why created_at is greater than updated_at while inserting data in table

[Ankit Khandewal]

hello, i am using this code to update created_at and updated_at in models:

        created_at = models.DateTimeField(auto_now_add=True)

updated_at= models.DateTimeField(auto_now=True,null=True)

but however there is created _at is greater than updated_at when data is inserted: 

       created_at  -> 2018-11-26 11:11:30.020989

       updated_at -> 2018-11-26 11:11:30.019762

please help, thank you.

[Nelson Varela]

I think it has to do with django adding timezone.now() on each field with auto_now on it when saving to the databse.. the code for the first field will get timezone.now() slightly earlier then the second one 

[Ankit Khandewal]

is there any fix to this?

[Ankit Khandewal]

and with this method created_at and updated_at both arguments will trigger the field update event with timezon.now(), is there any other method to enter only created_at at time of inserting 

On Wednesday, 28 November 2018 12:43:03 UTC+5:30, Ankit Khandewal wrote:

[Gerson David Vizquel Alemán]

created_at = models.DateTimeField(editable=False)
updated_at = models.DateTimeField()

def save(self, *args, **kwargs):
    ''' On save, update timestamps '''
    if not self.id:
        self.created_at = timezone.now()
        self.updated_at = self.created_at
    self.updated_at = timezone.now()
    return super(User, self).save(*args, **kwargs)