms_id=pk)
    room = Rooms.objects.get(pk=pk)
    a = reg.leave_date.replace(tzinfo=None) >= datetime.datetime.strptime(date, '%Y-%m-%d %H:%M:%S').replace(
        tzinfo=None)
    if a != True:
        reg.room_bool = True
        reg.save()
        room.room_bool = True
        room.save()

models.py

    room_num = models.IntegerField()
    room_bool = models.BooleanField(default=True) #if room_bool = True room is open, else closed.
    category = models.CharField(max_length=150)

    def __str__(self):
        return f'{self.room_num}'

    class Meta:
        verbose_name = 'Room'

#This class Registration for visitors, to open room for the them
class Registration(models.Model):
    rooms = models.ForeignKey(Rooms, on_delete=models.CASCADE)
    first_name = models.CharField(max_length=150)
    last_name = models.CharField(max_length=150)
    admin = models.ForeignKey(User, on_delete=models.CASCADE)
    pasport_serial_num = models.CharField(max_length=100)
    birth_date = models.DateField()
    img = models.FileField()
    visit_date = models.DateTimeField()
    leave_date = models.DateTimeField()
    guest_count = models.IntegerField()

    def func(self):
        room = Rooms.objects.filter(room_bool=True)
        for i in room:
            if i.room_num == int(self.rooms):
                i.room_bool = False #this should change when adding new registration
                i.save()

CodePudding user response：

You need something to control timing, it's not easy achieved.

Easier way is to create model called Reservation or something u prefer. Then if someone reserved - create that object. Room can check reservations with methods.

class Reservation(...):
    room = models.ForeignKey(...)
    start_date = models.DateTimeField(...)
    end_date = models.DateTimeField(...)
    ...

class Room(...):
    ...

    def is_avaiable(self, date):
        return not self.reservation_set.filter(start_date__gte=date, end_date__lte=date)

Alternatively use something like apscheduler. Longer way is to use Celery, but use it only if you plan to have a lot of actions like this in many apps.