有没有办法让updateview中的时间与django中createview中的时间保持一致

Question

i have realised that when i run the updateview the listdate changes to the time I updated the listing.Here is my models.py

class Listing(models.Model):

list_date = models.DateTimeField('date created', blank=True, auto_now=True)
favourite = models.ManyToManyField(User, related_name="favourite", blank=True)

def __str__(self):
    return self.title

def get_absolute_url(self): 
   return reverse("user-dashboard") 


def save(self, *args, **kwargs): 
    if self.is_published and self.list_date is None:
        self.list_date = datetime.datetime.now()
    elif not self.is_published and self.list_date is not None:
        self.list_date = None
    super(Listing, self).save(*args, **kwargs)

Answer 1

您需要将auto_now更改为auto_now_add 。

list_date = models.DateTimeField('date created', blank=True, auto_now_add=True)