[英]When returning a value from a function in python, it comes back empty
[英]when a certain time value comes from false back to true
我需要在它出现leave_date
room_bool == True
/get/by/<int:pk>
它
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()
你需要一些东西来控制时间,这并不容易实现。
更简单的方法是创建名为Reservation
的 model 或您喜欢的名称。 然后,如果有人预订 - 创建 object。房间可以使用方法检查预订。
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)
或者使用类似apscheduler的东西。 更长的方法是使用Celery ,但仅当您计划在许多应用程序中执行大量此类操作时才使用它。
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