CODEWITHSUNDEEP
pythondjangodjango-modelsdjango-admin
Qback
Qback

Reputation: 4908

Django - Can't set default DateTimeField value

When I save form with empty date and date_added fields in django-admin site then it saves empty values there. I want to save current time instead. Here's code:

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

# Create your models here.

class Event(models.Model):
    def __str__(self):
        return self.title

    title = models.CharField(max_length=300)
    date = models.DateField(default=datetime.date.today, blank=True, null=True)
    date_added = models.DateTimeField(default=timezone.localtime, blank=True, null=True)
    text = models.TextField()

class EventPhoto(models.Model):
    event_id = models.ForeignKey(Event, on_delete=models.CASCADE)
    photo = models.ImageField(upload_to='news/')

Why default=timezone.localtime doesn't work?

Upvotes: 0

Views: 5454

Answers (3)

Qback
Qback

Reputation: 4908

I've figured out, that the problem is with django-admin. If I'll use code like this: 

new_event = Event(title="blablah", text="some_text")
new_event.save()

then it saves DateField properly using default=timezone.localtime. Probably django-admin tried to pass empty string to DateField instead of not touching it and letting it take default action.

Upvotes: 0

neverwalkaloner
neverwalkaloner

Reputation: 47354

Django DateField provides auto_now_add and auto_now arguments for this:

date = models.DateField(auto_now=True, blank=True, null=True)
date_added = models.DateTimeField(auto_now_add=True, blank=True, null=True)

Upvotes: 1

Arusekk
Arusekk

Reputation: 881

timezone.localtime is a conversion function, not a value, and that's why it cannot be used.

Help on function localtime in module django.utils.timezone:

localtime(value, timezone=None)
    Converts an aware datetime.datetime to local time.

    Local time is defined by the current time zone, unless another time zone
    is specified.

Upvotes: 0

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