Temporarily disable auto_now / auto_now_add

Question

I have a model like this:

class FooBar(models.Model):
    createtime = models.DateTimeField(auto_now_add=True)
    lastupdatetime = models.DateTimeField(auto         


        

Answer 1

I needed solution that will work with update_or_create, I've came to this solution based on @andreaspelme code.

Only change is that You can set skipping by setting modified field to skip not only by actually passing kwarg skip_modified_update to save() method.

Just yourmodelobject.modified='skip' and update will be skipped!

from django.db import models
from django.utils import timezone


class TimeTrackableAbstractModel(models.Model):
    created = models.DateTimeField(default=timezone.now, db_index=True)
    modified = models.DateTimeField(default=timezone.now, db_index=True)

    class Meta:
        abstract = True

    def save(self, *args, **kwargs):
        skip_modified_update = kwargs.pop('skip_modified_update', False)
        if skip_modified_update or self.modified == 'skip':
            self.modified = models.F('modified')
        else:
            self.modified = timezone.now()
        super(TimeTrackableAbstractModel, self).save(*args, **kwargs)