unique_for_* errors out when date field is left empty
|Reported by:||Silvio J. Gutierrez||Owned by:||Satoru Logic|
|Has patch:||no||Needs documentation:||no|
|Needs tests:||yes||Patch needs improvement:||no|
Using Django 1.2.1, create a simple model, like so:
from django.db import models class Article(models.Model): title = models.CharField(max_length=200) pub_date = models.DateField() slug = models.SlugField(max_length=150, unique_for_year='pub_date')
and register it with the admin site in admin.py; the standard registration is fine:
from django.contrib import admin from models import Article admin.site.register(Article)
Go to create an article, and enter "abc" as the tile and the slug, but leave the date empty. On submission, you'll get
'NoneType' object has no attribute 'day' .
The error seems to apply to unique_for_year and unique_for_month as well, though the error displays "no attribute 'year'" and "no attribute 'month'" respectively, naturally. No error occurs if the field marked as unique_for_* is left empty, in this case the slug. Rather the actual validation message comes up. My guess is that the date field needs to be checked to see if it's empty first, and then check for uniqueness.
In short, rather than displaying the validation for "this field is required" which is user friendly, the submission errors out. The same setup does not error out on Django 1.1.2.
Let me know if you need any more details,